stripe cleanup

stripe.c:
 indentation cleanup
 log messages cleanup
 coding standard guidelines
 removed ERR_ABORTs

stripe.h
 moved the structure definitions here

Signed-off-by: Anand V. Avati <avati@dev.gluster.com>

3 files changed, 2759 insertions, 2621 deletions

diff --git a/xlators/cluster/stripe/src/Makefile.am b/xlators/cluster/stripe/src/Makefile.am
index 60e0a1568..180d0da1f 100644
--- a/xlators/cluster/stripe/src/Makefile.am
+++ b/xlators/cluster/stripe/src/Makefile.am
@@ -7,6 +7,8 @@ stripe_la_LDFLAGS = -module -avoidversion
 stripe_la_SOURCES = stripe.c
 stripe_la_LIBADD = $(top_builddir)/libglusterfs/src/libglusterfs.la
 
+noinst_HEADERS = stripe.h
+
 AM_CFLAGS = -fPIC -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -Wall -D$(GF_HOST_OS)\
 	-I$(top_srcdir)/libglusterfs/src -shared -nostartfiles $(GF_CFLAGS)
 
diff --git a/xlators/cluster/stripe/src/stripe.c b/xlators/cluster/stripe/src/stripe.c
index b9df7a80e..11d6172f9 100644
--- a/xlators/cluster/stripe/src/stripe.c
+++ b/xlators/cluster/stripe/src/stripe.c
@@ -33,141 +33,39 @@
  *  backup copy. 
  */
 
-#ifndef _CONFIG_H
-#define _CONFIG_H
-#include "config.h"
-#endif
-
-#include "xlator.h"
-#include "logging.h"
-#include "defaults.h"
-#include "compat.h"
-#include "compat-errno.h"
-#include <fnmatch.h>
-#include <signal.h>
-
-#define STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR(_loc) do {        \
-        if (!(_loc && _loc->inode)) {                              \
-               STACK_UNWIND (frame, -1, EINVAL, NULL, NULL, NULL); \
-               return 0;                                           \
-        }                                                          \
-} while(0)
-
-/**
- * struct stripe_options : This keeps the pattern and the block-size 
- *     information, which is used for striping on a file.
- */
-struct stripe_options {
-	struct stripe_options *next;
-	char path_pattern[256];
-	uint64_t block_size;
-};
-
-/**
- * Private structure for stripe translator 
- */
-struct stripe_private {
-	struct stripe_options *pattern;
-	xlator_t **xl_array;
-	uint64_t   block_size;
-	gf_lock_t  lock;
-	uint8_t    nodes_down;
-	int8_t     first_child_down;
-	int8_t     child_count;
-	int8_t     state[256];       /* Current state of the child node, 
-					0 for down, 1 for up */
-	gf_boolean_t  xattr_supported;  /* 0 for no, 1 for yes, default yes */
-};
-
-/**
- * Used to keep info about the replies received from fops->readv calls 
- */
-struct readv_replies {
-	struct iovec *vector;
-	int32_t       count;    //count of vector
-	int32_t       op_ret;   //op_ret of readv
-	int32_t       op_errno;
-	struct stat   stbuf;    /* 'stbuf' is also a part of reply */
-};
-
-/**
- * Local structure to be passed with all the frames in case of STACK_WIND
+/* TODO:
+ * 1. Implement basic self-heal ability to manage the basic backend 
+ *    layout missmatch.
+ * 
  */
-struct stripe_local; /* this itself is used inside the structure; */
-
-struct stripe_local {
-	struct stripe_local *next;
-	call_frame_t        *orig_frame; 
-
-	/* Used by _cbk functions */
- 	struct stat          stbuf;
-	struct readv_replies *replies;
-	struct statvfs       statvfs_buf;
-	dir_entry_t         *entry;
-	struct xlator_stats  stats;
-
-	int8_t               revalidate;
-	int8_t               failed;
-	int8_t               unwind;
-
-	int32_t              node_index;
-	int32_t              call_count;
-	int32_t              wind_count; /* used instead of child_cound 
-					    in case of read and write */
-	int32_t              op_ret;
-	int32_t              op_errno; 
-	int32_t              count;
-	int32_t              flags;
-	char                *name;
-	inode_t             *inode;
-
-	loc_t                loc;
-	loc_t                loc2;
-
-	/* For File I/O fops */
-	dict_t              *dict;
-
-	/* General usage */
-	off_t                offset;
-	off_t                stripe_size;
-
-	int8_t              *list;
-	struct flock         lock;
-	fd_t                *fd;
-	void                *value;
-        struct iobref       *iobref;
-};
 
-typedef struct stripe_local   stripe_local_t;
-typedef struct stripe_private stripe_private_t;
+#include "stripe.h"
 
 /**
  * stripe_get_matching_bs - Get the matching block size for the given path.
  */
 int32_t 
-stripe_get_matching_bs (const char *path, 
-			struct stripe_options *opts,
-			uint64_t default_bs) 
+stripe_get_matching_bs (const char *path, struct stripe_options *opts,
+                        uint64_t default_bs) 
 {
-	struct stripe_options *trav       = NULL;
-	char                  *pathname   = NULL;
-	uint64_t               block_size = 0;
+        struct stripe_options *trav       = NULL;
+        char                  *pathname   = NULL;
+        uint64_t               block_size = 0;
 
-	block_size = default_bs;
-	pathname   = strdup (path);
-	trav       = opts;
+        block_size = default_bs;
+        pathname   = strdup (path);
+        trav       = opts;
 
-	while (trav) {
-		if (fnmatch (trav->path_pattern, 
-			     pathname, FNM_NOESCAPE) == 0) {
-			block_size = trav->block_size;
-			break;
-		}
-		trav = trav->next;
-	}
-	free (pathname);
-	
-	return block_size;
+        while (trav) {
+                if (!fnmatch (trav->path_pattern, pathname, FNM_NOESCAPE)) {
+                        block_size = trav->block_size;
+                        break;
+                }
+                trav = trav->next;
+        }
+        free (pathname);
+        
+        return block_size;
 }
 
 
@@ -175,14 +73,11 @@ stripe_get_matching_bs (const char *path,
  * stripe_common_cbk -
  */
 int32_t
-stripe_common_cbk (call_frame_t *frame,
-		   void *cookie,
-		   xlator_t *this,
-		   int32_t op_ret,
-		   int32_t op_errno)
+stripe_common_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                   int32_t op_ret, int32_t op_errno)
 {
-	STACK_UNWIND (frame, op_ret, op_errno);
-	return 0;
+        STACK_UNWIND (frame, op_ret, op_errno);
+        return 0;
 }
 
 /**
@@ -192,57 +87,52 @@ stripe_common_cbk (call_frame_t *frame,
  *
  */
 int32_t 
-stripe_stack_unwind_cbk (call_frame_t *frame,
-			 void *cookie,
-			 xlator_t *this,
-			 int32_t op_ret,
-			 int32_t op_errno)
-{
-	int32_t         callcnt = 0;
-	stripe_local_t *local   = frame->local;
-
-	LOCK (&frame->lock);
-	{
-		callcnt = --local->call_count;
-
-		if (op_ret == -1) {
-			gf_log (this->name, GF_LOG_WARNING, 
-				"%s returned %s",
-				((call_frame_t *)cookie)->this->name, 
-				strerror (op_errno));			
-			local->op_errno = op_errno;
-			if (op_errno == ENOTCONN) 
-				local->failed = 1;
-		}
-		if (op_ret >= 0) 
-			local->op_ret = op_ret;
-	}
-	UNLOCK (&frame->lock);
-
-	if (!callcnt) {
-		if (local->failed)
-			local->op_ret = -1;
-
-		if (local->loc.path)
-			loc_wipe (&local->loc);
-		if (local->loc2.path)
-			loc_wipe (&local->loc2);
-
-		STACK_UNWIND (frame, local->op_ret, local->op_errno);
-	}
-	return 0;
+stripe_stack_unwind_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                         int32_t op_ret, int32_t op_errno)
+{
+        int32_t         callcnt = 0;
+        stripe_local_t *local   = NULL;
+
+        local = frame->local;
+
+        LOCK (&frame->lock);
+        {
+                callcnt = --local->call_count;
+
+                if (op_ret == -1) {
+                        gf_log (this->name, GF_LOG_DEBUG, 
+                                "%s returned %s",
+                                ((call_frame_t *)cookie)->this->name, 
+                                strerror (op_errno));                   
+                        local->op_errno = op_errno;
+                        if (op_errno == ENOTCONN) 
+                                local->failed = 1;
+                }
+                if (op_ret >= 0) 
+                        local->op_ret = op_ret;
+        }
+        UNLOCK (&frame->lock);
+
+        if (!callcnt) {
+                if (local->failed)
+                        local->op_ret = -1;
+
+                if (local->loc.path)
+                        loc_wipe (&local->loc);
+                if (local->loc2.path)
+                        loc_wipe (&local->loc2);
+
+                STACK_UNWIND (frame, local->op_ret, local->op_errno);
+        }
+        return 0;
 }
 
 int32_t 
-stripe_common_buf_cbk (call_frame_t *frame,
-		       void *cookie,
-		       xlator_t *this,
-		       int32_t op_ret,
-		       int32_t op_errno,
-		       struct stat *buf)
+stripe_common_buf_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                       int32_t op_ret, int32_t op_errno, struct stat *buf)
 {
-	STACK_UNWIND (frame, op_ret, op_errno, buf);
-	return 0;
+        STACK_UNWIND (frame, op_ret, op_errno, buf);
+        return 0;
 }
 
 /**
@@ -254,85 +144,80 @@ stripe_common_buf_cbk (call_frame_t *frame,
  * @cookie - this argument should be always 'xlator_t *' of child node 
  */
 int32_t 
-stripe_stack_unwind_buf_cbk (call_frame_t *frame,
-			     void *cookie,
-			     xlator_t *this,
-			     int32_t op_ret,
-			     int32_t op_errno,
-			     struct stat *buf)
-{
-	int32_t callcnt = 0;
-	stripe_local_t *local = frame->local;
-
-	LOCK (&frame->lock);
-	{
-		callcnt = --local->call_count;
-
-		if (op_ret == -1) {
-			gf_log (this->name, GF_LOG_WARNING, 
-				"%s returned error %s",
-				((call_frame_t *)cookie)->this->name, 
-				strerror (op_errno));
-			local->op_errno = op_errno;
-			if (op_errno == ENOTCONN)
-				local->failed = 1;
-		}
+stripe_stack_unwind_buf_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                             int32_t op_ret, int32_t op_errno,
+                             struct stat *buf)
+{
+        int32_t         callcnt = 0;
+        stripe_local_t *local = NULL;
+
+        local = frame->local;
+
+        LOCK (&frame->lock);
+        {
+                callcnt = --local->call_count;
+
+                if (op_ret == -1) {
+                        gf_log (this->name, GF_LOG_DEBUG, 
+                                "%s returned error %s",
+                                ((call_frame_t *)cookie)->this->name, 
+                                strerror (op_errno));
+                        local->op_errno = op_errno;
+                        if (op_errno == ENOTCONN)
+                                local->failed = 1;
+                }
     
-		if (op_ret == 0) {
-			local->op_ret = 0;
-			if (local->stbuf.st_blksize == 0) {
-				local->stbuf = *buf;
-				/* Because st_blocks gets added again */
-				local->stbuf.st_blocks = 0;
-			}
-
-			if (FIRST_CHILD(this) == 
-			    ((call_frame_t *)cookie)->this) {
-				/* Always, pass the inode number of 
-				   first child to the above layer */
-				local->stbuf.st_ino = buf->st_ino;
-				local->stbuf.st_mtime = buf->st_mtime;
-			}
-
-			local->stbuf.st_blocks += buf->st_blocks;
-			if (local->stbuf.st_size < buf->st_size)
-				local->stbuf.st_size = buf->st_size;
-			if (local->stbuf.st_blksize != buf->st_blksize) {
-				/* TODO: add to blocks in terms of 
-				   original block size */
-			}
-		}
-	}
-	UNLOCK (&frame->lock);
-
-	if (!callcnt) {
-		if (local->failed)
-			local->op_ret = -1;
-
-		if (local->loc.path)
-			loc_wipe (&local->loc);
-		if (local->loc2.path)
-			loc_wipe (&local->loc2);
-
-		STACK_UNWIND (frame, local->op_ret, local->op_errno, 
-			      &local->stbuf);
-	}
-
-	return 0;
+                if (op_ret == 0) {
+                        local->op_ret = 0;
+                        if (local->stbuf.st_blksize == 0) {
+                                local->stbuf = *buf;
+                                /* Because st_blocks gets added again */
+                                local->stbuf.st_blocks = 0;
+                        }
+
+                        if (FIRST_CHILD(this) == 
+                            ((call_frame_t *)cookie)->this) {
+                                /* Always, pass the inode number of 
+                                   first child to the above layer */
+                                local->stbuf.st_ino = buf->st_ino;
+                                local->stbuf.st_mtime = buf->st_mtime;
+                        }
+
+                        local->stbuf.st_blocks += buf->st_blocks;
+                        if (local->stbuf.st_size < buf->st_size)
+                                local->stbuf.st_size = buf->st_size;
+                        if (local->stbuf.st_blksize != buf->st_blksize) {
+                                /* TODO: add to blocks in terms of 
+                                   original block size */
+                        }
+                }
+        }
+        UNLOCK (&frame->lock);
+
+        if (!callcnt) {
+                if (local->failed)
+                        local->op_ret = -1;
+
+                if (local->loc.path)
+                        loc_wipe (&local->loc);
+                if (local->loc2.path)
+                        loc_wipe (&local->loc2);
+
+                STACK_UNWIND (frame, local->op_ret, local->op_errno, 
+                              &local->stbuf);
+        }
+
+        return 0;
 }
 
 /* In case of symlink, mknod, the file is created on just first node */
 int32_t 
-stripe_common_inode_cbk (call_frame_t *frame,
-			 void *cookie,
-			 xlator_t *this,
-			 int32_t op_ret,
-			 int32_t op_errno,
-			 inode_t *inode,
-			 struct stat *buf)
+stripe_common_inode_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                         int32_t op_ret, int32_t op_errno, inode_t *inode,
+                         struct stat *buf)
 {
-	STACK_UNWIND (frame, op_ret, op_errno, inode, buf);
-	return 0;
+        STACK_UNWIND (frame, op_ret, op_errno, inode, buf);
+        return 0;
 }
 
 /**
@@ -344,142 +229,152 @@ stripe_common_inode_cbk (call_frame_t *frame,
  *
  */
 int32_t 
-stripe_stack_unwind_inode_cbk (call_frame_t *frame,
-			       void *cookie,
-			       xlator_t *this,
-			       int32_t op_ret,
-			       int32_t op_errno,
-			       inode_t *inode,
-			       struct stat *buf)
-{
-	int32_t callcnt = 0;
-	stripe_local_t *local = frame->local;
-
-	LOCK (&frame->lock);
-	{
-		callcnt = --local->call_count;
+stripe_stack_unwind_inode_cbk (call_frame_t *frame, void *cookie,
+                               xlator_t *this, int32_t op_ret, 
+                               int32_t op_errno, inode_t *inode,
+                               struct stat *buf)
+{
+        int32_t         callcnt = 0;
+        stripe_local_t *local   = NULL;
+
+        local = frame->local;
+
+        LOCK (&frame->lock);
+        {
+                callcnt = --local->call_count;
     
-		if (op_ret == -1) {
-			gf_log (this->name, GF_LOG_WARNING, 
-				"%s returned error %s",
-				((call_frame_t *)cookie)->this->name, 
-				strerror (op_errno));
-			local->op_errno = op_errno;
-			if (op_errno == ENOTCONN)
-				local->failed = 1;
-		}
+                if (op_ret == -1) {
+                        gf_log (this->name, GF_LOG_DEBUG, 
+                                "%s returned error %s",
+                                ((call_frame_t *)cookie)->this->name, 
+                                strerror (op_errno));
+                        local->op_errno = op_errno;
+                        if (op_errno == ENOTCONN)
+                                local->failed = 1;
+                }
  
-		if (op_ret >= 0) {
-			local->op_ret = 0;
-
-			if (local->stbuf.st_blksize == 0) {
-				local->inode = inode;
-				local->stbuf = *buf;
-				/* Because st_blocks gets added again */
-				local->stbuf.st_blocks = 0;
-			}
-			if (FIRST_CHILD(this) == 
-			    ((call_frame_t *)cookie)->this) {
-				local->stbuf.st_ino = buf->st_ino;
-				local->stbuf.st_mtime = buf->st_mtime;
-			}
-
-			local->stbuf.st_blocks += buf->st_blocks;
-			if (local->stbuf.st_size < buf->st_size)
-				local->stbuf.st_size = buf->st_size;
-			if (local->stbuf.st_blksize != buf->st_blksize) {
-				/* TODO: add to blocks in terms of 
-				   original block size */
-			}
-		}
-	}
-	UNLOCK (&frame->lock);
-
-	if (!callcnt) {
-		if (local->failed)
-			local->op_ret = -1;
-
-		STACK_UNWIND (frame, local->op_ret, local->op_errno, 
-			      local->inode, &local->stbuf);
-	}
-
-	return 0;
+                if (op_ret >= 0) {
+                        local->op_ret = 0;
+
+                        if (local->stbuf.st_blksize == 0) {
+                                local->inode = inode;
+                                local->stbuf = *buf;
+                                /* Because st_blocks gets added again */
+                                local->stbuf.st_blocks = 0;
+                        }
+                        if (FIRST_CHILD(this) == 
+                            ((call_frame_t *)cookie)->this) {
+                                local->stbuf.st_ino = buf->st_ino;
+                                local->stbuf.st_mtime = buf->st_mtime;
+                        }
+
+                        local->stbuf.st_blocks += buf->st_blocks;
+                        if (local->stbuf.st_size < buf->st_size)
+                                local->stbuf.st_size = buf->st_size;
+                        if (local->stbuf.st_blksize != buf->st_blksize) {
+                                /* TODO: add to blocks in terms of 
+                                   original block size */
+                        }
+                }
+        }
+        UNLOCK (&frame->lock);
+
+        if (!callcnt) {
+                if (local->failed)
+                        local->op_ret = -1;
+
+                STACK_UNWIND (frame, local->op_ret, local->op_errno, 
+                              local->inode, &local->stbuf);
+        }
+
+        return 0;
 }
 
 int32_t 
-stripe_stack_unwind_inode_lookup_cbk (call_frame_t *frame,
-				      void *cookie,
-				      xlator_t *this,
-				      int32_t op_ret,
-				      int32_t op_errno,
-				      inode_t *inode,
-				      struct stat *buf,
-				      dict_t *dict)
-{
-	int32_t callcnt = 0;
-	dict_t *tmp_dict = NULL;
-	stripe_local_t *local = frame->local;
-
-	LOCK (&frame->lock);
-	{
-		callcnt = --local->call_count;
+stripe_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this, 
+                   int32_t op_ret, int32_t op_errno, inode_t *inode,
+                   struct stat *buf, dict_t *dict)
+{
+        int32_t         callcnt = 0;
+        dict_t         *tmp_dict = NULL;
+        inode_t        *tmp_inode = NULL;
+        stripe_local_t *local = NULL;
+        call_frame_t   *prev = NULL;
+
+        prev = cookie;
+        local = frame->local;
+
+        LOCK (&frame->lock);
+        {
+                callcnt = --local->call_count;
     
-		if (op_ret == -1) {
-			if (op_errno != ENOENT)
-				gf_log (this->name, GF_LOG_WARNING, 
-					"%s returned error %s",
-					((call_frame_t *)cookie)->this->name,
-					strerror (op_errno));
+                if (op_ret == -1) {
+                        if (op_errno != ENOENT)
+                                gf_log (this->name, GF_LOG_DEBUG, 
+                                        "%s returned error %s",
+                                        prev->this->name,
+                                        strerror (op_errno));
                         if (local->op_errno != ESTALE)
                                 local->op_errno = op_errno;
-			if ((op_errno == ENOTCONN) 
-                            || (op_errno == ESTALE))
-				local->failed = 1;
-		}
+                        if ((op_errno == ENOTCONN) || (op_errno == ESTALE))
+                                local->failed = 1;
+                        /* TODO: bring in self-heal ability */
+                        /* 
+                         * if (local->op_ret == 0) {
+                         *       if (S_ISREG (local->stbuf.st_mode) || 
+                         *           S_ISDIR (local->stbuf.st_mode))
+                         *               local->entry_self_heal_needed = 1;
+                         * }
+                         */
+                }
  
-		if (op_ret >= 0) {
-			local->op_ret = 0;
-
-			if (local->stbuf.st_blksize == 0) {
-				local->inode = inode;
-				local->stbuf = *buf;
-				/* Because st_blocks gets added again */
-				local->stbuf.st_blocks = 0;
-			}
-			if (FIRST_CHILD(this) == 
-			    ((call_frame_t *)cookie)->this) {
-				local->stbuf.st_ino = buf->st_ino;
-				local->stbuf.st_mtime = buf->st_mtime;
-				if (local->dict)
-					dict_unref (local->dict);
-				local->dict = dict_ref (dict);
-			} else {
-				if (!local->dict)
-					local->dict = dict_ref (dict);
-			}
-			local->stbuf.st_blocks += buf->st_blocks;
-			if (local->stbuf.st_size < buf->st_size)
-				local->stbuf.st_size = buf->st_size;
-			if (local->stbuf.st_blksize != buf->st_blksize) {
-				/* TODO: add to blocks in terms of 
-				   original block size */
-			}
-		}
-	}
-	UNLOCK (&frame->lock);
-
-	if (!callcnt) {
-		if (local->failed)
-			local->op_ret = -1;
-
-		tmp_dict = local->dict;
-		STACK_UNWIND (frame, local->op_ret, local->op_errno, 
-			      local->inode, &local->stbuf, local->dict);
-		if (tmp_dict)
-			dict_unref (tmp_dict);
-	}
-
-	return 0;
+                if (op_ret >= 0) {
+                        local->op_ret = 0;
+
+                        if (local->stbuf.st_blksize == 0) {
+                                local->inode = inode_ref (inode);
+                                local->stbuf = *buf;
+                                /* Because st_blocks gets added again */
+                                local->stbuf.st_blocks = 0;
+                        }
+                        if (FIRST_CHILD(this) == prev->this) {
+                                local->stbuf.st_ino = buf->st_ino;
+                                local->stbuf.st_mtime = buf->st_mtime;
+                                if (local->dict)
+                                        dict_unref (local->dict);
+                                local->dict = dict_ref (dict);
+                        } else {
+                                if (!local->dict)
+                                        local->dict = dict_ref (dict);
+                        }
+                        local->stbuf.st_blocks += buf->st_blocks;
+                        if (local->stbuf.st_size < buf->st_size)
+                                local->stbuf.st_size = buf->st_size;
+                        if (local->stbuf.st_blksize != buf->st_blksize) {
+                                /* TODO: add to blocks in terms of 
+                                   original block size */
+                        }
+                }
+        }
+        UNLOCK (&frame->lock);
+
+        if (!callcnt) {
+                if (local->failed)
+                        local->op_ret = -1;
+
+                tmp_dict = local->dict;
+                tmp_inode = local->inode;
+
+                STACK_UNWIND (frame, local->op_ret, local->op_errno, 
+                              local->inode, &local->stbuf, local->dict);
+
+                if (tmp_inode)
+                        inode_unref (tmp_inode);
+                if (tmp_dict)
+                        dict_unref (tmp_dict);
+        }
+
+        return 0;
 }
 
 
@@ -487,104 +382,118 @@ stripe_stack_unwind_inode_lookup_cbk (call_frame_t *frame,
  * stripe_lookup -
  */
 int32_t 
-stripe_lookup (call_frame_t *frame,
-	       xlator_t *this,
-	       loc_t *loc,
-	       dict_t *xattr_req)
-{
-	stripe_local_t *local = NULL;
-	xlator_list_t *trav = NULL;
-	stripe_private_t *priv = this->private;
-	char send_lookup_to_all = 0;
-
-	if (!(loc && loc->inode)) {
-		gf_log (this->name, GF_LOG_ERROR, 
-			"wrong argument, returning EINVAL");
-		STACK_UNWIND (frame, -1, EINVAL, NULL, NULL, NULL);
-		return 0;
-	}
-
-	/* Initialization */
-	local = CALLOC (1, sizeof (stripe_local_t));
-	ERR_ABORT (local);
-	local->op_ret = -1;
-	frame->local = local;
-
-	if ((!loc->inode->st_mode) || 
-	    S_ISDIR (loc->inode->st_mode) || 
-	    S_ISREG (loc->inode->st_mode))
-		send_lookup_to_all = 1;
-
-	if (send_lookup_to_all) {
-		/* Everytime in stripe lookup, all child nodes 
-		   should be looked up */
-		local->call_count = priv->child_count;
-		trav = this->children;
-		while (trav) {
-			STACK_WIND (frame,
-				    stripe_stack_unwind_inode_lookup_cbk,
-				    trav->xlator,
-				    trav->xlator->fops->lookup,
-				    loc, xattr_req);
-			trav = trav->next;
-		}
-	} else {
-		local->call_count = 1;
-		
-		STACK_WIND (frame,
-			    stripe_stack_unwind_inode_lookup_cbk,
-			    FIRST_CHILD(this),
-			    FIRST_CHILD(this)->fops->lookup,
-			    loc, xattr_req);
-	}
+stripe_lookup (call_frame_t *frame, xlator_t *this, loc_t *loc, 
+               dict_t *xattr_req)
+{
+        stripe_local_t   *local = NULL;
+        xlator_list_t    *trav = NULL;
+        stripe_private_t *priv = NULL;
+        char              send_lookup_to_all = 0;
+        int32_t           op_errno = 1;
+
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (loc, err);
+        VALIDATE_OR_GOTO (loc->path, err);
+        VALIDATE_OR_GOTO (loc->inode, err);
+
+        priv = this->private;
+        trav = this->children;
+
+        /* Initialization */
+        local = CALLOC (1, sizeof (stripe_local_t));
+        if (!local) {
+                op_errno = ENOMEM;
+                goto err;
+        }
+        local->op_ret = -1;
+        frame->local = local;
+
+        if ((!loc->inode->st_mode) || S_ISDIR (loc->inode->st_mode) || 
+            S_ISREG (loc->inode->st_mode)) {
+                send_lookup_to_all = 1;
+        }
+
+        if (send_lookup_to_all) {
+                /* Everytime in stripe lookup, all child nodes 
+                   should be looked up */
+                local->call_count = priv->child_count;
+                while (trav) {
+                        STACK_WIND (frame, stripe_lookup_cbk, trav->xlator, 
+                                    trav->xlator->fops->lookup,
+                                    loc, xattr_req);
+                        trav = trav->next;
+                }
+        } else {
+                local->call_count = 1;
+                
+                STACK_WIND (frame, stripe_lookup_cbk, FIRST_CHILD(this), 
+                            FIRST_CHILD(this)->fops->lookup,
+                            loc, xattr_req);
+        }
   
-	return 0;
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno, NULL, NULL);
+        return 0;
 }
 
 /**
  * stripe_stat -
  */
 int32_t
-stripe_stat (call_frame_t *frame,
-	     xlator_t *this,
-	     loc_t *loc)
+stripe_stat (call_frame_t *frame, xlator_t *this, loc_t *loc)
 { 
-	int send_lookup_to_all = 0;
-	xlator_list_t *trav = NULL;
-	stripe_local_t *local = NULL;
-	stripe_private_t *priv = this->private;
-
-	STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc);
-
-	if (S_ISDIR (loc->inode->st_mode) || S_ISREG (loc->inode->st_mode))
-		send_lookup_to_all = 1;
-
-	if (!send_lookup_to_all) {
-		STACK_WIND (frame,
-			    stripe_common_buf_cbk,
-			    FIRST_CHILD(this),
-			    FIRST_CHILD(this)->fops->stat,
-			    loc);
-	} else {
-		/* Initialization */
-		local = CALLOC (1, sizeof (stripe_local_t));
-		ERR_ABORT (local);
-		local->op_ret = -1;
-		frame->local = local;
-		local->inode = loc->inode;
-		local->call_count = priv->child_count;
+        int               send_lookup_to_all = 0;
+        xlator_list_t    *trav = NULL;
+        stripe_local_t   *local = NULL;
+        stripe_private_t *priv = NULL;
+        int32_t           op_errno = 1;
+
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (loc, err);
+        VALIDATE_OR_GOTO (loc->path, err);
+        VALIDATE_OR_GOTO (loc->inode, err);
+
+        priv = this->private;
+        trav = this->children;
+
+        if (priv->first_child_down) {
+                op_errno = ENOTCONN;
+                goto err;
+        }
+
+        if (S_ISDIR (loc->inode->st_mode) || S_ISREG (loc->inode->st_mode))
+                send_lookup_to_all = 1;
+
+        if (!send_lookup_to_all) {
+                STACK_WIND (frame, stripe_common_buf_cbk, FIRST_CHILD(this), 
+                            FIRST_CHILD(this)->fops->stat, loc);
+        } else {
+                /* Initialization */
+                local = CALLOC (1, sizeof (stripe_local_t));
+                if (!local) {
+                        op_errno = ENOMEM;
+                        goto err;
+                }
+                local->op_ret = -1;
+                frame->local = local;
+                local->inode = loc->inode;
+                local->call_count = priv->child_count;
     
-		trav = this->children;
-		while (trav) {
-			STACK_WIND (frame,
-				    stripe_stack_unwind_buf_cbk,
-				    trav->xlator,
-				    trav->xlator->fops->stat,
-				    loc);
-			trav = trav->next;
-		}
-	}
-	return 0;
+                while (trav) {
+                        STACK_WIND (frame, stripe_stack_unwind_buf_cbk,
+                                    trav->xlator, trav->xlator->fops->stat, 
+                                    loc);
+                        trav = trav->next;
+                }
+        }
+
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno, NULL);
+        return 0;
 }
 
 
@@ -592,54 +501,57 @@ stripe_stat (call_frame_t *frame,
  * stripe_chmod -
  */
 int32_t
-stripe_chmod (call_frame_t *frame,
-	      xlator_t *this,
-	      loc_t *loc,
-	      mode_t mode)
-{
-	int send_fop_to_all = 0;
-	xlator_list_t *trav = NULL;
-	stripe_local_t *local = NULL;
-	stripe_private_t *priv = this->private;
-
-	STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc);
-
-	if (priv->first_child_down) {
-		gf_log (this->name, GF_LOG_WARNING, 
-			"First node down, returning ENOTCONN");
-		STACK_UNWIND (frame, -1, ENOTCONN, NULL);
-		return 0;
-	}
-
-	if (S_ISDIR (loc->inode->st_mode) || S_ISREG (loc->inode->st_mode))
-		send_fop_to_all = 1;
-
-	if (!send_fop_to_all) {
-		STACK_WIND (frame,
-			    stripe_common_buf_cbk,
-			    FIRST_CHILD(this),
-			    FIRST_CHILD(this)->fops->chmod,
-			    loc, mode);
-	} else {
-		/* Initialization */
-		local = CALLOC (1, sizeof (stripe_local_t));
-		ERR_ABORT (local);
-		local->op_ret = -1;
-		frame->local = local;
-		local->inode = loc->inode;
-		local->call_count = priv->child_count;
-
-		trav = this->children;
-		while (trav) {
-			STACK_WIND (frame,
-				    stripe_stack_unwind_buf_cbk,
-				    trav->xlator,
-				    trav->xlator->fops->chmod,
-				    loc, mode);
-			trav = trav->next;
-		}
-	}
-	return 0;
+stripe_chmod (call_frame_t *frame, xlator_t *this, loc_t *loc, mode_t mode)
+{
+        int               send_fop_to_all = 0;
+        xlator_list_t    *trav = NULL;
+        stripe_local_t   *local = NULL;
+        stripe_private_t *priv = NULL;
+        int32_t           op_errno = 1;
+
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (loc, err);
+        VALIDATE_OR_GOTO (loc->path, err);
+        VALIDATE_OR_GOTO (loc->inode, err);
+
+        priv = this->private;
+        trav = this->children;
+
+        if (priv->first_child_down) {
+                op_errno = ENOTCONN;
+                goto err;
+        }
+
+        if (S_ISDIR (loc->inode->st_mode) || S_ISREG (loc->inode->st_mode))
+                send_fop_to_all = 1;
+
+        if (!send_fop_to_all) {
+                STACK_WIND (frame, stripe_common_buf_cbk, FIRST_CHILD(this),
+                            FIRST_CHILD(this)->fops->chmod, loc, mode);
+        } else {
+                /* Initialization */
+                local = CALLOC (1, sizeof (stripe_local_t));
+                if (!local) {
+                        op_errno = ENOMEM;
+                        goto err;
+                }
+                local->op_ret = -1;
+                frame->local = local;
+                local->inode = loc->inode;
+                local->call_count = priv->child_count;
+
+                while (trav) {
+                        STACK_WIND (frame, stripe_stack_unwind_buf_cbk,
+                                    trav->xlator, trav->xlator->fops->chmod,
+                                    loc, mode);
+                        trav = trav->next;
+                }
+        }
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno, NULL);
+        return 0;
 }
 
 
@@ -647,57 +559,59 @@ stripe_chmod (call_frame_t *frame,
  * stripe_chown - 
  */
 int32_t
-stripe_chown (call_frame_t *frame,
-	      xlator_t *this,
-	      loc_t *loc,
-	      uid_t uid,
-	      gid_t gid)
-{
-	int send_fop_to_all = 0;
-	xlator_list_t *trav = NULL;
-	stripe_local_t *local = NULL;
-	stripe_private_t *priv = this->private;
-
-	STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc);
-
-	if (priv->first_child_down) {
-		gf_log (this->name, GF_LOG_WARNING, 
-			"First node down, returning ENOTCONN");
-		STACK_UNWIND (frame, -1, ENOTCONN, NULL);
-		return 0;
-	}
-
-	if (S_ISDIR (loc->inode->st_mode) || S_ISREG (loc->inode->st_mode))
-		send_fop_to_all = 1;
-
-	trav = this->children;
-	if (!send_fop_to_all) {
-		STACK_WIND (frame,
-			    stripe_common_buf_cbk,
-			    trav->xlator,
-			    trav->xlator->fops->chown,
-			    loc, uid, gid);
-	} else {
-		/* Initialization */
-		local = CALLOC (1, sizeof (stripe_local_t));
-		ERR_ABORT (local);
-		local->op_ret = -1;
-		frame->local = local;
-		local->inode = loc->inode;
-		local->call_count = priv->child_count;
-
-		trav = this->children;
-		while (trav) {
-			STACK_WIND (frame,
-				    stripe_stack_unwind_buf_cbk,
-				    trav->xlator,
-				    trav->xlator->fops->chown,
-				    loc, uid, gid);
-			trav = trav->next;
-		}
-	}
-
-	return 0;
+stripe_chown (call_frame_t *frame, xlator_t *this, loc_t *loc, uid_t uid,
+              gid_t gid)
+{
+        int               send_fop_to_all = 0;
+        xlator_list_t    *trav = NULL;
+        stripe_local_t   *local = NULL;
+        stripe_private_t *priv = NULL;
+        int32_t           op_errno = 1;
+
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (loc, err);
+        VALIDATE_OR_GOTO (loc->path, err);
+        VALIDATE_OR_GOTO (loc->inode, err);
+
+        priv = this->private;
+        trav = this->children;
+
+        if (priv->first_child_down) {
+                op_errno = ENOTCONN;
+                goto err;
+        }
+
+        if (S_ISDIR (loc->inode->st_mode) || S_ISREG (loc->inode->st_mode))
+                send_fop_to_all = 1;
+
+        if (!send_fop_to_all) {
+                STACK_WIND (frame, stripe_common_buf_cbk, trav->xlator,
+                            trav->xlator->fops->chown, loc, uid, gid);
+        } else {
+                /* Initialization */
+                local = CALLOC (1, sizeof (stripe_local_t));
+                if (!local) {
+                        op_errno = ENOMEM;
+                        goto err;
+                }
+                local->op_ret = -1;
+                frame->local = local;
+                local->inode = loc->inode;
+                local->call_count = priv->child_count;
+
+                while (trav) {
+                        STACK_WIND (frame, stripe_stack_unwind_buf_cbk,
+                                    trav->xlator, trav->xlator->fops->chown,
+                                    loc, uid, gid);
+                        trav = trav->next;
+                }
+        }
+
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno, NULL);
+        return 0;
 }
 
 
@@ -705,46 +619,45 @@ stripe_chown (call_frame_t *frame,
  * stripe_statfs_cbk - 
  */
 int32_t
-stripe_statfs_cbk (call_frame_t *frame,
-		   void *cookie,
-		   xlator_t *this,
-		   int32_t op_ret,
-		   int32_t op_errno,
-		   struct statvfs *stbuf)
-{
-	stripe_local_t *local = (stripe_local_t *)frame->local;
-	int32_t callcnt;
-	LOCK(&frame->lock);
-	{
-		callcnt = --local->call_count;
-
-		if (op_ret != 0 && op_errno != ENOTCONN) {
-			local->op_errno = op_errno;
-		}
-		if (op_ret == 0) {
-      			struct statvfs *dict_buf = &local->statvfs_buf;
-			dict_buf->f_bsize   = stbuf->f_bsize;
-			dict_buf->f_frsize  = stbuf->f_frsize;
-			dict_buf->f_blocks += stbuf->f_blocks;
-			dict_buf->f_bfree  += stbuf->f_bfree;
-			dict_buf->f_bavail += stbuf->f_bavail;
-			dict_buf->f_files  += stbuf->f_files;
-			dict_buf->f_ffree  += stbuf->f_ffree;
-			dict_buf->f_favail += stbuf->f_favail;
-			dict_buf->f_fsid    = stbuf->f_fsid;
-			dict_buf->f_flag    = stbuf->f_flag;
-			dict_buf->f_namemax = stbuf->f_namemax;
-			local->op_ret = 0;
-		}
-	}
-	UNLOCK (&frame->lock);
+stripe_statfs_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                   int32_t op_ret, int32_t op_errno, struct statvfs *stbuf)
+{
+        stripe_local_t *local = NULL;
+        int32_t         callcnt = 0;
+
+        local = frame->local;
+
+        LOCK(&frame->lock);
+        {
+                callcnt = --local->call_count;
+
+                if (op_ret && (op_errno != ENOTCONN)) {
+                        local->op_errno = op_errno;
+                }
+                if (op_ret == 0) {
+                        struct statvfs *dict_buf = &local->statvfs_buf;
+                        dict_buf->f_bsize   = stbuf->f_bsize;
+                        dict_buf->f_frsize  = stbuf->f_frsize;
+                        dict_buf->f_blocks += stbuf->f_blocks;
+                        dict_buf->f_bfree  += stbuf->f_bfree;
+                        dict_buf->f_bavail += stbuf->f_bavail;
+                        dict_buf->f_files  += stbuf->f_files;
+                        dict_buf->f_ffree  += stbuf->f_ffree;
+                        dict_buf->f_favail += stbuf->f_favail;
+                        dict_buf->f_fsid    = stbuf->f_fsid;
+                        dict_buf->f_flag    = stbuf->f_flag;
+                        dict_buf->f_namemax = stbuf->f_namemax;
+                        local->op_ret = 0;
+                }
+        }
+        UNLOCK (&frame->lock);
   
-	if (!callcnt) {
-		STACK_UNWIND (frame, local->op_ret, 
-			      local->op_errno, &local->statvfs_buf);
-	}
+        if (!callcnt) {
+                STACK_UNWIND (frame, local->op_ret, 
+                              local->op_errno, &local->statvfs_buf);
+        }
   
-	return 0;
+        return 0;
 }
 
 
@@ -752,31 +665,37 @@ stripe_statfs_cbk (call_frame_t *frame,
  * stripe_statfs - 
  */
 int32_t
-stripe_statfs (call_frame_t *frame,
-	       xlator_t *this,
-	       loc_t *loc)
+stripe_statfs (call_frame_t *frame, xlator_t *this, loc_t *loc)
 {
-	stripe_local_t *local = NULL;
-	xlator_list_t *trav = this->children;
+        stripe_local_t   *local = NULL;
+        xlator_list_t    *trav = NULL;
+        stripe_private_t *priv = NULL;
+        int32_t           op_errno = 1;
 
-	/* Initialization */
-	local = CALLOC (1, sizeof (stripe_local_t));
-	ERR_ABORT (local);
-	local->op_ret = -1;
-	local->op_errno = ENOTCONN;
-	frame->local = local;
+        trav = this->children;
+        priv = this->private;
 
-	local->call_count = ((stripe_private_t *)this->private)->child_count;
-	while (trav) {
-		STACK_WIND (frame,
-			    stripe_statfs_cbk,
-			    trav->xlator,
-			    trav->xlator->fops->statfs,
-			    loc);
-		trav = trav->next;
-	}
+        /* Initialization */
+        local = CALLOC (1, sizeof (stripe_local_t));
+        if (!local) {
+                op_errno = ENOMEM;
+                goto err;
+        }
+        local->op_ret = -1;
+        local->op_errno = ENOTCONN;
+        frame->local = local;
+
+        local->call_count = priv->child_count;
+        while (trav) {
+                STACK_WIND (frame, stripe_statfs_cbk, trav->xlator,
+                            trav->xlator->fops->statfs, loc);
+                trav = trav->next;
+        }
 
-	return 0;
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno, NULL);
+        return 0;
 }
 
 
@@ -784,56 +703,58 @@ stripe_statfs (call_frame_t *frame,
  * stripe_truncate - 
  */
 int32_t
-stripe_truncate (call_frame_t *frame,
-		 xlator_t *this,
-		 loc_t *loc,
-		 off_t offset)
-{
-	int send_fop_to_all = 0;
-	stripe_local_t *local = NULL;
-	stripe_private_t *priv = this->private;
-	xlator_list_t *trav = this->children;
-
-	STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc);
-
-	if (priv->first_child_down) {
-		gf_log (this->name, GF_LOG_WARNING, 
-			"First node down, returning ENOTCONN");
-		STACK_UNWIND (frame, -1, ENOTCONN, NULL);
-		return 0;
-	}
-
-	if (S_ISDIR (loc->inode->st_mode) || S_ISREG (loc->inode->st_mode))
-		send_fop_to_all = 1;
-
-	if (!send_fop_to_all) {
-		STACK_WIND (frame,
-			    stripe_common_buf_cbk,
-			    trav->xlator,
-			    trav->xlator->fops->truncate,
-			    loc,
-			    offset);
-	} else {
-		/* Initialization */
-		local = CALLOC (1, sizeof (stripe_local_t));
-		ERR_ABORT (local);
-		local->op_ret = -1;
-		frame->local = local;
-		local->inode = loc->inode;
-		local->call_count = priv->child_count;
+stripe_truncate (call_frame_t *frame, xlator_t *this, loc_t *loc, off_t offset)
+{
+        int               send_fop_to_all = 0;
+        xlator_list_t    *trav = NULL;
+        stripe_local_t   *local = NULL;
+        stripe_private_t *priv = NULL;
+        int32_t           op_errno = 1;
+
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (loc, err);
+        VALIDATE_OR_GOTO (loc->path, err);
+        VALIDATE_OR_GOTO (loc->inode, err);
+
+        priv = this->private;
+        trav = this->children;
+
+        if (priv->first_child_down) {
+                op_errno = ENOTCONN;
+                goto err;
+        }
+
+        if (S_ISDIR (loc->inode->st_mode) || S_ISREG (loc->inode->st_mode))
+                send_fop_to_all = 1;
+
+        if (!send_fop_to_all) {
+                STACK_WIND (frame, stripe_common_buf_cbk, trav->xlator,
+                            trav->xlator->fops->truncate, loc, offset);
+        } else {
+                /* Initialization */
+                local = CALLOC (1, sizeof (stripe_local_t));
+                if (!local) {
+                        op_errno = ENOMEM;
+                        goto err;
+                }
+                local->op_ret = -1;
+                frame->local = local;
+                local->inode = loc->inode;
+                local->call_count = priv->child_count;
     
-		while (trav) {
-			STACK_WIND (frame,
-				    stripe_stack_unwind_buf_cbk,
-				    trav->xlator,
-				    trav->xlator->fops->truncate,
-				    loc,
-				    offset);
-			trav = trav->next;
-		}
-	}
+                while (trav) {
+                        STACK_WIND (frame, stripe_stack_unwind_buf_cbk,
+                                    trav->xlator, trav->xlator->fops->truncate,
+                                    loc, offset);
+                        trav = trav->next;
+                }
+        }
 
-	return 0;
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno, NULL);
+        return 0;
 }
 
 
@@ -841,130 +762,142 @@ stripe_truncate (call_frame_t *frame,
  * stripe_utimens - 
  */
 int32_t 
-stripe_utimens (call_frame_t *frame,
-		xlator_t *this,
-		loc_t *loc,
-		struct timespec tv[2])
-{
-	int send_fop_to_all = 0;
-	stripe_local_t *local = NULL;
-	stripe_private_t *priv = this->private;
-	xlator_list_t *trav = this->children;
-
-	STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc);
-
-	if (priv->first_child_down) {
-		gf_log (this->name, GF_LOG_WARNING, 
-			"First node down, returning ENOTCONN");
-		STACK_UNWIND (frame, -1, ENOTCONN, NULL);
-		return 0;
-	}
-
-	if (S_ISDIR (loc->inode->st_mode) || S_ISREG (loc->inode->st_mode))
-		send_fop_to_all = 1;
-
-	if (!send_fop_to_all) {
-		STACK_WIND (frame,
-			    stripe_common_buf_cbk,
-			    trav->xlator,
-			    trav->xlator->fops->utimens,
-			    loc, tv);
-	} else {
-		/* Initialization */
-		local = CALLOC (1, sizeof (stripe_local_t));
-		ERR_ABORT (local);
-		local->op_ret = -1;
-		frame->local = local;
-		local->inode = loc->inode;
-		local->call_count = priv->child_count;
+stripe_utimens (call_frame_t *frame, xlator_t *this, loc_t *loc,
+                struct timespec tv[2])
+{
+        int               send_fop_to_all = 0;
+        xlator_list_t    *trav = NULL;
+        stripe_local_t   *local = NULL;
+        stripe_private_t *priv = NULL;
+        int32_t           op_errno = 1;
+
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (loc, err);
+        VALIDATE_OR_GOTO (loc->path, err);
+        VALIDATE_OR_GOTO (loc->inode, err);
+
+        priv = this->private;
+        trav = this->children;
+
+        if (priv->first_child_down) {
+                op_errno = ENOTCONN;
+                goto err;
+        }
+
+        if (S_ISDIR (loc->inode->st_mode) || S_ISREG (loc->inode->st_mode))
+                send_fop_to_all = 1;
+
+        if (!send_fop_to_all) {
+                STACK_WIND (frame, stripe_common_buf_cbk, trav->xlator,
+                            trav->xlator->fops->utimens, loc, tv);
+        } else {
+                /* Initialization */
+                local = CALLOC (1, sizeof (stripe_local_t));
+                if (!local) {
+                        op_errno = ENOMEM;
+                        goto err;
+                }
+                local->op_ret = -1;
+                frame->local = local;
+                local->inode = loc->inode;
+                local->call_count = priv->child_count;
     
-		while (trav) {
-			STACK_WIND (frame,
-				    stripe_stack_unwind_buf_cbk,
-				    trav->xlator,
-				    trav->xlator->fops->utimens,
-				    loc, tv);
-			trav = trav->next;
-		}
-	}
-	return 0;
+                while (trav) {
+                        STACK_WIND (frame, stripe_stack_unwind_buf_cbk,
+                                    trav->xlator, trav->xlator->fops->utimens,
+                                    loc, tv);
+                        trav = trav->next;
+                }
+        }
+
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno, NULL);
+        return 0;
 }
 
 
 int32_t 
-stripe_first_rename_cbk (call_frame_t *frame,
-			 void *cookie,
-			 xlator_t *this,
-			 int32_t op_ret,
-			 int32_t op_errno,
-			 struct stat *buf)
-{
-	stripe_local_t *local = frame->local;
-	xlator_list_t *trav = this->children;
-
-	if (op_ret == -1) 
-	{
-		STACK_UNWIND (frame, op_ret, op_errno, buf);
-		return 0;
-	}
-
-	local->op_ret = 0;
-	local->stbuf = *buf;
-	local->call_count--;
-	trav = trav->next; /* Skip first child */
-
-	while (trav) {
-		STACK_WIND (frame,
-			    stripe_stack_unwind_buf_cbk,
-			    trav->xlator,
-			    trav->xlator->fops->rename,
-			    &local->loc, &local->loc2);
-		trav = trav->next;
-	}
-
-	return 0;
+stripe_first_rename_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                         int32_t op_ret, int32_t op_errno, struct stat *buf)
+{
+        stripe_local_t *local = NULL;
+        xlator_list_t  *trav = NULL;
+
+        if (op_ret == -1) {
+                goto unwind;
+        }
+
+        local = frame->local;
+        trav = this->children;
+
+        local->op_ret = 0;
+        local->stbuf = *buf;
+        local->call_count--;
+        trav = trav->next; /* Skip first child */
+
+        while (trav) {
+                STACK_WIND (frame, stripe_stack_unwind_buf_cbk,
+                            trav->xlator, trav->xlator->fops->rename,
+                            &local->loc, &local->loc2);
+                trav = trav->next;
+        }
+        return 0;
+
+ unwind:
+        STACK_UNWIND (frame, op_ret, op_errno, buf);
+        return 0;
 }
 /**
  * stripe_rename - 
  */
 int32_t
-stripe_rename (call_frame_t *frame,
-	       xlator_t *this,
-	       loc_t *oldloc,
-	       loc_t *newloc)
-{
-	stripe_private_t *priv = this->private;
-	stripe_local_t *local = NULL;
-	xlator_list_t *trav = this->children;
-
-	STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (oldloc);
-
-	if (priv->first_child_down) {
-		gf_log (this->name, GF_LOG_WARNING, 
-			"First node down, returning ENOTCONN");
-		STACK_UNWIND (frame, -1, EIO, NULL);
-		return 0;
-	}
-
-	/* Initialization */
-	local = CALLOC (1, sizeof (stripe_local_t));
-	ERR_ABORT (local);
-	local->op_ret = -1;
-	local->inode = oldloc->inode;
-	loc_copy (&local->loc, oldloc);
-	loc_copy (&local->loc2, newloc);
-
-	local->call_count = priv->child_count;
+stripe_rename (call_frame_t *frame, xlator_t *this, loc_t *oldloc, 
+               loc_t *newloc)
+{
+        stripe_private_t *priv = NULL;
+        stripe_local_t   *local = NULL;
+        xlator_list_t    *trav = NULL;
+        int32_t           op_errno = 1;
+
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (oldloc, err);
+        VALIDATE_OR_GOTO (oldloc->path, err);
+        VALIDATE_OR_GOTO (oldloc->inode, err);
+        VALIDATE_OR_GOTO (newloc, err);
+
+        priv = this->private;
+        trav = this->children;
+
+        if (priv->first_child_down) {
+                op_errno = ENOTCONN;
+                goto err;
+        }
+
+        /* Initialization */
+        local = CALLOC (1, sizeof (stripe_local_t));
+        if (!local) {
+                op_errno = ENOMEM;
+                goto err;
+        }
+        local->op_ret = -1;
+        local->inode = oldloc->inode;
+        loc_copy (&local->loc, oldloc);
+        loc_copy (&local->loc2, newloc);
+
+        local->call_count = priv->child_count;
   
-	frame->local = local;
+        frame->local = local;
 
-	STACK_WIND (frame,
-		    stripe_first_rename_cbk,
-		    trav->xlator,
-		    trav->xlator->fops->rename,
-		    oldloc, newloc);
+        STACK_WIND (frame, stripe_first_rename_cbk, trav->xlator,
+                    trav->xlator->fops->rename, oldloc, newloc);
 
-	return 0;
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno, NULL);
+        return 0;
 }
 
 
@@ -972,20 +905,23 @@ stripe_rename (call_frame_t *frame,
  * stripe_access - 
  */
 int32_t
-stripe_access (call_frame_t *frame,
-	       xlator_t *this,
-	       loc_t *loc,
-	       int32_t mask)
+stripe_access (call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t mask)
 {
-	STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc);
+        int32_t op_errno = 1;
+
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (loc, err);
+        VALIDATE_OR_GOTO (loc->path, err);
+        VALIDATE_OR_GOTO (loc->inode, err);
 
-	STACK_WIND (frame,
-		    stripe_common_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->access,
-		    loc, mask);
+        STACK_WIND (frame, stripe_common_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->access, loc, mask);
 
-	return 0;
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno);
+        return 0;
 }
 
 
@@ -993,16 +929,11 @@ stripe_access (call_frame_t *frame,
  * stripe_readlink_cbk - 
  */
 int32_t 
-stripe_readlink_cbk (call_frame_t *frame,
-		     void *cookie,
-		     xlator_t *this,
-		     int32_t op_ret,
-		     int32_t op_errno,
-		     const char *path)
+stripe_readlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                     int32_t op_ret, int32_t op_errno, const char *path)
 {
-	STACK_UNWIND (frame, op_ret, op_errno, path);
-
-	return 0;
+        STACK_UNWIND (frame, op_ret, op_errno, path);
+        return 0;
 }
 
 
@@ -1010,29 +941,23 @@ stripe_readlink_cbk (call_frame_t *frame,
  * stripe_readlink - 
  */
 int32_t
-stripe_readlink (call_frame_t *frame,
-		 xlator_t *this,
-		 loc_t *loc,
-		 size_t size)
+stripe_readlink (call_frame_t *frame, xlator_t *this, loc_t *loc, size_t size)
 {
-	stripe_private_t *priv = this->private;
+        int32_t op_errno = 1;
 
-	STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc);
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (loc, err);
+        VALIDATE_OR_GOTO (loc->path, err);
+        VALIDATE_OR_GOTO (loc->inode, err);
 
-	if (priv->first_child_down) {
-		gf_log (this->name, GF_LOG_WARNING, 
-			"First node down, returning ENOTCONN");
-		STACK_UNWIND (frame, -1, ENOTCONN, NULL);
-		return 0;
-	}
+        STACK_WIND (frame, stripe_readlink_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->readlink, loc, size);
 
-	STACK_WIND (frame,
-		    stripe_readlink_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->readlink,
-		    loc, size);
-
-	return 0;
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno, NULL);
+        return 0;
 }
 
 
@@ -1040,123 +965,131 @@ stripe_readlink (call_frame_t *frame,
  * stripe_unlink - 
  */
 int32_t
-stripe_unlink (call_frame_t *frame,
-	       xlator_t *this,
-	       loc_t *loc)
-{
-	int send_fop_to_all = 0;
-	stripe_local_t *local = NULL;
-	stripe_private_t *priv = this->private;
-	xlator_list_t *trav = this->children;
-
-	STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc);
-
-	if (priv->first_child_down) {
-		gf_log (this->name, GF_LOG_WARNING, 
-			"First node down, returning EIO");
-		STACK_UNWIND (frame, -1, EIO);
-		return 0;
-	}
+stripe_unlink (call_frame_t *frame, xlator_t *this, loc_t *loc)
+{
+        int               send_fop_to_all = 0;
+        xlator_list_t    *trav = NULL;
+        stripe_local_t   *local = NULL;
+        stripe_private_t *priv = NULL;
+        int32_t           op_errno = 1;
+
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (loc, err);
+        VALIDATE_OR_GOTO (loc->path, err);
+        VALIDATE_OR_GOTO (loc->inode, err);
+
+        priv = this->private;
+        trav = this->children;
+
+        if (priv->first_child_down) {
+                op_errno = ENOTCONN;
+                goto err;
+        }
  
-	if (S_ISDIR (loc->inode->st_mode) || S_ISREG (loc->inode->st_mode))
-		send_fop_to_all = 1;
-
-	if (!send_fop_to_all) {
-		STACK_WIND (frame,
-			    stripe_common_cbk,
-			    trav->xlator,
-			    trav->xlator->fops->unlink,
-			    loc);
-	} else {
-		/* Initialization */
-		local = CALLOC (1, sizeof (stripe_local_t));
-		ERR_ABORT (local);
-		local->op_ret = -1;
-		frame->local = local;
-		local->call_count = priv->child_count;
+        if (S_ISDIR (loc->inode->st_mode) || S_ISREG (loc->inode->st_mode))
+                send_fop_to_all = 1;
+
+        if (!send_fop_to_all) {
+                STACK_WIND (frame, stripe_common_cbk, trav->xlator,
+                            trav->xlator->fops->unlink, loc);
+        } else {
+                /* Initialization */
+                local = CALLOC (1, sizeof (stripe_local_t));
+                if (!local) {
+                        op_errno = ENOMEM;
+                        goto err;
+                }
+                local->op_ret = -1;
+                frame->local = local;
+                local->call_count = priv->child_count;
     
-		while (trav) {
-			STACK_WIND (frame,
-				    stripe_stack_unwind_cbk,
-				    trav->xlator,
-				    trav->xlator->fops->unlink,
-				    loc);
-			trav = trav->next;
-		}
-	}
+                while (trav) {
+                        STACK_WIND (frame, stripe_stack_unwind_cbk,
+                                    trav->xlator, trav->xlator->fops->unlink,
+                                    loc);
+                        trav = trav->next;
+                }
+        }
 
-	return 0;
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno);
+        return 0;
 }
 
 
 int32_t 
-stripe_first_rmdir_cbk (call_frame_t *frame,
-			void *cookie,
-			xlator_t *this,
-			int32_t op_ret,
-			int32_t op_errno)
+stripe_first_rmdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                        int32_t op_ret, int32_t op_errno)
 {
-	xlator_list_t *trav = this->children;
-	stripe_local_t *local = frame->local;
+        xlator_list_t *trav = NULL;
+        stripe_local_t *local = NULL;
+
+        if (op_ret == -1) {
+                STACK_UNWIND (frame, op_ret, op_errno);
+                return 0;
+        }
 
-	if (op_ret == -1) 
-	{
-		STACK_UNWIND (frame, op_ret, op_errno);
-		return 0;
-	}
+        trav = this->children;
+        local = frame->local;
 
-	local->call_count--; /* First child successful */
-	trav = trav->next; /* Skip first child */
+        local->call_count--; /* First child successful */
+        trav = trav->next; /* Skip first child */
 
-	while (trav) {
-		STACK_WIND (frame,
-			    stripe_stack_unwind_cbk,
-			    trav->xlator,
-			    trav->xlator->fops->rmdir,
-			    &local->loc);
-		trav = trav->next;
-	}
+        while (trav) {
+                STACK_WIND (frame, stripe_stack_unwind_cbk, trav->xlator,
+                            trav->xlator->fops->rmdir, &local->loc);
+                trav = trav->next;
+        }
 
-	return 0;
+        return 0;
 }
 
 /**
  * stripe_rmdir - 
  */
 int32_t
-stripe_rmdir (call_frame_t *frame,
-	      xlator_t *this,
-	      loc_t *loc)
-{
-	stripe_local_t *local = NULL;
-	xlator_list_t *trav = this->children;
-	stripe_private_t *priv = this->private;
-
-	STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc);
-
-	if (priv->first_child_down) {
-		gf_log (this->name, GF_LOG_WARNING, 
-			"First node down, returning EIO");
-		STACK_UNWIND (frame, -1, EIO);
-		return 0;
-	}
-
-	/* Initialization */
-	local = CALLOC (1, sizeof (stripe_local_t));
-	ERR_ABORT (local);
-	local->op_ret = -1;
-	frame->local = local;
-	local->inode = loc->inode;
-	loc_copy (&local->loc, loc);
-	local->call_count = priv->child_count;
+stripe_rmdir (call_frame_t *frame, xlator_t *this, loc_t *loc)
+{
+        xlator_list_t    *trav = NULL;
+        stripe_local_t   *local = NULL;
+        stripe_private_t *priv = NULL;
+        int32_t           op_errno = 1;
+
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (loc, err);
+        VALIDATE_OR_GOTO (loc->path, err);
+        VALIDATE_OR_GOTO (loc->inode, err);
+
+        priv = this->private;
+        trav = this->children;
+
+        if (priv->first_child_down) {
+                op_errno = ENOTCONN;
+                goto err;
+        }
+
+        /* Initialization */
+        local = CALLOC (1, sizeof (stripe_local_t));
+        if (!local) {
+                op_errno = ENOMEM;
+                goto err;
+        }
+        local->op_ret = -1;
+        frame->local = local;
+        local->inode = loc->inode;
+        loc_copy (&local->loc, loc);
+        local->call_count = priv->child_count;
   
-	STACK_WIND (frame,
-		    stripe_first_rmdir_cbk,
-		    trav->xlator,
-		    trav->xlator->fops->rmdir,
-		    loc);
+        STACK_WIND (frame, stripe_first_rmdir_cbk,  trav->xlator,
+                    trav->xlator->fops->rmdir, loc);
 
-	return 0;
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno);
+        return 0;
 }
 
 
@@ -1164,218 +1097,217 @@ stripe_rmdir (call_frame_t *frame,
  * stripe_setxattr - 
  */
 int32_t
-stripe_setxattr (call_frame_t *frame,
-		 xlator_t *this,
-		 loc_t *loc,
-		 dict_t *dict,
-		 int32_t flags)
+stripe_setxattr (call_frame_t *frame, xlator_t *this, loc_t *loc,
+                 dict_t *dict, int32_t flags)
 {
-	stripe_private_t *priv = this->private;
+        stripe_private_t *priv = NULL;
+        int32_t           op_errno = 1;
 
-	STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc);
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (loc, err);
+        VALIDATE_OR_GOTO (loc->path, err);
+        VALIDATE_OR_GOTO (loc->inode, err);
 
-	if (priv->first_child_down) {
-		gf_log (this->name, GF_LOG_WARNING, 
-			"First node down, returning ENOTCONN");
-		STACK_UNWIND (frame, -1, ENOTCONN);
-		return 0;
-	}
+        priv = this->private;
 
-	STACK_WIND (frame,
-		    stripe_common_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->setxattr,
-		    loc, dict, flags);
+        if (priv->first_child_down) {
+                op_errno = ENOTCONN;
+                goto err;
+        }
+
+        STACK_WIND (frame, stripe_common_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->setxattr, loc, dict, flags);
 
-	return 0;
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno);
+        return 0;
 }
 
 
 int32_t 
-stripe_mknod_ifreg_fail_unlink_cbk (call_frame_t *frame,
-				    void *cookie,
-				    xlator_t *this,
-				    int32_t op_ret,
-				    int32_t op_errno)
+stripe_mknod_ifreg_fail_unlink_cbk (call_frame_t *frame, void *cookie,
+                                    xlator_t *this, int32_t op_ret,
+                                    int32_t op_errno)
 {
-	int32_t callcnt = 0;
-	stripe_local_t *local = frame->local;
+        int32_t         callcnt = 0;
+        stripe_local_t *local = NULL;
 
-	LOCK (&frame->lock);
-	{
-		callcnt = --local->call_count;
-	}
-	UNLOCK (&frame->lock);
+        local = frame->local;
 
-	if (!callcnt) {
-		loc_wipe (&local->loc);
-		STACK_UNWIND (frame, local->op_ret, local->op_errno, 
-			      local->inode, &local->stbuf);
-	}
+        LOCK (&frame->lock);
+        {
+                callcnt = --local->call_count;
+        }
+        UNLOCK (&frame->lock);
 
-	return 0;
+        if (!callcnt) {
+                loc_wipe (&local->loc);
+                STACK_UNWIND (frame, local->op_ret, local->op_errno, 
+                              local->inode, &local->stbuf);
+        }
+
+        return 0;
 }
 
 
 /**
  */
 int32_t
-stripe_mknod_ifreg_setxattr_cbk (call_frame_t *frame,
-				 void *cookie,
-				 xlator_t *this,
-				 int32_t op_ret,
-				 int32_t op_errno)
-{
-	int32_t callcnt = 0;
-	stripe_local_t *local = frame->local;
-	stripe_private_t *priv = this->private;
-	xlator_list_t *trav = this->children;
-
-	LOCK (&frame->lock);
-	{
-		callcnt = --local->call_count;
+stripe_mknod_ifreg_setxattr_cbk (call_frame_t *frame, void *cookie,
+                                 xlator_t *this, int32_t op_ret,
+                                 int32_t op_errno)
+{
+        int32_t           callcnt = 0;
+        stripe_local_t   *local = NULL;
+        stripe_private_t *priv = NULL;
+        xlator_list_t    *trav = NULL;
+
+        LOCK (&frame->lock);
+        {
+                callcnt = --local->call_count;
     
-		if (op_ret == -1) {
-			gf_log (this->name, GF_LOG_WARNING, 
-				"%s returned error %s",
-				((call_frame_t *)cookie)->this->name, 
-				strerror (op_errno));
-			local->op_ret = -1;
-			local->op_errno = op_errno;
-		}
-	}
-	UNLOCK (&frame->lock);
-
-	if (!callcnt) {
-		if (local->op_ret == -1) {
-			local->call_count = priv->child_count;
-			while (trav) {
-				STACK_WIND (frame,
-					    stripe_mknod_ifreg_fail_unlink_cbk,
-					    trav->xlator,
-					    trav->xlator->fops->unlink,
-					    &local->loc);
-				trav = trav->next;
-			}
-			return 0;
-		}
-
-		loc_wipe (&local->loc);
-		STACK_UNWIND (frame, local->op_ret, local->op_errno, 
-			      local->inode, &local->stbuf);
-	}
-	return 0;
+                if (op_ret == -1) {
+                        gf_log (this->name, GF_LOG_DEBUG,
+                                "%s returned error %s",
+                                ((call_frame_t *)cookie)->this->name, 
+                                strerror (op_errno));
+                        local->op_ret = -1;
+                        local->op_errno = op_errno;
+                }
+        }
+        UNLOCK (&frame->lock);
+
+        if (!callcnt) {
+                if (local->op_ret == -1) {
+                        local->call_count = priv->child_count;
+                        while (trav) {
+                                STACK_WIND (frame,
+                                            stripe_mknod_ifreg_fail_unlink_cbk,
+                                            trav->xlator,
+                                            trav->xlator->fops->unlink,
+                                            &local->loc);
+                                trav = trav->next;
+                        }
+                        return 0;
+                }
+
+                loc_wipe (&local->loc);
+                STACK_UNWIND (frame, local->op_ret, local->op_errno, 
+                              local->inode, &local->stbuf);
+        }
+        return 0;
 }
 
 /**
  */
 int32_t
-stripe_mknod_ifreg_cbk (call_frame_t *frame,
-			void *cookie,
-			xlator_t *this,
-			int32_t op_ret,
-			int32_t op_errno,
-			inode_t *inode,
-			struct stat *buf)
-{
-	int ret = 0;
-	int32_t callcnt = 0;
-	stripe_local_t *local = frame->local;
-	stripe_private_t *priv = this->private;
-
-	LOCK (&frame->lock);
-	{
-		callcnt = --local->call_count;
+stripe_mknod_ifreg_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                        int32_t op_ret, int32_t op_errno, inode_t *inode,
+                        struct stat *buf)
+{
+        int               ret = 0;
+        int32_t           callcnt = 0;
+        stripe_local_t   *local = NULL;
+        xlator_list_t    *trav = NULL;
+        stripe_private_t *priv = NULL;
+
+        local = frame->local;
+
+        LOCK (&frame->lock);
+        {
+                callcnt = --local->call_count;
     
-		if (op_ret == -1) {
-			gf_log (this->name, GF_LOG_WARNING, 
-				"%s returned error %s",
-				((call_frame_t *)cookie)->this->name, 
-				strerror (op_errno));
-			local->failed = 1;
-			local->op_errno = op_errno;
-		}
+                if (op_ret == -1) {
+                        gf_log (this->name, GF_LOG_DEBUG, 
+                                "%s returned error %s",
+                                ((call_frame_t *)cookie)->this->name, 
+                                strerror (op_errno));
+                        local->failed = 1;
+                        local->op_errno = op_errno;
+                }
     
-		if (op_ret >= 0) {
-			local->op_ret = op_ret;
-			/* Get the mapping in inode private */
-			/* Get the stat buf right */
-			if (local->stbuf.st_blksize == 0) {
-				local->stbuf = *buf;
-				/* Because st_blocks gets added again */
-				local->stbuf.st_blocks = 0;
-			}
-
-			/* Always, pass the inode number of first child 
-			   to the above layer */
-			if (FIRST_CHILD(this) == 
-			    ((call_frame_t *)cookie)->this)
-				local->stbuf.st_ino = buf->st_ino;
+                if (op_ret >= 0) {
+                        local->op_ret = op_ret;
+                        /* Get the mapping in inode private */
+                        /* Get the stat buf right */
+                        if (local->stbuf.st_blksize == 0) {
+                                local->stbuf = *buf;
+                                /* Because st_blocks gets added again */
+                                local->stbuf.st_blocks = 0;
+                        }
+
+                        /* Always, pass the inode number of first child 
+                           to the above layer */
+                        if (FIRST_CHILD(this) == 
+                            ((call_frame_t *)cookie)->this)
+                                local->stbuf.st_ino = buf->st_ino;
       
-			local->stbuf.st_blocks += buf->st_blocks;
-			if (local->stbuf.st_size < buf->st_size)
-				local->stbuf.st_size = buf->st_size;
-			if (local->stbuf.st_blksize != buf->st_blksize) {
-				/* TODO: add to blocks in terms of
-				   original block size */
-			}
-		}
-	}
-	UNLOCK (&frame->lock);
-
-	if (!callcnt) {
-		if (local->failed) 
-			local->op_ret = -1;
-
-		if ((local->op_ret != -1) && priv->xattr_supported) {
-			/* Send a setxattr request to nodes where the
-			   files are created */
-			int32_t index = 0;
-			char size_key[256] = {0,};
-			char index_key[256] = {0,};
-			char count_key[256] = {0,};
-			xlator_list_t *trav = this->children;
-			dict_t *dict = NULL;
-
-			sprintf (size_key, 
-				 "trusted.%s.stripe-size", this->name);
-			sprintf (count_key, 
-				 "trusted.%s.stripe-count", this->name);
-			sprintf (index_key, 
-				 "trusted.%s.stripe-index", this->name);
-
-			local->call_count = priv->child_count;
-
-			while (trav) {
-				dict = get_new_dict ();
-				dict_ref (dict);
-				/* TODO: check return value */
-				ret = dict_set_int64 (dict, size_key, 
-						local->stripe_size);
-				ret = dict_set_int32 (dict, count_key, 
-						local->call_count);
-				ret = dict_set_int32 (dict, index_key, index);
-
-				STACK_WIND (frame,
-					    stripe_mknod_ifreg_setxattr_cbk,
-					    trav->xlator,
-					    trav->xlator->fops->setxattr,
-					    &local->loc, dict, 0);
-	
-				dict_unref (dict);
-				index++;
-				trav = trav->next;
-			}
-		} else {
-			/* Create itself has failed.. so return 
-			   without setxattring */
-			loc_wipe (&local->loc);
-			STACK_UNWIND (frame, local->op_ret, local->op_errno, 
-				      local->inode, &local->stbuf);
-		}
-	}
+                        local->stbuf.st_blocks += buf->st_blocks;
+                        if (local->stbuf.st_size < buf->st_size)
+                                local->stbuf.st_size = buf->st_size;
+                        if (local->stbuf.st_blksize != buf->st_blksize) {
+                                /* TODO: add to blocks in terms of
+                                   original block size */
+                        }
+                }
+        }
+        UNLOCK (&frame->lock);
+
+        if (!callcnt) {
+                if (local->failed) 
+                        local->op_ret = -1;
+
+                if ((local->op_ret != -1) && priv->xattr_supported) {
+                        /* Send a setxattr request to nodes where the
+                           files are created */
+                        int32_t index = 0;
+                        char size_key[256] = {0,};
+                        char index_key[256] = {0,};
+                        char count_key[256] = {0,};
+                        dict_t *dict = NULL;
+
+                        trav = this->children;
+                        sprintf (size_key, 
+                                 "trusted.%s.stripe-size", this->name);
+                        sprintf (count_key, 
+                                 "trusted.%s.stripe-count", this->name);
+                        sprintf (index_key, 
+                                 "trusted.%s.stripe-index", this->name);
+
+                        local->call_count = priv->child_count;
+
+                        while (trav) {
+                                dict = get_new_dict ();
+                                dict_ref (dict);
+                                /* TODO: check return value */
+                                ret = dict_set_int64 (dict, size_key, 
+                                                      local->stripe_size);
+                                ret = dict_set_int32 (dict, count_key, 
+                                                      local->call_count);
+                                ret = dict_set_int32 (dict, index_key, index);
+
+                                STACK_WIND (frame,
+                                            stripe_mknod_ifreg_setxattr_cbk,
+                                            trav->xlator,
+                                            trav->xlator->fops->setxattr,
+                                            &local->loc, dict, 0);
+        
+                                dict_unref (dict);
+                                index++;
+                                trav = trav->next;
+                        }
+                } else {
+                        /* Create itself has failed.. so return 
+                           without setxattring */
+                        loc_wipe (&local->loc);
+                        STACK_UNWIND (frame, local->op_ret, local->op_errno, 
+                                      local->inode, &local->stbuf);
+                }
+        }
   
-	return 0;
+        return 0;
 }
 
 
@@ -1383,73 +1315,78 @@ stripe_mknod_ifreg_cbk (call_frame_t *frame,
  * stripe_mknod - 
  */
 int32_t
-stripe_mknod (call_frame_t *frame,
-	      xlator_t *this,
-	      loc_t *loc,
-	      mode_t mode,
-	      dev_t rdev)
-{
-	stripe_private_t *priv = this->private;
-	stripe_local_t *local = NULL;
-	xlator_list_t *trav = NULL;	
+stripe_mknod (call_frame_t *frame, xlator_t *this, loc_t *loc, mode_t mode,
+              dev_t rdev)
+{
+        stripe_private_t *priv = NULL;
+        stripe_local_t   *local = NULL;
+        xlator_list_t    *trav = NULL;     
+        int32_t           op_errno = 1;
+
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (loc, err);
+        VALIDATE_OR_GOTO (loc->path, err);
+        VALIDATE_OR_GOTO (loc->inode, err);
+
+        priv = this->private;
+        trav = this->children;
   
-	if (priv->first_child_down) {
-		gf_log (this->name, GF_LOG_WARNING, 
-			"First node down, returning EIO");
-		STACK_UNWIND (frame, -1, EIO, NULL, NULL);
-		return 0;
-	}
-
-	if (S_ISREG(mode)) {
-		/* NOTE: on older kernels (older than 2.6.9), 
-		   creat() fops is sent as mknod() + open(). Hence handling 
-		   S_IFREG files is necessary */
-		if (priv->nodes_down) {
-			gf_log (this->name, GF_LOG_WARNING, 
-				"Some node down, returning EIO");
-			STACK_UNWIND (frame, -1, EIO, loc->inode, NULL);
-			return 0;
-		}
-		
-		/* Initialization */
-		local = CALLOC (1, sizeof (stripe_local_t));
-		ERR_ABORT (local);
-		local->op_ret = -1;
-		local->op_errno = ENOTCONN;
-		local->stripe_size = stripe_get_matching_bs (loc->path,
-							     priv->pattern,
-							     priv->block_size);
-		frame->local = local;
-		local->inode = loc->inode;
-		loc_copy (&local->loc, loc);
-
-		/* Everytime in stripe lookup, all child nodes should
-		   be looked up */
-		local->call_count = 
-			((stripe_private_t *)this->private)->child_count;
-		
-		trav = this->children;
-		while (trav) {
-			STACK_WIND (frame,
-				    stripe_mknod_ifreg_cbk,
-				    trav->xlator,
-				    trav->xlator->fops->mknod,
-				    loc, mode, rdev);
-			trav = trav->next;
-		}
-
-		/* This case is handled, no need to continue further. */
-		return 0; 
-	}
-
-
-	STACK_WIND (frame,
-		    stripe_common_inode_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->mknod,
-		    loc, mode, rdev);
-
-	return 0;
+        if (priv->first_child_down) {
+                op_errno = ENOTCONN;
+                goto err;
+        }
+
+        if (S_ISREG(mode)) {
+                /* NOTE: on older kernels (older than 2.6.9), 
+                   creat() fops is sent as mknod() + open(). Hence handling 
+                   S_IFREG files is necessary */
+                if (priv->nodes_down) {
+                        gf_log (this->name, GF_LOG_WARNING, 
+                                "Some node down, returning EIO");
+                        op_errno = EIO;
+                        goto err;
+                }
+                
+                /* Initialization */
+                local = CALLOC (1, sizeof (stripe_local_t));
+                if (!local) {
+                        op_errno = ENOMEM;
+                        goto err;
+                }
+                local->op_ret = -1;
+                local->op_errno = ENOTCONN;
+                local->stripe_size = stripe_get_matching_bs (loc->path,
+                                                             priv->pattern,
+                                                             priv->block_size);
+                frame->local = local;
+                local->inode = loc->inode;
+                loc_copy (&local->loc, loc);
+
+                /* Everytime in stripe lookup, all child nodes should
+                   be looked up */
+                local->call_count = priv->child_count;
+                
+                while (trav) {
+                        STACK_WIND (frame, stripe_mknod_ifreg_cbk,
+                                    trav->xlator, trav->xlator->fops->mknod,
+                                    loc, mode, rdev);
+                        trav = trav->next;
+                }
+
+                /* This case is handled, no need to continue further. */
+                return 0; 
+        }
+
+
+        STACK_WIND (frame, stripe_common_inode_cbk,
+                    FIRST_CHILD(this), FIRST_CHILD(this)->fops->mknod,
+                    loc, mode, rdev);
+
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno, NULL, NULL);
+        return 0;
 }
 
 
@@ -1457,41 +1394,49 @@ stripe_mknod (call_frame_t *frame,
  * stripe_mkdir - 
  */
 int32_t
-stripe_mkdir (call_frame_t *frame,
-	      xlator_t *this,
-	      loc_t *loc,
-	      mode_t mode)
-{
-	stripe_private_t *priv = this->private;
-	stripe_local_t *local = NULL;
-	xlator_list_t *trav = NULL;
+stripe_mkdir (call_frame_t *frame, xlator_t *this, loc_t *loc, mode_t mode)
+{
+        stripe_private_t *priv = NULL;
+        stripe_local_t   *local = NULL;
+        xlator_list_t    *trav = NULL;
+        int32_t           op_errno = 1;
+
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (loc, err);
+        VALIDATE_OR_GOTO (loc->path, err);
+        VALIDATE_OR_GOTO (loc->inode, err);
+
+        priv = this->private;
+        trav = this->children;
   
-	if (priv->first_child_down) {
-		gf_log (this->name, GF_LOG_WARNING, 
-			"First node down, returning EIO");
-		STACK_UNWIND (frame, -1, EIO, NULL, NULL);
-		return 0;
-	}
-
-	/* Initialization */
-	local = CALLOC (1, sizeof (stripe_local_t));
-	ERR_ABORT (local);
-	local->op_ret = -1;
-	local->call_count = priv->child_count;
-	frame->local = local;
-
-	/* Everytime in stripe lookup, all child nodes should be looked up */
-	trav = this->children;
-	while (trav) {
-		STACK_WIND (frame,
-			    stripe_stack_unwind_inode_cbk,
-			    trav->xlator,
-			    trav->xlator->fops->mkdir,
-			    loc, mode);
-		trav = trav->next;
-	}
-
-	return 0;
+        if (priv->first_child_down) {
+                op_errno = ENOTCONN;
+                goto err;
+        }
+
+        /* Initialization */
+        local = CALLOC (1, sizeof (stripe_local_t));
+        if (!local) {
+                op_errno = ENOMEM;
+                goto err;
+        }
+        local->op_ret = -1;
+        local->call_count = priv->child_count;
+        frame->local = local;
+
+        /* Everytime in stripe lookup, all child nodes should be looked up */
+        while (trav) {
+                STACK_WIND (frame, stripe_stack_unwind_inode_cbk,
+                            trav->xlator, trav->xlator->fops->mkdir,
+                            loc, mode);
+                trav = trav->next;
+        }
+
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno, NULL, NULL);
+        return 0;
 }
 
 
@@ -1499,111 +1444,116 @@ stripe_mkdir (call_frame_t *frame,
  * stripe_symlink - 
  */
 int32_t
-stripe_symlink (call_frame_t *frame,
-		xlator_t *this,
-		const char *linkpath,
-		loc_t *loc)
+stripe_symlink (call_frame_t *frame, xlator_t *this, const char *linkpath,
+                loc_t *loc)
 {
-	stripe_private_t *priv = this->private;
+        int32_t           op_errno = 1;
+        stripe_private_t *priv = NULL;
   
-	if (priv->first_child_down) {
-		gf_log (this->name, GF_LOG_WARNING, 
-			"First node down, returning EIO");
-		STACK_UNWIND (frame, -1, EIO, NULL, NULL);
-		return 0;
-	}
+        priv = this->private;
+
+        if (priv->first_child_down) {
+                op_errno = ENOTCONN;
+                goto err;
+        }
+
+        /* send symlink to only first node */
+        STACK_WIND (frame, stripe_common_inode_cbk, FIRST_CHILD(this), 
+                    FIRST_CHILD(this)->fops->symlink, linkpath, loc);
 
-	/* send symlink to only first node */
-	STACK_WIND (frame,
-		    stripe_common_inode_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->symlink,
-		    linkpath, loc);
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno, NULL, NULL);
 
-	return 0;
+        return 0;
 }
 
 /**
  * stripe_link -
  */
 int32_t
-stripe_link (call_frame_t *frame,
-	     xlator_t *this,
-	     loc_t *oldloc,
-	     loc_t *newloc)
-{
-	int send_fop_to_all = 0;
-	stripe_private_t *priv = this->private;
-	stripe_local_t *local = NULL;
-	xlator_list_t *trav = this->children;
-  
-	STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (oldloc);
-
-	if (priv->first_child_down) {
-		gf_log (this->name, GF_LOG_WARNING, 
-			"First node down, returning EIO");
-		STACK_UNWIND (frame, -1, EIO, NULL, NULL);
-		return 0;
-	}
-
-
-	if (S_ISREG (oldloc->inode->st_mode))
-		send_fop_to_all = 1;
-
-	if (!send_fop_to_all) {
-		STACK_WIND (frame,
-			    stripe_common_inode_cbk,
-			    trav->xlator,
-			    trav->xlator->fops->link,
-			    oldloc, newloc);
-	} else {
-		/* Initialization */
-		local = CALLOC (1, sizeof (stripe_local_t));
-		ERR_ABORT (local);
-		local->op_ret = -1;
-		frame->local = local;
-		local->call_count = priv->child_count;
-
-		/* Everytime in stripe lookup, all child
-		   nodes should be looked up */
-		while (trav) {
-			STACK_WIND (frame,
-				    stripe_stack_unwind_inode_cbk,
-				    trav->xlator,
-				    trav->xlator->fops->link,
-				    oldloc, newloc);
-			trav = trav->next;
-		}
-	}
-
-	return 0;
+stripe_link (call_frame_t *frame, xlator_t *this, loc_t *oldloc, loc_t *newloc)
+{
+        int               send_fop_to_all = 0;
+        xlator_list_t    *trav = NULL;
+        stripe_local_t   *local = NULL;
+        stripe_private_t *priv = NULL;
+        int32_t           op_errno = 1;
+
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (oldloc, err);
+        VALIDATE_OR_GOTO (oldloc->path, err);
+        VALIDATE_OR_GOTO (oldloc->inode, err);
+
+        priv = this->private;
+        trav = this->children;
+
+        if (priv->first_child_down) {
+                op_errno = ENOTCONN;
+                goto err;
+        }
+
+
+        if (S_ISREG (oldloc->inode->st_mode))
+                send_fop_to_all = 1;
+
+        if (!send_fop_to_all) {
+                STACK_WIND (frame, stripe_common_inode_cbk,
+                            trav->xlator, trav->xlator->fops->link,
+                            oldloc, newloc);
+        } else {
+                /* Initialization */
+                local = CALLOC (1, sizeof (stripe_local_t));
+                if (!local) {
+                        op_errno = ENOMEM;
+                        goto err;
+                }
+                local->op_ret = -1;
+                frame->local = local;
+                local->call_count = priv->child_count;
+
+                /* Everytime in stripe lookup, all child
+                   nodes should be looked up */
+                while (trav) {
+                        STACK_WIND (frame, stripe_stack_unwind_inode_cbk,
+                                    trav->xlator, trav->xlator->fops->link,
+                                    oldloc, newloc);
+                        trav = trav->next;
+                }
+        }
+
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno, NULL, NULL);
+        return 0;
 }
 
 int32_t 
-stripe_create_fail_unlink_cbk (call_frame_t *frame,
-			       void *cookie,
-			       xlator_t *this,
-			       int32_t op_ret,
-			       int32_t op_errno)
+stripe_create_fail_unlink_cbk (call_frame_t *frame, void *cookie,
+                               xlator_t *this, int32_t op_ret,
+                               int32_t op_errno)
 {
-	int32_t callcnt = 0;
-	fd_t *lfd = NULL;
-	stripe_local_t *local = frame->local;
+        int32_t         callcnt = 0;
+        fd_t           *lfd = NULL;
+        stripe_local_t *local = NULL;
 
-	LOCK (&frame->lock);
-	{
-		callcnt = --local->call_count;
-	}
-	UNLOCK (&frame->lock);
+        local = frame->local;
 
-	if (!callcnt) {
-		lfd = local->fd;
-		loc_wipe (&local->loc);
-		STACK_UNWIND (frame, local->op_ret, local->op_errno, 
-			      local->fd, local->inode, &local->stbuf);
-		fd_unref (lfd);
-	}
-	return 0;
+        LOCK (&frame->lock);
+        {
+                callcnt = --local->call_count;
+        }
+        UNLOCK (&frame->lock);
+
+        if (!callcnt) {
+                lfd = local->fd;
+                loc_wipe (&local->loc);
+                STACK_UNWIND (frame, local->op_ret, local->op_errno, 
+                              local->fd, local->inode, &local->stbuf);
+                fd_unref (lfd);
+        }
+        return 0;
 }
 
 
@@ -1611,181 +1561,175 @@ stripe_create_fail_unlink_cbk (call_frame_t *frame,
  * stripe_create_setxattr_cbk - 
  */
 int32_t
-stripe_create_setxattr_cbk (call_frame_t *frame,
-			    void *cookie,
-			    xlator_t *this,
-			    int32_t op_ret,
-			    int32_t op_errno)
-{
-	fd_t *lfd = NULL;
-	int32_t callcnt = 0;
-	stripe_local_t *local = frame->local;
-	stripe_private_t *priv = this->private;
-	xlator_list_t *trav = this->children;
-
-	LOCK (&frame->lock);
-	{
-		callcnt = --local->call_count;
+stripe_create_setxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                            int32_t op_ret, int32_t op_errno)
+{
+        fd_t             *lfd = NULL;
+        stripe_local_t   *local = NULL;
+        stripe_private_t *priv = NULL;
+        xlator_list_t    *trav = NULL;
+        int32_t           callcnt = 0;
+
+        local = frame->local;
+
+        LOCK (&frame->lock);
+        {
+                callcnt = --local->call_count;
     
-		if (op_ret == -1) {
-			gf_log (this->name, GF_LOG_WARNING, 
-				"%s returned error %s",
-				((call_frame_t *)cookie)->this->name, 
-				strerror (op_errno));
-			local->op_ret = -1;
-			local->op_errno = op_errno;
-		}
-	}
-	UNLOCK (&frame->lock);
-
-	if (!callcnt) {
-		if (local->op_ret == -1) {
-			local->call_count = priv->child_count;
-			while (trav) {
-				STACK_WIND (frame,
-					    stripe_create_fail_unlink_cbk,
-					    trav->xlator,
-					    trav->xlator->fops->unlink,
-					    &local->loc);
-				trav = trav->next;
-			}
-	
-			return 0;
-		}
-
-		lfd = local->fd;
-		loc_wipe (&local->loc);
-		STACK_UNWIND (frame, local->op_ret, local->op_errno,
-			      local->fd, local->inode, &local->stbuf);
-		fd_unref (lfd);
-	}
-
-	return 0;
+                if (op_ret == -1) {
+                        gf_log (this->name, GF_LOG_DEBUG,
+                                "%s returned error %s",
+                                ((call_frame_t *)cookie)->this->name, 
+                                strerror (op_errno));
+                        local->op_ret = -1;
+                        local->op_errno = op_errno;
+                }
+        }
+        UNLOCK (&frame->lock);
+
+        if (!callcnt) {
+                if (local->op_ret == -1) {
+                        local->call_count = priv->child_count;
+                        trav = this->children;
+                        while (trav) {
+                                STACK_WIND (frame,
+                                            stripe_create_fail_unlink_cbk,
+                                            trav->xlator,
+                                            trav->xlator->fops->unlink,
+                                            &local->loc);
+                                trav = trav->next;
+                        }
+        
+                        return 0;
+                }
+
+                lfd = local->fd;
+                loc_wipe (&local->loc);
+                STACK_UNWIND (frame, local->op_ret, local->op_errno,
+                              local->fd, local->inode, &local->stbuf);
+                fd_unref (lfd);
+        }
+
+        return 0;
 }
 
 /**
  * stripe_create_cbk - 
  */
 int32_t
-stripe_create_cbk (call_frame_t *frame,
-		   void *cookie,
-		   xlator_t *this,
-		   int32_t op_ret,
-		   int32_t op_errno,
-		   fd_t *fd,
-		   inode_t *inode,
-		   struct stat *buf)
-{
-	int32_t callcnt = 0;
-	stripe_local_t *local = frame->local;
-	stripe_private_t *priv = this->private;
-	fd_t *lfd = NULL;
-
-	LOCK (&frame->lock);
-	{
-		callcnt = --local->call_count;
+stripe_create_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                   int32_t op_ret, int32_t op_errno, fd_t *fd,
+                   inode_t *inode, struct stat *buf)
+{
+        int32_t           callcnt = 0;
+        stripe_local_t   *local = NULL;
+        stripe_private_t *priv = NULL;
+        fd_t             *lfd = NULL;
+
+        priv  = this->private;
+        local = frame->local;
+
+        LOCK (&frame->lock);
+        {
+                callcnt = --local->call_count;
     
-		if (op_ret == -1) {
-			gf_log (this->name, GF_LOG_WARNING, 
-				"%s returned error %s",
-				((call_frame_t *)cookie)->this->name, 
-				strerror (op_errno));
-			local->failed = 1;
-			local->op_errno = op_errno;
-		}
+                if (op_ret == -1) {
+                        gf_log (this->name, GF_LOG_DEBUG,
+                                "%s returned error %s",
+                                ((call_frame_t *)cookie)->this->name, 
+                                strerror (op_errno));
+                        local->failed = 1;
+                        local->op_errno = op_errno;
+                }
     
-		if (op_ret >= 0) {
-			local->op_ret = op_ret;
-			/* Get the mapping in inode private */
-			/* Get the stat buf right */
-			if (local->stbuf.st_blksize == 0) {
-				local->stbuf = *buf;
-				/* Because st_blocks gets added again */
-				local->stbuf.st_blocks = 0;
-			}
+                if (op_ret >= 0) {
+                        local->op_ret = op_ret;
+                        /* Get the mapping in inode private */
+                        /* Get the stat buf right */
+                        if (local->stbuf.st_blksize == 0) {
+                                local->stbuf = *buf;
+                                /* Because st_blocks gets added again */
+                                local->stbuf.st_blocks = 0;
+                        }
       
-			/* Always, pass the inode number of first
-			   child to the above layer */
-			if (FIRST_CHILD(this) == 
-			    ((call_frame_t *)cookie)->this)
-				local->stbuf.st_ino = buf->st_ino;
+                        /* Always, pass the inode number of first
+                           child to the above layer */
+                        if (FIRST_CHILD(this) == 
+                            ((call_frame_t *)cookie)->this)
+                                local->stbuf.st_ino = buf->st_ino;
       
-			local->stbuf.st_blocks += buf->st_blocks;
-			if (local->stbuf.st_size < buf->st_size)
-				local->stbuf.st_size = buf->st_size;
-			if (local->stbuf.st_blksize != buf->st_blksize) {
-				/* TODO: add to blocks in terms of 
-				   original block size */
-			}
-		}
-	}
-	UNLOCK (&frame->lock);
-
-	if (!callcnt) {
-		if (local->failed)
-			local->op_ret = -1;
-
-		if (local->op_ret >= 0) {
-			fd_ctx_set (local->fd, this, local->stripe_size);
-		}
-
-		if ((local->op_ret != -1) && 
-		    local->stripe_size && priv->xattr_supported) {
-			/* Send a setxattr request to nodes where
-			   the files are created */
-			int ret = 0;
-			int32_t index = 0;
-			char size_key[256] = {0,};
-			char index_key[256] = {0,};
-			char count_key[256] = {0,};
-			xlator_list_t *trav = this->children;
-			dict_t *dict = NULL;
-
-			sprintf (size_key, 
-				 "trusted.%s.stripe-size", this->name);
-			sprintf (count_key, 
-				 "trusted.%s.stripe-count", this->name);
-			sprintf (index_key,
-				 "trusted.%s.stripe-index", this->name);
-
-			local->call_count = priv->child_count;
-	
-			while (trav) {
-				dict = get_new_dict ();
-				dict_ref (dict);
-
-				/* TODO: check return values */
-				ret = dict_set_int64 (dict, size_key, 
-						      local->stripe_size);
-				ret = dict_set_int32 (dict, count_key, 
-						      local->call_count);
-				ret = dict_set_int32 (dict, index_key, index);
-	
-				STACK_WIND (frame,
-					    stripe_create_setxattr_cbk,
-					    trav->xlator,
-					    trav->xlator->fops->setxattr,
-					    &local->loc,
-					    dict,
-					    0);
-	
-				dict_unref (dict);
-				index++;
-				trav = trav->next;
-			}
-		} else {
-			/* Create itself has failed.. so return
-			   without setxattring */
-			lfd = local->fd;
-			loc_wipe (&local->loc);
-			STACK_UNWIND (frame, local->op_ret, local->op_errno, 
-				      local->fd, local->inode, &local->stbuf);
+                        local->stbuf.st_blocks += buf->st_blocks;
+                        if (local->stbuf.st_size < buf->st_size)
+                                local->stbuf.st_size = buf->st_size;
+                        if (local->stbuf.st_blksize != buf->st_blksize) {
+                                /* TODO: add to blocks in terms of 
+                                   original block size */
+                        }
+                }
+        }
+        UNLOCK (&frame->lock);
+
+        if (!callcnt) {
+                if (local->failed)
+                        local->op_ret = -1;
+
+                if (local->op_ret >= 0) 
+                        fd_ctx_set (local->fd, this, local->stripe_size);
+
+                if ((local->op_ret != -1) && 
+                    local->stripe_size && priv->xattr_supported) {
+                        /* Send a setxattr request to nodes where
+                           the files are created */
+                        int            ret = 0;
+                        int32_t        index = 0;
+                        char           size_key[256] = {0,};
+                        char           index_key[256] = {0,};
+                        char           count_key[256] = {0,};
+                        xlator_list_t *trav = this->children;
+                        dict_t        *dict = NULL;
+
+                        sprintf (size_key, 
+                                 "trusted.%s.stripe-size", this->name);
+                        sprintf (count_key, 
+                                 "trusted.%s.stripe-count", this->name);
+                        sprintf (index_key,
+                                 "trusted.%s.stripe-index", this->name);
+
+                        local->call_count = priv->child_count;
+        
+                        while (trav) {
+                                dict = get_new_dict ();
+                                dict_ref (dict);
+
+                                /* TODO: check return values */
+                                ret = dict_set_int64 (dict, size_key, 
+                                                      local->stripe_size);
+                                ret = dict_set_int32 (dict, count_key, 
+                                                      local->call_count);
+                                ret = dict_set_int32 (dict, index_key, index);
+        
+                                STACK_WIND (frame, stripe_create_setxattr_cbk,
+                                            trav->xlator,
+                                            trav->xlator->fops->setxattr,
+                                            &local->loc, dict, 0);
+        
+                                dict_unref (dict);
+                                index++;
+                                trav = trav->next;
+                        }
+                } else {
+                        /* Create itself has failed.. so return
+                           without setxattring */
+                        lfd = local->fd;
+                        loc_wipe (&local->loc);
+                        STACK_UNWIND (frame, local->op_ret, local->op_errno, 
+                                      local->fd, local->inode, &local->stbuf);
       
-			fd_unref (lfd);
-		}
-	}
+                        fd_unref (lfd);
+                }
+        }
   
-	return 0;
+        return 0;
 }
 
 
@@ -1796,100 +1740,100 @@ stripe_create_cbk (call_frame_t *frame,
  * @name- complete path of the file to be created.
  */
 int32_t
-stripe_create (call_frame_t *frame,
-	       xlator_t *this,
-	       loc_t *loc,
-	       int32_t flags,
-	       mode_t mode,
-	       fd_t *fd)
-{
-	stripe_private_t *priv = this->private;
-	stripe_local_t *local = NULL;
-	xlator_list_t *trav = NULL;
-
-	/* files created in O_APPEND mode does not allow lseek() on fd */
-	flags &= ~O_APPEND;
-
-	if (priv->first_child_down || priv->nodes_down) {
-		gf_log (this->name, GF_LOG_WARNING, 
-			"First node down, returning EIO");
-		STACK_UNWIND (frame, -1, EIO, fd, loc->inode, NULL);
-		return 0;
-	}
-
-	/* Initialization */
-	local = CALLOC (1, sizeof (stripe_local_t));
-	ERR_ABORT (local);
-	local->op_ret = -1;
-	local->op_errno = ENOTCONN;
-	local->stripe_size = stripe_get_matching_bs (loc->path,
-						     priv->pattern,
-						     priv->block_size);
-	frame->local = local;
-	local->inode = loc->inode;
-	loc_copy (&local->loc, loc);
-	local->fd = fd_ref (fd);
-
-	local->call_count = ((stripe_private_t *)this->private)->child_count;
-	
-	trav = this->children;
-	while (trav) {
-		STACK_WIND (frame,
-			    stripe_create_cbk,
-			    trav->xlator,
-			    trav->xlator->fops->create,
-			    loc, flags, mode, fd);
-		trav = trav->next;
-	}
+stripe_create (call_frame_t *frame, xlator_t *this, loc_t *loc,
+               int32_t flags, mode_t mode, fd_t *fd)
+{
+        stripe_private_t *priv = NULL;
+        stripe_local_t   *local = NULL;
+        xlator_list_t    *trav = NULL;
+        int32_t           op_errno = 1;
+
+        priv = this->private;
+
+        /* files created in O_APPEND mode does not allow lseek() on fd */
+        flags &= ~O_APPEND;
+
+        if (priv->first_child_down || priv->nodes_down) {
+                gf_log (this->name, GF_LOG_DEBUG, 
+                        "First node down, returning EIO");
+                op_errno = EIO;
+                goto err;
+        }
+
+        /* Initialization */
+        local = CALLOC (1, sizeof (stripe_local_t));
+        if (!local) {
+                op_errno = ENOMEM;
+                goto err;
+        }
+        local->op_ret = -1;
+        local->op_errno = ENOTCONN;
+        local->stripe_size = stripe_get_matching_bs (loc->path,
+                                                     priv->pattern,
+                                                     priv->block_size);
+        frame->local = local;
+        local->inode = loc->inode;
+        loc_copy (&local->loc, loc);
+        local->fd = fd_ref (fd);
+
+        local->call_count = priv->child_count;
+        
+        trav = this->children;
+        while (trav) {
+                STACK_WIND (frame, stripe_create_cbk, trav->xlator,
+                            trav->xlator->fops->create, loc, flags, mode, fd);
+                trav = trav->next;
+        }
        
-	return 0;
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno, NULL, NULL, NULL);
+        return 0;
 }
 
 /**
  * stripe_open_cbk - 
  */
 int32_t
-stripe_open_cbk (call_frame_t *frame,
-		 void *cookie,
-		 xlator_t *this,
-		 int32_t op_ret,
-		 int32_t op_errno,
-		 fd_t *fd)
-{
-	int32_t callcnt = 0;
-	stripe_local_t *local = frame->local;
-
-	LOCK (&frame->lock);
-	{
-		callcnt = --local->call_count;
-
-		if (op_ret == -1) {
-			local->failed = 1;
-			gf_log (this->name, GF_LOG_WARNING, 
-				"%s returned error %s",
-				((call_frame_t *)cookie)->this->name, 
-				strerror (op_errno));
-			local->op_ret = -1;
-			local->op_errno = op_errno;
-		}
+stripe_open_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                 int32_t op_ret, int32_t op_errno, fd_t *fd)
+{
+        int32_t         callcnt = 0;
+        stripe_local_t *local = NULL;
+
+        local = frame->local;
+
+        LOCK (&frame->lock);
+        {
+                callcnt = --local->call_count;
+
+                if (op_ret == -1) {
+                        local->failed = 1;
+                        gf_log (this->name, GF_LOG_DEBUG, 
+                                "%s returned error %s",
+                                ((call_frame_t *)cookie)->this->name, 
+                                strerror (op_errno));
+                        local->op_ret = -1;
+                        local->op_errno = op_errno;
+                }
     
-		if (op_ret >= 0)
-			local->op_ret = op_ret;
-	}
-	UNLOCK (&frame->lock);
+                if (op_ret >= 0)
+                        local->op_ret = op_ret;
+        }
+        UNLOCK (&frame->lock);
   
-	if (!callcnt) {
-		if (local->failed)
-			local->op_ret = -1;
+        if (!callcnt) {
+                if (local->failed)
+                        local->op_ret = -1;
 
-		if (local->op_ret >= 0) {
-			fd_ctx_set (local->fd, this, local->stripe_size);
-		}
-		loc_wipe (&local->loc);
-		STACK_UNWIND (frame, local->op_ret, local->op_errno, fd);
-	}
+                if (local->op_ret >= 0) 
+                        fd_ctx_set (local->fd, this, local->stripe_size);
 
-	return 0;
+                loc_wipe (&local->loc);
+                STACK_UNWIND (frame, local->op_ret, local->op_errno, fd);
+        }
+
+        return 0;
 }
 
 
@@ -1897,183 +1841,183 @@ stripe_open_cbk (call_frame_t *frame,
  * stripe_getxattr_cbk - 
  */
 int32_t
-stripe_open_getxattr_cbk (call_frame_t *frame,
-			  void *cookie,
-			  xlator_t *this,
-			  int32_t op_ret,
-			  int32_t op_errno,
-			  dict_t *dict)
-{
-	int32_t callcnt = 0;
-	stripe_local_t *local = frame->local;
-	xlator_list_t *trav = this->children;
-	stripe_private_t *priv = this->private;
-
-	LOCK (&frame->lock);
-	{
-		callcnt = --local->call_count;
-
-		if (op_ret == -1) {
-			gf_log (this->name, GF_LOG_WARNING, 
-				"%s returned error %s",
-				((call_frame_t *)cookie)->this->name, 
-				strerror (op_errno));
-			local->op_ret = -1;
-			local->op_errno = op_errno;
-			if (op_errno == ENOTCONN)
-				local->failed = 1;
-		}
-	}
-	UNLOCK (&frame->lock);
+stripe_open_getxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                          int32_t op_ret, int32_t op_errno, dict_t *dict)
+{
+        int32_t           callcnt = 0;
+        stripe_local_t   *local = NULL;
+        xlator_list_t    *trav = NULL;
+        stripe_private_t *priv = NULL;
+
+        priv  = this->private;
+        local = frame->local;
+
+        LOCK (&frame->lock);
+        {
+                callcnt = --local->call_count;
+
+                if (op_ret == -1) {
+                        gf_log (this->name, GF_LOG_DEBUG, 
+                                "%s returned error %s",
+                                ((call_frame_t *)cookie)->this->name, 
+                                strerror (op_errno));
+                        local->op_ret = -1;
+                        local->op_errno = op_errno;
+                        if (op_errno == ENOTCONN)
+                                local->failed = 1;
+                }
+        }
+        UNLOCK (&frame->lock);
   
-	if (!callcnt) {
-		if (!local->failed && (local->op_ret != -1)) {
-			/* If getxattr doesn't fails, call open */
-			char size_key[256] = {0,};
-			data_t *stripe_size_data = NULL;
-
-			sprintf (size_key, 
-				 "trusted.%s.stripe-size", this->name);
-			stripe_size_data = dict_get (dict, size_key);
-
-			if (stripe_size_data) {
-				local->stripe_size = 
-					data_to_int64 (stripe_size_data);
-				/*
-				if (local->stripe_size != priv->block_size) {
-					gf_log (this->name, GF_LOG_WARNING,
-						"file(%s) is having different "
-						"block-size", local->loc.path);
-				}
-				*/
-			} else {
-				/* if the file was created using earlier 
-				   versions of stripe */
-				gf_log (this->name, GF_LOG_CRITICAL,
-					"[CRITICAL] Seems like file(%s) "
-					"created using earlier version",
-					local->loc.path);
-			}
-		}
+        if (!callcnt) {
+                if (!local->failed && (local->op_ret != -1)) {
+                        /* If getxattr doesn't fails, call open */
+                        char size_key[256] = {0,};
+                        data_t *stripe_size_data = NULL;
+
+                        sprintf (size_key, 
+                                 "trusted.%s.stripe-size", this->name);
+                        stripe_size_data = dict_get (dict, size_key);
+
+                        if (stripe_size_data) {
+                                local->stripe_size = 
+                                        data_to_int64 (stripe_size_data);
+                                /*
+                                  if (local->stripe_size != priv->block_size) {
+                                  gf_log (this->name, GF_LOG_WARNING,
+                                  "file(%s) is having different "
+                                  "block-size", local->loc.path);
+                                  }
+                                */
+                        } else {
+                                /* if the file was created using earlier 
+                                   versions of stripe */
+                                gf_log (this->name, GF_LOG_DEBUG,
+                                        "[CRITICAL] Seems like file(%s) "
+                                        "created using earlier version",
+                                        local->loc.path);
+                        }
+                }
     
-		local->call_count = priv->child_count;
-
-		while (trav) {
-			STACK_WIND (frame,
-				    stripe_open_cbk,
-				    trav->xlator,
-				    trav->xlator->fops->open,
-				    &local->loc, local->flags, local->fd);
-			trav = trav->next;
-		}
-	}
+                local->call_count = priv->child_count;
+
+                trav = this->children;
+                while (trav) {
+                        STACK_WIND (frame, stripe_open_cbk, trav->xlator,
+                                    trav->xlator->fops->open, &local->loc, 
+                                    local->flags, local->fd);
+                        trav = trav->next;
+                }
+        }
 
-	return 0;
+        return 0;
 }
 
 /**
  * stripe_open - 
  */
 int32_t
-stripe_open (call_frame_t *frame,
-	     xlator_t *this,
-	     loc_t *loc,
-	     int32_t flags,
-	     fd_t *fd)
-{
-	stripe_local_t *local = NULL;
-	stripe_private_t *priv = this->private;
-	xlator_list_t *trav = this->children;
+stripe_open (call_frame_t *frame, xlator_t *this, loc_t *loc,
+             int32_t flags, fd_t *fd)
+{
+        stripe_local_t   *local = NULL;
+        stripe_private_t *priv = NULL;
+        xlator_list_t    *trav = NULL;
+        int32_t           op_errno = 1;
+
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (loc, err);
+        VALIDATE_OR_GOTO (loc->path, err);
+        VALIDATE_OR_GOTO (loc->inode, err);
+
+        priv = this->private;
+        trav = this->children;
+
+        if (priv->first_child_down) {
+                op_errno = ENOTCONN;
+                goto err;
+        }
 
-	STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc);
-  
-	/* files opened in O_APPEND mode does not allow lseek() on fd */
-	flags &= ~O_APPEND;
-
-	if (priv->first_child_down) {
-		gf_log (this->name, GF_LOG_WARNING, 
-			"First node down, returning ENOTCONN");
-		STACK_UNWIND (frame, -1, ENOTCONN, NULL);
-		return 0;
-	}
-
-	/* Initialization */
-	local = CALLOC (1, sizeof (stripe_local_t));
-	ERR_ABORT (local);
-	local->fd = fd;
-	frame->local = local;
-	local->inode = loc->inode;
-	loc_copy (&local->loc, loc);
-
-	/* Striped files */
-	local->flags = flags;
-	local->call_count = priv->child_count;
-	local->stripe_size = stripe_get_matching_bs (loc->path,
-						     priv->pattern,
-						     priv->block_size);
-	
-	if (priv->xattr_supported) {
-		while (trav) {
-			STACK_WIND (frame,
-				    stripe_open_getxattr_cbk,
-				    trav->xlator,
-				    trav->xlator->fops->getxattr,
-				    loc, NULL);
-			trav = trav->next;
-		}
-	} else {
-		while (trav) {
-			STACK_WIND (frame,
-				    stripe_open_cbk,
-				    trav->xlator,
-				    trav->xlator->fops->open,
-				    &local->loc, local->flags, local->fd);
-			trav = trav->next;
-		}
-	}
-
-	return 0;
+        /* Initialization */
+        local = CALLOC (1, sizeof (stripe_local_t));
+        if (!local) {
+                op_errno = ENOMEM;
+                goto err;
+        }
+
+        /* files opened in O_APPEND mode does not allow lseek() on fd */
+        flags &= ~O_APPEND;
+
+        local->fd = fd;
+        frame->local = local;
+        local->inode = loc->inode;
+        loc_copy (&local->loc, loc);
+
+        /* Striped files */
+        local->flags = flags;
+        local->call_count = priv->child_count;
+        local->stripe_size = stripe_get_matching_bs (loc->path,
+                                                     priv->pattern,
+                                                     priv->block_size);
+        
+        if (priv->xattr_supported) {
+                while (trav) {
+                        STACK_WIND (frame, stripe_open_getxattr_cbk,
+                                    trav->xlator, trav->xlator->fops->getxattr,
+                                    loc, NULL);
+                        trav = trav->next;
+                }
+        } else {
+                while (trav) {
+                        STACK_WIND (frame, stripe_open_cbk, trav->xlator,
+                                    trav->xlator->fops->open,
+                                    &local->loc, local->flags, local->fd);
+                        trav = trav->next;
+                }
+        }
+
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno, NULL);
+        return 0;
 }
 
 /**
  * stripe_opendir_cbk - 
  */
 int32_t
-stripe_opendir_cbk (call_frame_t *frame,
-		    void *cookie,
-		    xlator_t *this,
-		    int32_t op_ret,
-		    int32_t op_errno,
-		    fd_t *fd)
-{
-	int32_t callcnt = 0;
-	stripe_local_t *local = frame->local;
-
-	LOCK (&frame->lock);
-	{
-		callcnt = --local->call_count;
-
-		if (op_ret == -1) {
-			gf_log (this->name, GF_LOG_WARNING, 
-				"%s returned error %s",
-				((call_frame_t *)cookie)->this->name, 
-				strerror (op_errno));
-			local->op_ret = -1;
-			local->failed = 1;
-			local->op_errno = op_errno;
-		}
+stripe_opendir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                    int32_t op_ret, int32_t op_errno, fd_t *fd)
+{
+        int32_t         callcnt = 0;
+        stripe_local_t *local = frame->local;
+
+        LOCK (&frame->lock);
+        {
+                callcnt = --local->call_count;
+
+                if (op_ret == -1) {
+                        gf_log (this->name, GF_LOG_DEBUG, 
+                                "%s returned error %s",
+                                ((call_frame_t *)cookie)->this->name, 
+                                strerror (op_errno));
+                        local->op_ret = -1;
+                        local->failed = 1;
+                        local->op_errno = op_errno;
+                }
     
-		if (op_ret >= 0) 
-			local->op_ret = op_ret;
-	}
-	UNLOCK (&frame->lock);
+                if (op_ret >= 0) 
+                        local->op_ret = op_ret;
+        }
+        UNLOCK (&frame->lock);
 
-	if (!callcnt) {
-		STACK_UNWIND (frame, local->op_ret, 
-			      local->op_errno, local->fd);
-	}
+        if (!callcnt) {
+                STACK_UNWIND (frame, local->op_ret, local->op_errno, 
+                              local->fd);
+        }
 
-	return 0;
+        return 0;
 }
 
 
@@ -2081,42 +2025,48 @@ stripe_opendir_cbk (call_frame_t *frame,
  * stripe_opendir - 
  */
 int32_t
-stripe_opendir (call_frame_t *frame,
-		xlator_t *this,
-		loc_t *loc,
-		fd_t *fd)
-{
-	stripe_local_t *local = NULL;
-	stripe_private_t *priv = this->private;
-	xlator_list_t *trav = this->children;
-
-	STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc);
-
-	if (priv->first_child_down) {
-		gf_log (this->name, GF_LOG_WARNING, 
-			"First node down, returning EIO");
-		STACK_UNWIND (frame, -1, EIO, NULL);
-		return 0;
-	}
-
-	/* Initialization */
-	local = CALLOC (1, sizeof (stripe_local_t));
-	ERR_ABORT (local);
-	frame->local = local;
-	local->inode = loc->inode;
-	local->fd = fd;
-	local->call_count = priv->child_count;
-
-	while (trav) {
-		STACK_WIND (frame,
-			    stripe_opendir_cbk,
-			    trav->xlator,
-			    trav->xlator->fops->opendir,
-			    loc, fd);
-		trav = trav->next;
-	}
+stripe_opendir (call_frame_t *frame, xlator_t *this, loc_t *loc, fd_t *fd)
+{
+        xlator_list_t    *trav = NULL;
+        stripe_local_t   *local = NULL;
+        stripe_private_t *priv = NULL;
+        int32_t           op_errno = 1;
+
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (loc, err);
+        VALIDATE_OR_GOTO (loc->path, err);
+        VALIDATE_OR_GOTO (loc->inode, err);
+
+        priv = this->private;
+        trav = this->children;
+
+        if (priv->first_child_down) {
+                op_errno = ENOTCONN;
+                goto err;
+        }
+
+        /* Initialization */
+        local = CALLOC (1, sizeof (stripe_local_t));
+        if (!local) {
+                op_errno = ENOMEM;
+                goto err;
+        }
+        frame->local = local;
+        local->inode = loc->inode;
+        local->fd = fd;
+        local->call_count = priv->child_count;
+
+        while (trav) {
+                STACK_WIND (frame, stripe_opendir_cbk, trav->xlator,
+                            trav->xlator->fops->opendir, loc, fd);
+                trav = trav->next;
+        }
   
-	return 0;
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno, NULL);
+        return 0;
 }
 
 
@@ -2124,15 +2074,11 @@ stripe_opendir (call_frame_t *frame,
  * stripe_getxattr_cbk - 
  */
 int32_t
-stripe_getxattr_cbk (call_frame_t *frame,
-		     void *cookie,
-		     xlator_t *this,
-		     int32_t op_ret,
-		     int32_t op_errno,
-		     dict_t *value)
+stripe_getxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                     int32_t op_ret, int32_t op_errno, dict_t *value)
 {
-	STACK_UNWIND (frame, op_ret, op_errno, value);
-	return 0;
+        STACK_UNWIND (frame, op_ret, op_errno, value);
+        return 0;
 }
 
 
@@ -2140,49 +2086,48 @@ stripe_getxattr_cbk (call_frame_t *frame,
  * stripe_getxattr - 
  */
 int32_t
-stripe_getxattr (call_frame_t *frame,
-		 xlator_t *this,
-		 loc_t *loc,
-		 const char *name)
+stripe_getxattr (call_frame_t *frame, xlator_t *this, loc_t *loc,
+                 const char *name)
 {
-	STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc);
+        int32_t op_errno = 1;
+
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (loc, err);
+        VALIDATE_OR_GOTO (loc->path, err);
+        VALIDATE_OR_GOTO (loc->inode, err);
 
-	STACK_WIND (frame,
-		    stripe_getxattr_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->getxattr,
-		    loc, name);
+        STACK_WIND (frame, stripe_getxattr_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->getxattr, loc, name);
 
-	return 0;
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno, NULL);
+        return 0;
 }
 
 /**
  * stripe_removexattr - 
  */
 int32_t
-stripe_removexattr (call_frame_t *frame,
-		    xlator_t *this,
-		    loc_t *loc,
-		    const char *name)
+stripe_removexattr (call_frame_t *frame, xlator_t *this, loc_t *loc,
+                    const char *name)
 {
-	stripe_private_t *priv = this->private;
+        int32_t op_errno = 1;
 
-	STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (loc);
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (loc, err);
+        VALIDATE_OR_GOTO (loc->path, err);
+        VALIDATE_OR_GOTO (loc->inode, err);
 
-	if (priv->first_child_down) {
-		gf_log (this->name, GF_LOG_WARNING, 
-			"First node down, returning ENOTCONN");
-		STACK_UNWIND (frame, -1, ENOTCONN, NULL);
-		return 0;
-	}
+        STACK_WIND (frame, stripe_common_cbk, FIRST_CHILD(this),
+                    FIRST_CHILD(this)->fops->removexattr, loc, name);
 
-	STACK_WIND (frame,
-		    stripe_common_cbk,
-		    FIRST_CHILD(this),
-		    FIRST_CHILD(this)->fops->removexattr,
-		    loc, name);
-
-	return 0;
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno);
+        return 0;
 }
 
 
@@ -2190,43 +2135,41 @@ stripe_removexattr (call_frame_t *frame,
  * stripe_lk_cbk - 
  */
 int32_t
-stripe_lk_cbk (call_frame_t *frame,
-	       void *cookie,
-	       xlator_t *this,
-	       int32_t op_ret,
-	       int32_t op_errno,
-	       struct flock *lock)
-{
-	int32_t callcnt = 0;
-	stripe_local_t *local = frame->local;
-
-	LOCK (&frame->lock);
-	{
-		callcnt = --local->call_count;
-		if (op_ret == -1) {
-			gf_log (this->name, GF_LOG_WARNING, 
-				"%s returned error %s",
-				((call_frame_t *)cookie)->this->name, 
-				strerror (op_errno));
-			local->op_errno = op_errno;
-			if (op_errno == ENOTCONN)
-				local->failed = 1;
-		}
-		if (op_ret == 0 && local->op_ret == -1) {
-			/* First successful call, copy the *lock */
-			local->op_ret = 0;
-			local->lock = *lock;
-		}
-	}
-	UNLOCK (&frame->lock);
-
-	if (!callcnt) {
-		if (local->failed)
-			local->op_ret = -1;
-		STACK_UNWIND (frame, local->op_ret, 
-			      local->op_errno, &local->lock);
-	}
-	return 0;
+stripe_lk_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+               int32_t op_ret, int32_t op_errno, struct flock *lock)
+{
+        int32_t         callcnt = 0;
+        stripe_local_t *local = NULL;
+
+        local = frame->local;
+
+        LOCK (&frame->lock);
+        {
+                callcnt = --local->call_count;
+                if (op_ret == -1) {
+                        gf_log (this->name, GF_LOG_DEBUG, 
+                                "%s returned error %s",
+                                ((call_frame_t *)cookie)->this->name, 
+                                strerror (op_errno));
+                        local->op_errno = op_errno;
+                        if (op_errno == ENOTCONN)
+                                local->failed = 1;
+                }
+                if (op_ret == 0 && local->op_ret == -1) {
+                        /* First successful call, copy the *lock */
+                        local->op_ret = 0;
+                        local->lock = *lock;
+                }
+        }
+        UNLOCK (&frame->lock);
+
+        if (!callcnt) {
+                if (local->failed)
+                        local->op_ret = -1;
+                STACK_UNWIND (frame, local->op_ret, 
+                              local->op_errno, &local->lock);
+        }
+        return 0;
 }
 
 
@@ -2234,71 +2177,86 @@ stripe_lk_cbk (call_frame_t *frame,
  * stripe_lk - 
  */
 int32_t
-stripe_lk (call_frame_t *frame,
-	   xlator_t *this,
-	   fd_t *fd,
-	   int32_t cmd,
-	   struct flock *lock)
-{
-	stripe_local_t *local = NULL;
-	xlator_list_t *trav = this->children;
-	stripe_private_t *priv = this->private;
-
-	STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (fd);
-	/* Initialization */
-	local = CALLOC (1, sizeof (stripe_local_t));
-	ERR_ABORT (local);
-	local->op_ret = -1;
-	frame->local = local;
+stripe_lk (call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t cmd,
+           struct flock *lock)
+{
+        stripe_local_t   *local = NULL;
+        xlator_list_t    *trav = NULL;
+        stripe_private_t *priv = NULL;
+        int32_t           op_errno = 1;
+
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (fd, err);
+        VALIDATE_OR_GOTO (fd->inode, err);
+
+        trav = this->children;
+        priv = this->private;
+
+        /* Initialization */
+        local = CALLOC (1, sizeof (stripe_local_t));
+        if (!local) {
+                op_errno = ENOMEM;
+                goto err;
+        }
+        local->op_ret = -1;
+        frame->local = local;
   
-	local->call_count = priv->child_count;
-	
-	while (trav) {
-		STACK_WIND (frame,	      
-			    stripe_lk_cbk,
-			    trav->xlator,
-			    trav->xlator->fops->lk,
-			    fd, cmd, lock);
-		trav = trav->next;
-	}
+        local->call_count = priv->child_count;
+        
+        while (trav) {
+                STACK_WIND (frame, stripe_lk_cbk, trav->xlator,
+                            trav->xlator->fops->lk, fd, cmd, lock);
+                trav = trav->next;
+        }
 
-	return 0;
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno, NULL);
+        return 0;
 }
 
 /**
  * stripe_writedir - 
  */
 int32_t
-stripe_setdents (call_frame_t *frame,
-		 xlator_t *this,
-		 fd_t *fd,
-		 int32_t flags,
-		 dir_entry_t *entries,
-		 int32_t count)
-{
-	stripe_local_t *local = NULL;
-	stripe_private_t *priv = this->private;
-	xlator_list_t *trav = this->children;
-
-	STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (fd);
-
-	/* Initialization */
-	local = CALLOC (1, sizeof (stripe_local_t));
-	ERR_ABORT (local);
-	local->op_ret = -1;
-	frame->local = local;
-	local->call_count = priv->child_count;
-
-	while (trav) {
-		STACK_WIND (frame,	      
-			    stripe_stack_unwind_cbk,
-			    trav->xlator,
-			    trav->xlator->fops->setdents,
-			    fd, flags, entries, count);
-		trav = trav->next;
-	}
+stripe_setdents (call_frame_t *frame, xlator_t *this, fd_t *fd,
+                 int32_t flags, dir_entry_t *entries, int32_t count)
+{
+        stripe_local_t   *local = NULL;
+        stripe_private_t *priv = NULL;
+        xlator_list_t    *trav = NULL;
+        int32_t           op_errno = 1;
+
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (fd, err);
+        VALIDATE_OR_GOTO (fd->inode, err);
+
+        priv = this->private;
+        trav = this->children;
+
+        /* Initialization */
+        local = CALLOC (1, sizeof (stripe_local_t));
+        if (!local) {
+                op_errno = ENOMEM;
+                goto err;
+        }
+        local->op_ret = -1;
+        frame->local = local;
+        local->call_count = priv->child_count;
+
+        while (trav) {
+                STACK_WIND (frame, stripe_stack_unwind_cbk, trav->xlator,
+                            trav->xlator->fops->setdents, fd, flags, entries, 
+                            count);
+                trav = trav->next;
+        }
 
-	return 0;
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno);
+        return 0;
 }
 
 
@@ -2306,44 +2264,45 @@ stripe_setdents (call_frame_t *frame,
  * stripe_flush - 
  */
 int32_t
-stripe_flush (call_frame_t *frame,
-	      xlator_t *this,
-	      fd_t *fd)
+stripe_flush (call_frame_t *frame, xlator_t *this, fd_t *fd)
 {
-	stripe_local_t *local = NULL;
-	stripe_private_t *priv = this->private;
-	xlator_list_t *trav = this->children;
-
-	STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (fd);
+        stripe_local_t   *local = NULL;
+        stripe_private_t *priv = NULL;
+        xlator_list_t    *trav = NULL;
+        int32_t           op_errno = 1;
 
-	/* Initialization */
-	local = CALLOC (1, sizeof (stripe_local_t));
-	ERR_ABORT (local);
-	local->op_ret = -1;
-	frame->local = local;
-	local->call_count = priv->child_count;
-	
-	while (trav) {
-		STACK_WIND (frame,	      
-			    stripe_stack_unwind_cbk,
-			    trav->xlator,
-			    trav->xlator->fops->flush,
-			    fd);
-		trav = trav->next;
-	}
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (fd, err);
+        VALIDATE_OR_GOTO (fd->inode, err);
 
-	return 0;
-}
+        priv = this->private;
+        trav = this->children;
 
+        if (priv->first_child_down) {
+                op_errno = ENOTCONN;
+                goto err;
+        }
+        /* Initialization */
+        local = CALLOC (1, sizeof (stripe_local_t));
+        if (!local) {
+                op_errno = ENOMEM;
+                goto err;
+        }
+        local->op_ret = -1;
+        frame->local = local;
+        local->call_count = priv->child_count;
+        
+        while (trav) {
+                STACK_WIND (frame, stripe_stack_unwind_cbk,  trav->xlator,
+                            trav->xlator->fops->flush, fd);
+                trav = trav->next;
+        }
 
-/**
- * stripe_close - 
- */
-int32_t
-stripe_release (xlator_t *this,
-		fd_t *fd)
-{
-	return 0;
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno);
+        return 0;
 }
 
 
@@ -2351,34 +2310,41 @@ stripe_release (xlator_t *this,
  * stripe_fsync - 
  */
 int32_t
-stripe_fsync (call_frame_t *frame,
-	      xlator_t *this,
-	      fd_t *fd,
-	      int32_t flags)
-{
-	stripe_local_t *local = NULL;
-	stripe_private_t *priv = this->private;
-	xlator_list_t *trav = this->children;
-
-	STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (fd);
-
-	/* Initialization */
-	local = CALLOC (1, sizeof (stripe_local_t));
-	ERR_ABORT (local);
-	local->op_ret = -1;
-	frame->local = local;
-	local->call_count = priv->child_count;
-	
-	while (trav) {
-		STACK_WIND (frame,	      
-			    stripe_stack_unwind_cbk,
-			    trav->xlator,
-			    trav->xlator->fops->fsync,
-			    fd, flags);
-		trav = trav->next;
-	}
+stripe_fsync (call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t flags)
+{
+        stripe_local_t   *local = NULL;
+        stripe_private_t *priv = NULL;
+        xlator_list_t    *trav = NULL;
+        int32_t           op_errno = 1;
+
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (fd, err);
+        VALIDATE_OR_GOTO (fd->inode, err);
+
+        priv = this->private;
+        trav = this->children;
+
+        /* Initialization */
+        local = CALLOC (1, sizeof (stripe_local_t));
+        if (!local) {
+                op_errno = ENOMEM;
+                goto err;
+        }
+        local->op_ret = -1;
+        frame->local = local;
+        local->call_count = priv->child_count;
+        
+        while (trav) {
+                STACK_WIND (frame, stripe_stack_unwind_cbk, trav->xlator,
+                            trav->xlator->fops->fsync, fd, flags);
+                trav = trav->next;
+        }
 
-	return 0;
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno);
+        return 0;
 }
 
 
@@ -2387,33 +2353,43 @@ stripe_fsync (call_frame_t *frame,
  */
 int32_t
 stripe_fstat (call_frame_t *frame,
-	      xlator_t *this,
-	      fd_t *fd)
-{
-	stripe_local_t *local = NULL;
-	stripe_private_t *priv = this->private;
-	xlator_list_t *trav = this->children;
-
-	STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (fd);
-
-	/* Initialization */
-	local = CALLOC (1, sizeof (stripe_local_t));
-	ERR_ABORT (local);
-	local->op_ret = -1;
-	frame->local = local;
-	local->inode = fd->inode;
-	local->call_count = priv->child_count;
-	
-	while (trav) {
-		STACK_WIND (frame,	      
-			    stripe_stack_unwind_buf_cbk,
-			    trav->xlator,
-			    trav->xlator->fops->fstat,
-			    fd);
-		trav = trav->next;
-	}
+              xlator_t *this,
+              fd_t *fd)
+{
+        stripe_local_t   *local = NULL;
+        stripe_private_t *priv = NULL;
+        xlator_list_t    *trav = NULL;
+        int32_t           op_errno = 1;
+
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (fd, err);
+        VALIDATE_OR_GOTO (fd->inode, err);
+
+        priv = this->private;
+        trav = this->children;
+
+        /* Initialization */
+        local = CALLOC (1, sizeof (stripe_local_t));
+        if (!local) {
+                op_errno = ENOMEM;
+                goto err;
+        }
+        local->op_ret = -1;
+        frame->local = local;
+        local->inode = fd->inode;
+        local->call_count = priv->child_count;
+        
+        while (trav) {
+                STACK_WIND (frame, stripe_stack_unwind_buf_cbk, trav->xlator,
+                            trav->xlator->fops->fstat, fd);
+                trav = trav->next;
+        }
 
-	return 0;
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno, NULL);
+        return 0;
 }
 
 
@@ -2421,35 +2397,42 @@ stripe_fstat (call_frame_t *frame,
  * stripe_fchmod - 
  */
 int32_t 
-stripe_fchmod (call_frame_t *frame,
-	       xlator_t *this,
-	       fd_t *fd,
-	       mode_t mode)
-{
-	stripe_local_t *local = NULL;
-	stripe_private_t *priv = this->private;
-	xlator_list_t *trav = this->children;
-
-	STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (fd);
-
-	/* Initialization */
-	local = CALLOC (1, sizeof (stripe_local_t));
-	ERR_ABORT (local);
-	local->op_ret = -1;
-	frame->local = local;
-	local->inode = fd->inode;
-	local->call_count = priv->child_count;
-	
-	while (trav) {
-		STACK_WIND (frame,	      
-			    stripe_stack_unwind_buf_cbk,
-			    trav->xlator,
-			    trav->xlator->fops->fchmod,
-			    fd, mode);
-		trav = trav->next;
-	}
-
-	return 0;
+stripe_fchmod (call_frame_t *frame, xlator_t *this, fd_t *fd, mode_t mode)
+{
+        stripe_local_t   *local = NULL;
+        stripe_private_t *priv = NULL;
+        xlator_list_t    *trav = NULL;
+        int32_t           op_errno = 1;
+
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (fd, err);
+        VALIDATE_OR_GOTO (fd->inode, err);
+
+        priv = this->private;
+        trav = this->children;
+
+        /* Initialization */
+        local = CALLOC (1, sizeof (stripe_local_t));
+        if (!local) {
+                op_errno = ENOMEM;
+                goto err;
+        }
+        local->op_ret = -1;
+        frame->local = local;
+        local->inode = fd->inode;
+        local->call_count = priv->child_count;
+        
+        while (trav) {
+                STACK_WIND (frame, stripe_stack_unwind_buf_cbk, trav->xlator,
+                            trav->xlator->fops->fchmod, fd, mode);
+                trav = trav->next;
+        }
+
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno, NULL);
+        return 0;
 }
 
 
@@ -2457,36 +2440,43 @@ stripe_fchmod (call_frame_t *frame,
  * stripe_fchown - 
  */
 int32_t 
-stripe_fchown (call_frame_t *frame,
-	       xlator_t *this,
-	       fd_t *fd,
-	       uid_t uid,
-	       gid_t gid)
-{
-	stripe_local_t *local = NULL;
-	stripe_private_t *priv = this->private;
-	xlator_list_t *trav = this->children;
-
-	STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (fd);
-
-	/* Initialization */
-	local = CALLOC (1, sizeof (stripe_local_t));
-	ERR_ABORT (local);
-	local->op_ret = -1;
-	frame->local = local;
-	local->inode = fd->inode;
-	local->call_count = priv->child_count;
-	
-	while (trav) {
-		STACK_WIND (frame,	      
-			    stripe_stack_unwind_buf_cbk,
-			    trav->xlator,
-			    trav->xlator->fops->fchown,
-			    fd, uid, gid);
-		trav = trav->next;
-	}
-
-	return 0;
+stripe_fchown (call_frame_t *frame, xlator_t *this, fd_t *fd, uid_t uid,
+               gid_t gid)
+{
+        stripe_local_t   *local = NULL;
+        stripe_private_t *priv = NULL;
+        xlator_list_t    *trav = NULL;
+        int32_t           op_errno = 1;
+
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (fd, err);
+        VALIDATE_OR_GOTO (fd->inode, err);
+
+        priv = this->private;
+        trav = this->children;
+
+        /* Initialization */
+        local = CALLOC (1, sizeof (stripe_local_t));
+        if (!local) {
+                op_errno = ENOMEM;
+                goto err;
+        }
+        local->op_ret = -1;
+        frame->local = local;
+        local->inode = fd->inode;
+        local->call_count = priv->child_count;
+        
+        while (trav) {
+                STACK_WIND (frame, stripe_stack_unwind_buf_cbk, trav->xlator,
+                            trav->xlator->fops->fchown, fd, uid, gid);
+                trav = trav->next;
+        }
+
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno, NULL);
+        return 0;
 }
 
 
@@ -2494,46 +2484,42 @@ stripe_fchown (call_frame_t *frame,
  * stripe_ftruncate - 
  */
 int32_t
-stripe_ftruncate (call_frame_t *frame,
-		  xlator_t *this,
-		  fd_t *fd,
-		  off_t offset)
-{
-	stripe_local_t *local = NULL;
-	stripe_private_t *priv = this->private;
-	xlator_list_t *trav = this->children;
-
-	STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (fd);
-
-	/* Initialization */
-	local = CALLOC (1, sizeof (stripe_local_t));
-	ERR_ABORT (local);
-	local->op_ret = -1;
-	frame->local = local;
-	local->inode = fd->inode;
-	local->call_count = priv->child_count;
-	
-	while (trav) {
-		STACK_WIND (frame,	      
-			    stripe_stack_unwind_buf_cbk,
-			    trav->xlator,
-			    trav->xlator->fops->ftruncate,
-			    fd, offset);
-		trav = trav->next;
-	}
-
-	return 0;
-}
-
+stripe_ftruncate (call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset)
+{
+        stripe_local_t   *local = NULL;
+        stripe_private_t *priv = NULL;
+        xlator_list_t    *trav = NULL;
+        int32_t           op_errno = 1;
+
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (fd, err);
+        VALIDATE_OR_GOTO (fd->inode, err);
+
+        priv = this->private;
+        trav = this->children;
+
+        /* Initialization */
+        local = CALLOC (1, sizeof (stripe_local_t));
+        if (!local) {
+                op_errno = ENOMEM;
+                goto err;
+        }
+        local->op_ret = -1;
+        frame->local = local;
+        local->inode = fd->inode;
+        local->call_count = priv->child_count;
+        
+        while (trav) {
+                STACK_WIND (frame, stripe_stack_unwind_buf_cbk, trav->xlator,
+                            trav->xlator->fops->ftruncate, fd, offset);
+                trav = trav->next;
+        }
 
-/**
- * stripe_releasedir - 
- */
-int32_t
-stripe_releasedir (xlator_t *this,
-		   fd_t *fd)
-{
-	return 0;
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno, NULL);
+        return 0;
 }
 
 
@@ -2541,35 +2527,41 @@ stripe_releasedir (xlator_t *this,
  * stripe_fsyncdir - 
  */
 int32_t
-stripe_fsyncdir (call_frame_t *frame,
-		 xlator_t *this,
-		 fd_t *fd,
-		 int32_t flags)
-{
-	stripe_local_t *local = NULL;
-	stripe_private_t *priv = this->private;
-	xlator_list_t *trav = this->children;
-
-	STRIPE_CHECK_INODE_CTX_AND_UNWIND_ON_ERR (fd);
-
-	/* Initialization */
-	local = CALLOC (1, sizeof (stripe_local_t));
-	ERR_ABORT (local);
-	local->op_ret = -1;
-	frame->local = local;
-	local->call_count = priv->child_count;
-
-	while (trav) {
-		STACK_WIND (frame,	      
-			    stripe_stack_unwind_cbk,
-			    trav->xlator,
-			    trav->xlator->fops->fsyncdir,
-			    fd,
-			    flags);
-		trav = trav->next;
-	}
+stripe_fsyncdir (call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t flags)
+{
+        stripe_local_t   *local = NULL;
+        stripe_private_t *priv = NULL;
+        xlator_list_t    *trav = NULL;
+        int32_t           op_errno = 1;
+
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (fd, err);
+        VALIDATE_OR_GOTO (fd->inode, err);
+
+        priv = this->private;
+        trav = this->children;
+
+        /* Initialization */
+        local = CALLOC (1, sizeof (stripe_local_t));
+        if (!local) {
+                op_errno = ENOMEM;
+                goto err;
+        }
+        local->op_ret = -1;
+        frame->local = local;
+        local->call_count = priv->child_count;
+
+        while (trav) {
+                STACK_WIND (frame, stripe_stack_unwind_cbk, trav->xlator,
+                            trav->xlator->fops->fsyncdir, fd, flags);
+                trav = trav->next;
+        }
 
-	return 0;
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno, NULL);
+        return 0;
 }
 
 
@@ -2578,18 +2570,13 @@ stripe_fsyncdir (call_frame_t *frame,
  *     file name doesn't match the pattern specified for striping.
  */
 int32_t
-stripe_single_readv_cbk (call_frame_t *frame,
-			 void *cookie,
-			 xlator_t *this,
-			 int32_t op_ret,
-			 int32_t op_errno,
-			 struct iovec *vector,
-			 int32_t count,
-			 struct stat *stbuf,
-                         struct iobref *iobref)
+stripe_single_readv_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                         int32_t op_ret, int32_t op_errno, 
+                         struct iovec *vector, int32_t count,
+                         struct stat *stbuf, struct iobref *iobref)
 {
-	STACK_UNWIND (frame, op_ret, op_errno, vector, count, stbuf, iobref);
-	return 0;
+        STACK_UNWIND (frame, op_ret, op_errno, vector, count, stbuf, iobref);
+        return 0;
 }
 
 /**
@@ -2597,184 +2584,195 @@ stripe_single_readv_cbk (call_frame_t *frame,
  *        to above layer after putting it in a single vector.
  */
 int32_t
-stripe_readv_cbk (call_frame_t *frame,
-		  void *cookie,
-		  xlator_t *this,
-		  int32_t op_ret,
-		  int32_t op_errno,
-		  struct iovec *vector,
-		  int32_t count,
-		  struct stat *stbuf,
-                  struct iobref *iobref)
-{
-	int32_t index = 0;
-	int32_t callcnt = 0;
-	call_frame_t *main_frame = NULL;
-	stripe_local_t *main_local = NULL;
-	stripe_local_t *local = frame->local;
-
-	index = local->node_index;
-	main_frame = local->orig_frame;
-	main_local = main_frame->local;
-
-	LOCK (&main_frame->lock);
-	{
-		main_local->replies[index].op_ret = op_ret;
-		main_local->replies[index].op_errno = op_errno;
-		if (op_ret >= 0) {
-			main_local->replies[index].stbuf  = *stbuf;
-			main_local->replies[index].count  = count;
-			main_local->replies[index].vector = 
-				iov_dup (vector, count);
+stripe_readv_cbk (call_frame_t *frame, void *cookie, xlator_t *this, 
+                  int32_t op_ret, int32_t op_errno, struct iovec *vector,
+                  int32_t count, struct stat *stbuf, struct iobref *iobref)
+{
+        int32_t         index = 0;
+        int32_t         callcnt = 0;
+        call_frame_t   *main_frame = NULL;
+        stripe_local_t *main_local = NULL;
+        stripe_local_t *local = frame->local;
+
+        index = local->node_index;
+        main_frame = local->orig_frame;
+        main_local = main_frame->local;
+
+        LOCK (&main_frame->lock);
+        {
+                main_local->replies[index].op_ret = op_ret;
+                main_local->replies[index].op_errno = op_errno;
+                if (op_ret >= 0) {
+                        main_local->replies[index].stbuf  = *stbuf;
+                        main_local->replies[index].count  = count;
+                        main_local->replies[index].vector = 
+                                iov_dup (vector, count);
 
                         if (!main_local->iobref)
                                 main_local->iobref = iobref_new ();
                         iobref_merge (main_local->iobref, iobref);
-		}
-		callcnt = ++main_local->call_count;
-	}
-	UNLOCK(&main_frame->lock);
-
-	if (callcnt == main_local->wind_count) {
-		int32_t final_count = 0;
-		struct iovec *final_vec = NULL;
-		struct stat tmp_stbuf = {0,};
-		struct iobref *iobref = NULL;
-
-		op_ret = 0;
-		memcpy (&tmp_stbuf, &main_local->replies[0].stbuf, 
-			sizeof (struct stat));
-		for (index=0; index < main_local->wind_count; index++) {
-			/* TODO: check whether each stripe returned 'expected'
-			 * number of bytes 
-			 */
-			if (main_local->replies[index].op_ret == -1) {
-				op_ret = -1;
-				op_errno = main_local->replies[index].op_errno;
-				break;
-			}
-			op_ret += main_local->replies[index].op_ret;
-			final_count += main_local->replies[index].count;
-			/* TODO: Do I need to send anything more in stbuf? */
-			if (tmp_stbuf.st_size < 
-			    main_local->replies[index].stbuf.st_size) {
-				tmp_stbuf.st_size = 
-					main_local->replies[index].stbuf.st_size;
-			}
-		}
-		if (op_ret != -1) {
-			final_vec = CALLOC (final_count, 
-					    sizeof (struct iovec));
-			ERR_ABORT (final_vec);
-			final_count = 0;
-
-			for (index=0; 
-			     index < main_local->wind_count; index++) {
-				memcpy (final_vec + final_count,
-					main_local->replies[index].vector,
-					(main_local->replies[index].count * 
-					 sizeof (struct iovec)));
-				final_count += 
-					main_local->replies[index].count;
-
-				free (main_local->replies[index].vector);
-			}
-		} else {
-			final_vec = NULL;
-			final_count = 0;
-		}
-		/* */
-		FREE (main_local->replies);
+                }
+                callcnt = ++main_local->call_count;
+        }
+        UNLOCK(&main_frame->lock);
+
+        if (callcnt == main_local->wind_count) {
+                int32_t        final_count = 0;
+                struct iovec  *final_vec = NULL;
+                struct stat    tmp_stbuf = {0,};
+                struct iobref *iobref = NULL;
+
+                op_ret = 0;
+                memcpy (&tmp_stbuf, &main_local->replies[0].stbuf, 
+                        sizeof (struct stat));
+                for (index=0; index < main_local->wind_count; index++) {
+                        /* TODO: check whether each stripe returned 'expected'
+                         * number of bytes 
+                         */
+                        if (main_local->replies[index].op_ret == -1) {
+                                op_ret = -1;
+                                op_errno = main_local->replies[index].op_errno;
+                                break;
+                        }
+                        op_ret += main_local->replies[index].op_ret;
+                        final_count += main_local->replies[index].count;
+                        /* TODO: Do I need to send anything more in stbuf? */
+                        if (tmp_stbuf.st_size < 
+                            main_local->replies[index].stbuf.st_size) {
+                                tmp_stbuf.st_size = 
+                                        main_local->replies[index].stbuf.st_size;
+                        }
+                }
+                if (op_ret != -1) {
+                        final_vec = CALLOC (final_count, 
+                                            sizeof (struct iovec));
+                        if (!final_vec) {
+                                op_ret = -1;
+                                final_count = 0;
+                                goto done;
+                        }
+
+                        final_count = 0;
+
+                        for (index=0; 
+                             index < main_local->wind_count; index++) {
+                                memcpy (final_vec + final_count,
+                                        main_local->replies[index].vector,
+                                        (main_local->replies[index].count * 
+                                         sizeof (struct iovec)));
+                                final_count += 
+                                        main_local->replies[index].count;
+
+                                free (main_local->replies[index].vector);
+                        }
+                } else {
+                        final_vec = NULL;
+                        final_count = 0;
+                }
+
+        done:
+                /* */
+                FREE (main_local->replies);
                 iobref = main_local->iobref;
-		STACK_UNWIND (main_frame, op_ret, op_errno, 
-			      final_vec, final_count, &tmp_stbuf, iobref);
+                STACK_UNWIND (main_frame, op_ret, op_errno, 
+                              final_vec, final_count, &tmp_stbuf, iobref);
 
-		iobref_unref (iobref);
-		if (final_vec)
-			free (final_vec);
-	}
+                iobref_unref (iobref);
+                if (final_vec)
+                        FREE (final_vec);
+        }
 
-	STACK_DESTROY (frame->root);
-	return 0;
+        STACK_DESTROY (frame->root);
+        return 0;
 }
 
 /**
  * stripe_readv - 
  */
 int32_t
-stripe_readv (call_frame_t *frame,
-	      xlator_t *this,
-	      fd_t *fd,
-	      size_t size,
-	      off_t offset)
-{
-	int32_t index = 0;
-	int32_t num_stripe = 0;
-	size_t frame_size = 0;
-	off_t rounded_end = 0;
-	uint64_t stripe_size = 0;
-	off_t rounded_start = 0;
-	off_t frame_offset = offset;
-	stripe_local_t *local = NULL;
-	call_frame_t *rframe = NULL;
-	stripe_local_t *rlocal = NULL;
-	xlator_list_t *trav = this->children;
-	stripe_private_t *priv = this->private;
-
-	fd_ctx_get (fd, this, &stripe_size);
-	if (!stripe_size) {
-		STACK_UNWIND (frame, -1, EINVAL, NULL, 0, NULL);
-		return 0;
-	}
-
-	/* The file is stripe across the child nodes. Send the read request 
-	 * to the child nodes appropriately after checking which region of 
-	 * the file is in which child node. Always '0-<stripe_size>' part of
-	 * the file resides in the first child.
-	 */
-	rounded_start = floor (offset, stripe_size);
-	rounded_end = roof (offset+size, stripe_size);
-	num_stripe = (rounded_end - rounded_start) / stripe_size;
-	
-	local = CALLOC (1, sizeof (stripe_local_t));
-	ERR_ABORT (local);
-	local->wind_count = num_stripe;
-	frame->local = local;
-	
-	/* This is where all the vectors should be copied. */
-	local->replies = CALLOC (1, num_stripe * 
-				 sizeof (struct readv_replies));
-	ERR_ABORT (local->replies);
-	
-	for (index = 0;
-	     index < ((offset / stripe_size) % priv->child_count);
-	     index++) {
-		trav = trav->next;
-	}
+stripe_readv (call_frame_t *frame, xlator_t *this, fd_t *fd,
+              size_t size, off_t offset)
+{
+        int32_t           op_errno = 1;
+        int32_t           index = 0;
+        int32_t           num_stripe = 0;
+        size_t            frame_size = 0;
+        off_t             rounded_end = 0;
+        uint64_t          stripe_size = 0;
+        off_t             rounded_start = 0;
+        off_t             frame_offset = offset;
+        stripe_local_t   *local = NULL;
+        call_frame_t     *rframe = NULL;
+        stripe_local_t   *rlocal = NULL;
+        xlator_list_t    *trav = NULL;
+        stripe_private_t *priv = NULL;
+
+        trav = this->children;
+        priv = this->private;
+
+        fd_ctx_get (fd, this, &stripe_size);
+        if (!stripe_size) {
+                op_errno = EBADFD;
+                goto err;
+        }
+
+        /* The file is stripe across the child nodes. Send the read request 
+         * to the child nodes appropriately after checking which region of 
+         * the file is in which child node. Always '0-<stripe_size>' part of
+         * the file resides in the first child.
+         */
+        rounded_start = floor (offset, stripe_size);
+        rounded_end = roof (offset+size, stripe_size);
+        num_stripe = (rounded_end - rounded_start) / stripe_size;
+        
+        local = CALLOC (1, sizeof (stripe_local_t));
+        if (!local) {
+                op_errno = ENOMEM;
+                goto err;
+        }
+        local->wind_count = num_stripe;
+        frame->local = local;
+        
+        /* This is where all the vectors should be copied. */
+        local->replies = CALLOC (num_stripe, sizeof (struct readv_replies));
+        if (!local->replies) {
+                op_errno = ENOMEM;
+                goto err;
+        }
+        
+        for (index = 0;
+             index < ((offset / stripe_size) % priv->child_count);
+             index++) {
+                trav = trav->next;
+        }
     
-	for (index = 0; index < num_stripe; index++) {
-		rframe = copy_frame (frame);
-		rlocal = CALLOC (1, sizeof (stripe_local_t));
-		ERR_ABORT (rlocal);
-		
-		frame_size = min (roof (frame_offset+1, stripe_size),
-				  (offset + size)) - frame_offset;
-		
-		rlocal->node_index = index;
-		rlocal->orig_frame = frame;
-		rframe->local = rlocal;
-		STACK_WIND (rframe,
-			    stripe_readv_cbk,
-			    trav->xlator,
-			    trav->xlator->fops->readv,
-			    fd, frame_size, frame_offset);
+        for (index = 0; index < num_stripe; index++) {
+                rframe = copy_frame (frame);
+                rlocal = CALLOC (1, sizeof (stripe_local_t));
+                if (!rlocal) {
+                        op_errno = ENOMEM;
+                        goto err;
+                }
+                
+                frame_size = min (roof (frame_offset+1, stripe_size),
+                                  (offset + size)) - frame_offset;
+                
+                rlocal->node_index = index;
+                rlocal->orig_frame = frame;
+                rframe->local = rlocal;
+                STACK_WIND (rframe, stripe_readv_cbk, trav->xlator,
+                            trav->xlator->fops->readv,
+                            fd, frame_size, frame_offset);
       
-		frame_offset += frame_size;
+                frame_offset += frame_size;
 
-		trav = trav->next ? trav->next : this->children;
-	}
+                trav = trav->next ? trav->next : this->children;
+        }
 
-	return 0;
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno, NULL);
+        return 0;
 }
 
 
@@ -2782,39 +2780,38 @@ stripe_readv (call_frame_t *frame,
  * stripe_writev_cbk - 
  */
 int32_t
-stripe_writev_cbk (call_frame_t *frame,
-		   void *cookie,
-		   xlator_t *this,
-		   int32_t op_ret,
-		   int32_t op_errno,
-		   struct stat *stbuf)
-{
-	int32_t callcnt = 0;
-	stripe_local_t *local = frame->local;
-	LOCK(&frame->lock);
-	{
-		callcnt = ++local->call_count;
+stripe_writev_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                   int32_t op_ret, int32_t op_errno, struct stat *stbuf)
+{
+        int32_t         callcnt = 0;
+        stripe_local_t *local = NULL;
+
+        local = frame->local;
+
+        LOCK(&frame->lock);
+        {
+                callcnt = ++local->call_count;
     
-		if (op_ret == -1) {
-			gf_log (this->name, GF_LOG_WARNING, 
-				"%s returned error %s",
-				((call_frame_t *)cookie)->this->name, 
-				strerror (op_errno));
-			local->op_errno = op_errno;
-			local->op_ret = -1;
-		}
-		if (op_ret >= 0) {
-			local->op_ret += op_ret;
-			local->stbuf = *stbuf;
-		}
-	}
-	UNLOCK (&frame->lock);
-
-	if ((callcnt == local->wind_count) && local->unwind) {
-		STACK_UNWIND (frame, local->op_ret, 
-			      local->op_errno, &local->stbuf);
-	}
-	return 0;
+                if (op_ret == -1) {
+                        gf_log (this->name, GF_LOG_DEBUG, 
+                                "%s returned error %s",
+                                ((call_frame_t *)cookie)->this->name, 
+                                strerror (op_errno));
+                        local->op_errno = op_errno;
+                        local->op_ret = -1;
+                }
+                if (op_ret >= 0) {
+                        local->op_ret += op_ret;
+                        local->stbuf = *stbuf;
+                }
+        }
+        UNLOCK (&frame->lock);
+
+        if ((callcnt == local->wind_count) && local->unwind) {
+                STACK_UNWIND (frame, local->op_ret, 
+                              local->op_errno, &local->stbuf);
+        }
+        return 0;
 }
 
 
@@ -2822,99 +2819,100 @@ stripe_writev_cbk (call_frame_t *frame,
  * stripe_single_writev_cbk - 
  */
 int32_t
-stripe_single_writev_cbk (call_frame_t *frame,
-			  void *cookie,
-			  xlator_t *this,
-			  int32_t op_ret,
-			  int32_t op_errno,
-			  struct stat *stbuf)
+stripe_single_writev_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                          int32_t op_ret, int32_t op_errno, struct stat *stbuf)
 {
-	STACK_UNWIND (frame, op_ret, op_errno, stbuf);
-	return 0;
+        STACK_UNWIND (frame, op_ret, op_errno, stbuf);
+        return 0;
 }
 /**
  * stripe_writev - 
  */
 int32_t
-stripe_writev (call_frame_t *frame,
-	       xlator_t *this,
-	       fd_t *fd,
-	       struct iovec *vector,
-	       int32_t count,
-	       off_t offset,
+stripe_writev (call_frame_t *frame, xlator_t *this, fd_t *fd,
+               struct iovec *vector, int32_t count, off_t offset,
                struct iobref *iobref)
 {
-	int32_t idx = 0;
-	int32_t total_size = 0;
-	int32_t offset_offset = 0;
-	int32_t remaining_size = 0;
-	int32_t tmp_count = count;
-	off_t fill_size = 0;
-	uint64_t stripe_size = 0;
-	struct iovec *tmp_vec = vector;
-	stripe_private_t *priv = this->private;
-	stripe_local_t *local = NULL;
-	xlator_list_t *trav = NULL;
-
-	fd_ctx_get (fd, this, &stripe_size);
-	if (!stripe_size) {
-		STACK_UNWIND (frame, -1, EINVAL, NULL);
-		return 0;
-	}
-
-	/* File has to be stripped across the child nodes */
-	for (idx = 0; idx< count; idx ++) {
-		total_size += tmp_vec[idx].iov_len;
-	}
-	remaining_size = total_size;
-
-	local = CALLOC (1, sizeof (stripe_local_t));
-	ERR_ABORT (local);
-	frame->local = local;
-	local->stripe_size = stripe_size;
-
-	while (1) {
-		/* Send striped chunk of the vector to child 
-		   nodes appropriately. */
-		trav = this->children;
-		
-		idx = (((offset + offset_offset) / 
-			local->stripe_size) % priv->child_count);
-		while (idx) {
-			trav = trav->next;
-			idx--;
-		}
-		fill_size = (local->stripe_size - 
-			     ((offset + offset_offset) % local->stripe_size));
-		if (fill_size > remaining_size)
-			fill_size = remaining_size;
-
-		remaining_size -= fill_size;
-
-		tmp_count = iov_subset (vector, count, offset_offset,
-					offset_offset + fill_size, NULL);
-		tmp_vec = CALLOC (tmp_count, sizeof (struct iovec));
-		ERR_ABORT (tmp_vec);
-		tmp_count = iov_subset (vector, count, offset_offset,
-					offset_offset + fill_size, tmp_vec);
-		
-		local->wind_count++;
-		if (remaining_size == 0)
-			local->unwind = 1;
-
-		STACK_WIND(frame,
-			   stripe_writev_cbk,
-			   trav->xlator,
-			   trav->xlator->fops->writev,
-			   fd, tmp_vec, tmp_count, offset + offset_offset,
-                           iobref);
-		FREE (tmp_vec);
-		offset_offset += fill_size;
-		if (remaining_size == 0)
-			break;
-	}
-
-	return 0;
+        struct iovec     *tmp_vec = vector;
+        stripe_private_t *priv = NULL;
+        stripe_local_t   *local = NULL;
+        xlator_list_t    *trav = NULL;
+        int32_t           op_errno = 1;
+        int32_t           idx = 0;
+        int32_t           total_size = 0;
+        int32_t           offset_offset = 0;
+        int32_t           remaining_size = 0;
+        int32_t           tmp_count = count;
+        off_t             fill_size = 0;
+        uint64_t          stripe_size = 0;
+
+        priv = this->private;
+
+        fd_ctx_get (fd, this, &stripe_size);
+        if (!stripe_size) {
+                op_errno = EINVAL;
+                goto err;
+        }
+
+        /* File has to be stripped across the child nodes */
+        for (idx = 0; idx< count; idx ++) {
+                total_size += tmp_vec[idx].iov_len;
+        }
+        remaining_size = total_size;
+
+        local = CALLOC (1, sizeof (stripe_local_t));
+        if (!local) {
+                op_errno = ENOMEM;
+                goto err;
+        }
+        frame->local = local;
+        local->stripe_size = stripe_size;
+
+        while (1) {
+                /* Send striped chunk of the vector to child 
+                   nodes appropriately. */
+                trav = this->children;
+                
+                idx = (((offset + offset_offset) / 
+                        local->stripe_size) % priv->child_count);
+                while (idx) {
+                        trav = trav->next;
+                        idx--;
+                }
+                fill_size = (local->stripe_size - 
+                             ((offset + offset_offset) % local->stripe_size));
+                if (fill_size > remaining_size)
+                        fill_size = remaining_size;
+
+                remaining_size -= fill_size;
+
+                tmp_count = iov_subset (vector, count, offset_offset,
+                                        offset_offset + fill_size, NULL);
+                tmp_vec = CALLOC (tmp_count, sizeof (struct iovec));
+                if (!tmp_vec) {
+                        op_errno = ENOMEM;
+                        goto err;
+                }
+                tmp_count = iov_subset (vector, count, offset_offset,
+                                        offset_offset + fill_size, tmp_vec);
+                
+                local->wind_count++;
+                if (remaining_size == 0)
+                        local->unwind = 1;
+
+                STACK_WIND(frame, stripe_writev_cbk, trav->xlator,
+                           trav->xlator->fops->writev, fd, tmp_vec, 
+                           tmp_count, offset + offset_offset, iobref);
+                FREE (tmp_vec);
+                offset_offset += fill_size;
+                if (remaining_size == 0)
+                        break;
+        }
+
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno, NULL);
+        return 0;
 }
 
 
@@ -2927,157 +2925,160 @@ stripe_writev (call_frame_t *frame,
  * 
  */
 int32_t
-stripe_stats_cbk (call_frame_t *frame,
-		  void *cookie,
-		  xlator_t *this,
-		  int32_t op_ret,
-		  int32_t op_errno,
-		  struct xlator_stats *stats)
-{
-	int32_t callcnt = 0;
-	stripe_local_t *local = frame->local;
-
-	LOCK(&frame->lock);
-	{
-		callcnt = --local->call_count;
+stripe_stats_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+                  int32_t op_ret, int32_t op_errno, struct xlator_stats *stats)
+{
+        int32_t         callcnt = 0;
+        stripe_local_t *local = NULL;
+
+        local = frame->local;
+
+        LOCK(&frame->lock);
+        {
+                callcnt = --local->call_count;
     
-		if (op_ret == -1) {
-			gf_log (this->name, GF_LOG_WARNING, 
-				"%s returned error %s",
-				((call_frame_t *)cookie)->this->name, 
-				strerror (op_errno));
-			local->op_ret = -1;
-			local->op_errno = op_errno;
-		}
-		if (op_ret == 0) {
-			if (local->op_ret == -2) {
-				/* This is to make sure this is the 
-				   first time */
-				local->stats = *stats;
-				local->op_ret = 0;
-			} else {
-				local->stats.nr_files += stats->nr_files;
-				local->stats.free_disk += stats->free_disk;
-				local->stats.disk_usage += stats->disk_usage;
-				local->stats.nr_clients += stats->nr_clients;
-			}
-		}
-	}
-	UNLOCK (&frame->lock);
-
-	if (!callcnt) {
-		STACK_UNWIND (frame, local->op_ret, local->op_errno,
-			      &local->stats);
-	}
-
-	return 0;
+                if (op_ret == -1) {
+                        gf_log (this->name, GF_LOG_DEBUG,
+                                "%s returned error %s",
+                                ((call_frame_t *)cookie)->this->name, 
+                                strerror (op_errno));
+                        local->op_ret = -1;
+                        local->op_errno = op_errno;
+                }
+                if (op_ret == 0) {
+                        if (local->op_ret == -2) {
+                                /* This is to make sure this is the 
+                                   first time */
+                                local->stats = *stats;
+                                local->op_ret = 0;
+                        } else {
+                                local->stats.nr_files += stats->nr_files;
+                                local->stats.free_disk += stats->free_disk;
+                                local->stats.disk_usage += stats->disk_usage;
+                                local->stats.nr_clients += stats->nr_clients;
+                        }
+                }
+        }
+        UNLOCK (&frame->lock);
+
+        if (!callcnt) {
+                STACK_UNWIND (frame, local->op_ret, local->op_errno,
+                              &local->stats);
+        }
+
+        return 0;
 }
 
 /**
  * stripe_stats - 
  */
 int32_t
-stripe_stats (call_frame_t *frame,
-	      xlator_t *this,
-	      int32_t flags)
-{
-	stripe_local_t *local = NULL;
-	xlator_list_t *trav = this->children;
-
-	local = CALLOC (1, sizeof (stripe_local_t));
-	ERR_ABORT (local);
-	frame->local = local;
-	local->op_ret = -2; /* to be used as a flag in _cbk */
-	local->call_count = ((stripe_private_t*)this->private)->child_count;
-	while (trav) {
-		STACK_WIND (frame,
-			    stripe_stats_cbk,
-			    trav->xlator,
-			    trav->xlator->mops->stats,
-			    flags);
-		trav = trav->next;
-	}
-	return 0;
+stripe_stats (call_frame_t *frame, xlator_t *this, int32_t flags)
+{
+        stripe_local_t   *local = NULL;
+        xlator_list_t    *trav = NULL;
+        stripe_private_t *priv = NULL;
+        int32_t           op_errno = 1;
+
+        priv = this->private;
+        trav = this->children;
+
+        local = CALLOC (1, sizeof (stripe_local_t));
+        if (!local) {
+                op_errno = ENOMEM;
+                goto err;
+        }
+        frame->local = local;
+        local->op_ret = -2; /* to be used as a flag in _cbk */
+        local->call_count = priv->child_count;
+
+        while (trav) {
+                STACK_WIND (frame, stripe_stats_cbk, trav->xlator,
+                            trav->xlator->mops->stats, flags);
+                trav = trav->next;
+        }
+        return 0;
+ err:
+        STACK_UNWIND (frame, -1, op_errno, NULL);
+        return 0;
 }
 
 /**
  * notify
  */
 int32_t
-notify (xlator_t *this,
-        int32_t event,
-        void *data,
-        ...)
-{
-	stripe_private_t *priv = this->private;
-	int down_client = 0;
-	int i = 0;
-
-	if (!priv)
-		return 0;
-
-	switch (event) 
-	{
-	case GF_EVENT_CHILD_UP:
-	{
-		/* get an index number to set */
-		for (i = 0; i < priv->child_count; i++) {
-			if (data == priv->xl_array[i])
-				break;
-		}
-		priv->state[i] = 1;
-		for (i = 0; i < priv->child_count; i++) {
-			if (!priv->state[i])
-				down_client++;
-		}
-
-		LOCK (&priv->lock);
-		{
-			priv->nodes_down = down_client;
-
-			if (data == FIRST_CHILD (this)) {
-				priv->first_child_down = 0;
-				default_notify (this, event, data);
-			}
-		}
-		UNLOCK (&priv->lock);
-	}
-	break;
-	case GF_EVENT_CHILD_DOWN:
-	{
-		/* get an index number to set */
-		for (i = 0; i < priv->child_count; i++) {
-			if (data == priv->xl_array[i])
-				break;
-		}
-		priv->state[i] = 0;
-		for (i = 0; i < priv->child_count; i++) {
-			if (!priv->state[i])
-				down_client++;
-		}
-
-		LOCK (&priv->lock);
-		{
-			priv->nodes_down = down_client;
-
-			if (data == FIRST_CHILD (this)) {
-				priv->first_child_down = 1;
-				default_notify (this, event, data);
-			}
-		}
-		UNLOCK (&priv->lock);
-	}
-	break;
-
-	default:
-	{
-		/* */
-		default_notify (this, event, data);
-	}
-	break;
-	}
-
-	return 0;
+notify (xlator_t *this, int32_t event, void *data, ...)
+{
+        stripe_private_t *priv = NULL;
+        int               down_client = 0;
+        int               i = 0;
+
+        priv = this->private;
+        if (!priv)
+                return 0;
+
+        switch (event) 
+        {
+        case GF_EVENT_CHILD_UP:
+        {
+                /* get an index number to set */
+                for (i = 0; i < priv->child_count; i++) {
+                        if (data == priv->xl_array[i])
+                                break;
+                }
+                priv->state[i] = 1;
+                for (i = 0; i < priv->child_count; i++) {
+                        if (!priv->state[i])
+                                down_client++;
+                }
+
+                LOCK (&priv->lock);
+                {
+                        priv->nodes_down = down_client;
+
+                        if (data == FIRST_CHILD (this)) {
+                                priv->first_child_down = 0;
+                                default_notify (this, event, data);
+                        }
+                }
+                UNLOCK (&priv->lock);
+        }
+        break;
+        case GF_EVENT_CHILD_DOWN:
+        {
+                /* get an index number to set */
+                for (i = 0; i < priv->child_count; i++) {
+                        if (data == priv->xl_array[i])
+                                break;
+                }
+                priv->state[i] = 0;
+                for (i = 0; i < priv->child_count; i++) {
+                        if (!priv->state[i])
+                                down_client++;
+                }
+
+                LOCK (&priv->lock);
+                {
+                        priv->nodes_down = down_client;
+
+                        if (data == FIRST_CHILD (this)) {
+                                priv->first_child_down = 1;
+                                default_notify (this, event, data);
+                        }
+                }
+                UNLOCK (&priv->lock);
+        }
+        break;
+
+        default:
+        {
+                /* */
+                default_notify (this, event, data);
+        }
+        break;
+        }
+
+        return 0;
 }
 
 int
@@ -3143,82 +3144,86 @@ set_stripe_block_size (xlator_t *this, stripe_private_t *priv, char *data)
 int32_t
 init (xlator_t *this)
 {
-	stripe_private_t *priv = NULL;
-	xlator_list_t *trav = NULL;
-	data_t *data = NULL;
-	int32_t count = 0;
-        int ret = -1;
-
-	trav = this->children;
-	while (trav) {
-		count++;
-		trav = trav->next;
-	}
-
-	if (!count) {
-		gf_log (this->name, GF_LOG_ERROR,
-			"stripe configured without \"subvolumes\" option. "
-			"exiting");
+        stripe_private_t *priv = NULL;
+        xlator_list_t    *trav = NULL;
+        data_t           *data = NULL;
+        int32_t           count = 0;
+        int               ret = -1;
+
+        trav = this->children;
+        while (trav) {
+                count++;
+                trav = trav->next;
+        }
+
+        if (!count) {
+                gf_log (this->name, GF_LOG_ERROR,
+                        "stripe configured without \"subvolumes\" option. "
+                        "exiting");
                 goto out;
-	}
+        }
 
-	if (!this->parents) {
-		gf_log (this->name, GF_LOG_WARNING,
-			"dangling volume. check volfile ");
-	}
+        if (!this->parents) {
+                gf_log (this->name, GF_LOG_WARNING,
+                        "dangling volume. check volfile ");
+        }
   
-	priv = CALLOC (1, sizeof (stripe_private_t));
+        priv = CALLOC (1, sizeof (stripe_private_t));
         if (!priv)
                 goto out;
-	priv->xl_array = CALLOC (1, count * sizeof (xlator_t *));
+        priv->xl_array = CALLOC (count, sizeof (xlator_t *));
         if (!priv->xl_array)
                 goto out;
 
-	priv->child_count = count;
-	LOCK_INIT (&priv->lock);
-
-	trav = this->children;
-	count = 0;
-	while (trav) {
-		priv->xl_array[count++] = trav->xlator;
-		trav = trav->next;
-	}
-
-	if (count > 256) {
-		gf_log (this->name, GF_LOG_ERROR,
-			"maximum number of stripe subvolumes supported "
-			"is 256");
-		goto out;
-	}
-
-	priv->block_size = (128 * GF_UNIT_KB);
-	/* option stripe-pattern *avi:1GB,*pdf:4096 */
-	data = dict_get (this->options, "block-size");
-	if (!data) {
-		gf_log (this->name, GF_LOG_DEBUG,
-			"No \"option block-size <x>\" given, defaulting "
-			"to 128KB");
-	} else {
+        priv->state = CALLOC (count, sizeof (int8_t));
+        if (!priv->xl_array)
+                goto out;
+
+        priv->child_count = count;
+        LOCK_INIT (&priv->lock);
+
+        trav = this->children;
+        count = 0;
+        while (trav) {
+                priv->xl_array[count++] = trav->xlator;
+                trav = trav->next;
+        }
+
+        if (count > 256) {
+                gf_log (this->name, GF_LOG_ERROR,
+                        "maximum number of stripe subvolumes supported "
+                        "is 256");
+                goto out;
+        }
+
+        priv->block_size = (128 * GF_UNIT_KB);
+        /* option stripe-pattern *avi:1GB,*pdf:4096 */
+        data = dict_get (this->options, "block-size");
+        if (!data) {
+                gf_log (this->name, GF_LOG_DEBUG,
+                        "No \"option block-size <x>\" given, defaulting "
+                        "to 128KB");
+        } else {
                 ret = set_stripe_block_size (this, priv, data->data);
                 if (ret)
                         goto out;
-	}
+        }
         
-	priv->xattr_supported = 1;
-	data = dict_get (this->options, "use-xattr");
-	if (data) {
-		if (gf_string2boolean (data->data, 
-				       &priv->xattr_supported) == -1) {
-			gf_log (this->name, GF_LOG_ERROR,
-				"error setting hard check for extended "
-				"attribute");
-			//return -1;
-		}
-	}
-
-	/* notify related */
-	priv->nodes_down = priv->child_count;
-	this->private = priv;
+        priv->xattr_supported = 1;
+        data = dict_get (this->options, "use-xattr");
+        if (data) {
+                if (gf_string2boolean (data->data, 
+                                       &priv->xattr_supported) == -1) {
+                        gf_log (this->name, GF_LOG_ERROR,
+                                "error setting hard check for extended "
+                                "attribute");
+                        //return -1;
+                }
+        }
+
+        /* notify related */
+        priv->nodes_down = priv->child_count;
+        this->private = priv;
 
         ret = 0;
  out:
@@ -3229,7 +3234,7 @@ init (xlator_t *this)
                         FREE (priv);
                 }
         }
-	return ret;
+        return ret;
 } 
 
 /** 
@@ -3239,73 +3244,79 @@ init (xlator_t *this)
 void 
 fini (xlator_t *this)
 {
-	stripe_private_t *priv = this->private;
-	struct stripe_options *prev = NULL;
-	struct stripe_options *trav = priv->pattern;
-	while (trav) {
-		prev = trav;
-		trav = trav->next;
-		FREE (prev);
-	}
-	FREE (priv->xl_array);
-	LOCK_DESTROY (&priv->lock);
-	FREE (priv);
-	return;
+        stripe_private_t      *priv = NULL;
+        struct stripe_options *prev = NULL;
+        struct stripe_options *trav = NULL;
+
+        priv = this->private;
+        if (priv) {
+                if (priv->xl_array)
+                        FREE (priv->xl_array);
+
+                trav = priv->pattern;
+                while (trav) {
+                        prev = trav;
+                        trav = trav->next;
+                        FREE (prev);
+                }
+                LOCK_DESTROY (&priv->lock);
+                FREE (priv);
+        }
+
+        return;
 }
 
 
 struct xlator_fops fops = {
-	.stat        = stripe_stat,
-	.unlink      = stripe_unlink,
-	.symlink     = stripe_symlink,
-	.rename      = stripe_rename,
-	.link        = stripe_link,
-	.chmod       = stripe_chmod,
-	.chown       = stripe_chown,
-	.truncate    = stripe_truncate,
-	.utimens     = stripe_utimens,
-	.create      = stripe_create,
-	.open        = stripe_open,
-	.readv       = stripe_readv,
-	.writev      = stripe_writev,
-	.statfs      = stripe_statfs,
-	.flush       = stripe_flush,
-	.fsync       = stripe_fsync,
-	.setxattr    = stripe_setxattr,
-	.getxattr    = stripe_getxattr,
-	.removexattr = stripe_removexattr,
-	.access      = stripe_access,
-	.ftruncate   = stripe_ftruncate,
-	.fstat       = stripe_fstat,
-	.readlink    = stripe_readlink,
-	.mkdir       = stripe_mkdir,
-	.rmdir       = stripe_rmdir,
-	.lk          = stripe_lk,
-	.opendir     = stripe_opendir,
-	.fsyncdir    = stripe_fsyncdir,
-	.fchmod      = stripe_fchmod,
-	.fchown      = stripe_fchown,
-	.lookup      = stripe_lookup,
-	.setdents    = stripe_setdents,
-	.mknod       = stripe_mknod,
+        .stat        = stripe_stat,
+        .unlink      = stripe_unlink,
+        .symlink     = stripe_symlink,
+        .rename      = stripe_rename,
+        .link        = stripe_link,
+        .chmod       = stripe_chmod,
+        .chown       = stripe_chown,
+        .truncate    = stripe_truncate,
+        .utimens     = stripe_utimens,
+        .create      = stripe_create,
+        .open        = stripe_open,
+        .readv       = stripe_readv,
+        .writev      = stripe_writev,
+        .statfs      = stripe_statfs,
+        .flush       = stripe_flush,
+        .fsync       = stripe_fsync,
+        .setxattr    = stripe_setxattr,
+        .getxattr    = stripe_getxattr,
+        .removexattr = stripe_removexattr,
+        .access      = stripe_access,
+        .ftruncate   = stripe_ftruncate,
+        .fstat       = stripe_fstat,
+        .readlink    = stripe_readlink,
+        .mkdir       = stripe_mkdir,
+        .rmdir       = stripe_rmdir,
+        .lk          = stripe_lk,
+        .opendir     = stripe_opendir,
+        .fsyncdir    = stripe_fsyncdir,
+        .fchmod      = stripe_fchmod,
+        .fchown      = stripe_fchown,
+        .lookup      = stripe_lookup,
+        .setdents    = stripe_setdents,
+        .mknod       = stripe_mknod,
 };
 
 struct xlator_mops mops = {
-	.stats  = stripe_stats,
+        .stats  = stripe_stats,
 };
 
 struct xlator_cbks cbks = {
-	.release    = stripe_release,
-	.releasedir = stripe_releasedir
 };
 
 
 struct volume_options options[] = {
-	{ .key  = {"block-size"}, 
-	  .type = GF_OPTION_TYPE_ANY 
-	},
-	{ .key  = {"use-xattr"}, 
-	  .type = GF_OPTION_TYPE_BOOL
-	},
-	{ .key  = {NULL} },
+        { .key  = {"block-size"}, 
+          .type = GF_OPTION_TYPE_ANY 
+        },
+        { .key  = {"use-xattr"}, 
+          .type = GF_OPTION_TYPE_BOOL
+        },
+        { .key  = {NULL} },
 };
diff --git a/xlators/cluster/stripe/src/stripe.h b/xlators/cluster/stripe/src/stripe.h
new file mode 100644
index 000000000..fbaf8fad6
--- /dev/null
+++ b/xlators/cluster/stripe/src/stripe.h
@@ -0,0 +1,125 @@
+/*
+  Copyright (c) 2009 Z RESEARCH, Inc. <http://www.zresearch.com>
+  This file is part of GlusterFS.
+
+  GlusterFS is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published
+  by the Free Software Foundation; either version 3 of the License,
+  or (at your option) any later version.
+
+  GlusterFS is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see
+  <http://www.gnu.org/licenses/>.
+*/
+
+
+#ifndef _STRIPE_H_
+#define _STRIPE_H_
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#include "xlator.h"
+#include "logging.h"
+#include "defaults.h"
+#include "compat.h"
+#include "compat-errno.h"
+#include <fnmatch.h>
+#include <signal.h>
+
+
+/**
+ * struct stripe_options : This keeps the pattern and the block-size 
+ *     information, which is used for striping on a file.
+ */
+struct stripe_options {
+        struct stripe_options *next;
+        char                   path_pattern[256];
+        uint64_t               block_size;
+};
+
+/**
+ * Private structure for stripe translator 
+ */
+struct stripe_private {
+        struct stripe_options  *pattern;
+        xlator_t              **xl_array;
+        uint64_t                block_size;
+        gf_lock_t               lock;
+        uint8_t                 nodes_down;
+        int8_t                  first_child_down;
+        int8_t                  child_count;
+        int8_t                 *state; /* Current state of child node */
+        gf_boolean_t            xattr_supported;  /* default yes */
+};
+
+/**
+ * Used to keep info about the replies received from fops->readv calls 
+ */
+struct readv_replies {
+        struct iovec *vector;
+        int32_t       count;    //count of vector
+        int32_t       op_ret;   //op_ret of readv
+        int32_t       op_errno;
+        struct stat   stbuf;    /* 'stbuf' is also a part of reply */
+};
+
+/**
+ * Local structure to be passed with all the frames in case of STACK_WIND
+ */
+struct stripe_local; /* this itself is used inside the structure; */
+
+struct stripe_local {
+        struct stripe_local *next;
+        call_frame_t        *orig_frame; 
+
+        /* Used by _cbk functions */
+        struct stat          stbuf;
+        struct readv_replies *replies;
+        struct statvfs       statvfs_buf;
+        dir_entry_t         *entry;
+        struct xlator_stats  stats;
+
+        int8_t               revalidate;
+        int8_t               failed;
+        int8_t               unwind;
+
+        int32_t              node_index;
+        int32_t              call_count;
+        int32_t              wind_count; /* used instead of child_cound 
+                                            in case of read and write */
+        int32_t              op_ret;
+        int32_t              op_errno; 
+        int32_t              count;
+        int32_t              flags;
+        char                *name;
+        inode_t             *inode;
+
+        loc_t                loc;
+        loc_t                loc2;
+
+        /* For File I/O fops */
+        dict_t              *dict;
+
+        /* General usage */
+        off_t                offset;
+        off_t                stripe_size;
+
+        int8_t              *list;
+        struct flock         lock;
+        fd_t                *fd;
+        void                *value;
+        struct iobref       *iobref;
+};
+
+typedef struct stripe_local   stripe_local_t;
+typedef struct stripe_private stripe_private_t;
+
+#endif /* _STRIPE_H_ */