Added all files

7 files changed, 4138 insertions, 0 deletions

diff --git a/xlators/debug/Makefile.am b/xlators/debug/Makefile.am
new file mode 100644
index 000000000..16cf893a1
--- /dev/null
+++ b/xlators/debug/Makefile.am
@@ -0,0 +1,3 @@
+SUBDIRS = trace error-gen
+
+CLEANFILES = 
diff --git a/xlators/debug/error-gen/Makefile.am b/xlators/debug/error-gen/Makefile.am
new file mode 100644
index 000000000..d471a3f92
--- /dev/null
+++ b/xlators/debug/error-gen/Makefile.am
@@ -0,0 +1,3 @@
+SUBDIRS = src
+
+CLEANFILES = 
diff --git a/xlators/debug/error-gen/src/Makefile.am b/xlators/debug/error-gen/src/Makefile.am
new file mode 100644
index 000000000..1bd7f332c
--- /dev/null
+++ b/xlators/debug/error-gen/src/Makefile.am
@@ -0,0 +1,14 @@
+
+xlator_LTLIBRARIES = error-gen.la
+xlatordir = $(libdir)/glusterfs/$(PACKAGE_VERSION)/xlator/debug
+
+error_gen_la_LDFLAGS = -module -avoidversion
+
+error_gen_la_SOURCES = error-gen.c
+error_gen_la_LIBADD = $(top_builddir)/libglusterfs/src/libglusterfs.la
+
+AM_CFLAGS = -fPIC -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -Wall -D$(GF_HOST_OS)\
+	-I$(top_srcdir)/libglusterfs/src -shared -nostartfiles $(GF_CFLAGS)
+
+CLEANFILES = 
+
diff --git a/xlators/debug/error-gen/src/error-gen.c b/xlators/debug/error-gen/src/error-gen.c
new file mode 100644
index 000000000..9c0b3253e
--- /dev/null
+++ b/xlators/debug/error-gen/src/error-gen.c
@@ -0,0 +1,1780 @@
+/*
+  Copyright (c) 2008 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 _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#include "xlator.h"
+
+typedef struct {
+	int op_count;
+} eg_t;
+
+int error_gen (xlator_t *this)
+{
+	eg_t *egp = NULL;
+	int count = 0;
+	egp = this->private;
+	count = ++egp->op_count;
+	if((count % 10) == 0) {
+		count = count / 10;
+		if ((count % 2) == 0)
+			return ENOTCONN;
+		else
+			return EIO;
+	}
+	return 0;
+}
+
+static int32_t
+error_gen_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)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      inode,
+		      buf,
+		      dict);
+	return 0;
+}
+
+int32_t
+error_gen_lookup (call_frame_t *frame,
+		  xlator_t *this,
+		  loc_t *loc,
+		  dict_t *xattr_req)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL, NULL, NULL);
+		return 0;
+	}
+	STACK_WIND (frame,
+		    error_gen_lookup_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->lookup,
+		    loc,
+		    xattr_req);
+	return 0;
+}
+
+
+int32_t
+error_gen_forget (xlator_t *this,
+		  inode_t *inode)
+{
+	return 0;
+}
+
+int32_t
+error_gen_stat_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;
+}
+
+int32_t
+error_gen_stat (call_frame_t *frame,
+		xlator_t *this,
+		loc_t *loc)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL);
+		return 0;
+	}
+	STACK_WIND (frame,
+		    error_gen_stat_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->stat,
+		    loc);
+	return 0;
+}
+
+int32_t
+error_gen_chmod_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;
+}
+
+int32_t
+error_gen_chmod (call_frame_t *frame,
+		 xlator_t *this,
+		 loc_t *loc,
+		 mode_t mode)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL);
+		return 0;
+	}
+	STACK_WIND (frame,
+		    error_gen_chmod_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->chmod,
+		    loc,
+		    mode);
+	return 0;
+}
+
+
+int32_t
+error_gen_fchmod_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;
+}
+
+int32_t
+error_gen_fchmod (call_frame_t *frame,
+		  xlator_t *this,
+		  fd_t *fd,
+		  mode_t mode)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL);
+		return 0;
+	}
+	STACK_WIND (frame,
+		    error_gen_fchmod_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->fchmod,
+		    fd,
+		    mode);
+	return 0;
+}
+
+int32_t
+error_gen_chown_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;
+}
+
+int32_t
+error_gen_chown (call_frame_t *frame,
+		 xlator_t *this,
+		 loc_t *loc,
+		 uid_t uid,
+		 gid_t gid)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL);
+		return 0;
+	}
+	STACK_WIND (frame,
+		    error_gen_chown_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->chown,
+		    loc,
+		    uid,
+		    gid);
+	return 0;
+}
+
+int32_t
+error_gen_fchown_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;
+}
+
+int32_t
+error_gen_fchown (call_frame_t *frame,
+		  xlator_t *this,
+		  fd_t *fd,
+		  uid_t uid,
+		  gid_t gid)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL);
+		return 0;
+	}
+	STACK_WIND (frame,
+		    error_gen_fchown_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->fchown,
+		    fd,
+		    uid,
+		    gid);
+	return 0;
+}
+
+int32_t
+error_gen_truncate_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;
+}
+
+int32_t
+error_gen_truncate (call_frame_t *frame,
+		    xlator_t *this,
+		    loc_t *loc,
+		    off_t offset)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL);
+		return 0;
+	}
+	STACK_WIND (frame,
+		    error_gen_truncate_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->truncate,
+		    loc,
+		    offset);
+	return 0;
+}
+
+int32_t
+error_gen_ftruncate_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;
+}
+
+int32_t
+error_gen_ftruncate (call_frame_t *frame,
+		     xlator_t *this,
+		     fd_t *fd,
+		     off_t offset)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL);
+		return 0;
+	}
+	STACK_WIND (frame,
+		    error_gen_ftruncate_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->ftruncate,
+		    fd,
+		    offset);
+	return 0;
+}
+
+int32_t
+error_gen_utimens_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;
+}
+
+
+int32_t
+error_gen_utimens (call_frame_t *frame,
+		   xlator_t *this,
+		   loc_t *loc,
+		   struct timespec tv[2])
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL);
+		return 0;
+	}
+	STACK_WIND (frame,
+		    error_gen_utimens_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->utimens,
+		    loc,
+		    tv);
+	return 0;
+}
+
+int32_t
+error_gen_access_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;
+}
+
+int32_t
+error_gen_access (call_frame_t *frame,
+		  xlator_t *this,
+		  loc_t *loc,
+		  int32_t mask)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno);
+		return 0;
+	}
+	STACK_WIND (frame,
+		    error_gen_access_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->access,
+		    loc,
+		    mask);
+	return 0;
+}
+
+
+int32_t
+error_gen_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;
+}
+
+int32_t
+error_gen_readlink (call_frame_t *frame,
+		    xlator_t *this,
+		    loc_t *loc,
+		    size_t size)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL);
+		return 0;
+	}
+	STACK_WIND (frame,
+		    error_gen_readlink_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->readlink,
+		    loc,
+		    size);
+	return 0;
+}
+
+
+int32_t
+error_gen_mknod_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;
+}
+
+int32_t
+error_gen_mknod (call_frame_t *frame,
+		 xlator_t *this,
+		 loc_t *loc,
+		 mode_t mode,
+		 dev_t rdev)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL, NULL);
+		return 0;
+	}
+	STACK_WIND (frame,
+		    error_gen_mknod_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->mknod,
+		    loc, mode, rdev);
+	return 0;
+}
+
+int32_t
+error_gen_mkdir_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;
+}
+
+int32_t
+error_gen_mkdir (call_frame_t *frame,
+		 xlator_t *this,
+		 loc_t *loc,
+		 mode_t mode)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL, NULL);
+		return 0;
+	}
+	STACK_WIND (frame,
+		    error_gen_mkdir_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->mkdir,
+		    loc, mode);
+	return 0;
+}
+
+int32_t
+error_gen_unlink_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;
+}
+
+int32_t
+error_gen_unlink (call_frame_t *frame,
+		  xlator_t *this,
+		  loc_t *loc)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno);
+		return 0;
+	}
+	STACK_WIND (frame,
+		    error_gen_unlink_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->unlink,
+		    loc);
+	return 0;
+}
+
+int32_t
+error_gen_rmdir_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;
+}
+
+int32_t
+error_gen_rmdir (call_frame_t *frame,
+		 xlator_t *this,
+		 loc_t *loc)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno);
+		return 0;
+	}
+	STACK_WIND (frame,
+		    error_gen_rmdir_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->rmdir,
+		    loc);
+	return 0;
+}
+
+
+int32_t
+error_gen_symlink_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;
+}
+
+int32_t
+error_gen_symlink (call_frame_t *frame,
+		   xlator_t *this,
+		   const char *linkpath,
+		   loc_t *loc)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL, NULL);
+		return 0;
+	}
+	STACK_WIND (frame,
+		    error_gen_symlink_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->symlink,
+		    linkpath, loc);
+	return 0;
+}
+
+
+int32_t
+error_gen_rename_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;
+}
+
+int32_t
+error_gen_rename (call_frame_t *frame,
+		  xlator_t *this,
+		  loc_t *oldloc,
+		  loc_t *newloc)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL);
+		return 0;
+	}
+	STACK_WIND (frame,
+		    error_gen_rename_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->rename,
+		    oldloc, newloc);
+	return 0;
+}
+
+
+int32_t
+error_gen_link_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;
+}
+
+int32_t
+error_gen_link (call_frame_t *frame,
+		xlator_t *this,
+		loc_t *oldloc,
+		loc_t *newloc)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL, NULL);
+		return 0;
+	}
+	STACK_WIND (frame,
+		    error_gen_link_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->link,
+		    oldloc, newloc);
+	return 0;
+}
+
+
+int32_t
+error_gen_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)
+{
+	STACK_UNWIND (frame, op_ret, op_errno, fd, inode, buf);
+	return 0;
+}
+
+int32_t
+error_gen_create (call_frame_t *frame,
+		  xlator_t *this,
+		  loc_t *loc,
+		  int32_t flags,
+		  mode_t mode, fd_t *fd)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL, NULL, NULL);
+		return 0;
+	}
+
+	STACK_WIND (frame, error_gen_create_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->create,
+		    loc, flags, mode, fd);
+	return 0;
+}
+
+int32_t
+error_gen_open_cbk (call_frame_t *frame,
+		    void *cookie,
+		    xlator_t *this,
+		    int32_t op_ret,
+		    int32_t op_errno,
+		    fd_t *fd)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      fd);
+	return 0;
+}
+
+int32_t
+error_gen_open (call_frame_t *frame,
+		xlator_t *this,
+		loc_t *loc,
+		int32_t flags, fd_t *fd)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL);
+		return 0;
+	}
+
+	STACK_WIND (frame,
+		    error_gen_open_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->open,
+		    loc, flags, fd);
+	return 0;
+}
+
+int32_t
+error_gen_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)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      vector,
+		      count,
+		      stbuf);
+	return 0;
+}
+
+int32_t
+error_gen_readv (call_frame_t *frame,
+		 xlator_t *this,
+		 fd_t *fd,
+		 size_t size,
+		 off_t offset)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL, 0, NULL);
+		return 0;
+	}
+
+
+	STACK_WIND (frame,
+		    error_gen_readv_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->readv,
+		    fd,
+		    size,
+		    offset);
+	return 0;
+}
+
+
+int32_t
+error_gen_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;
+}
+
+int32_t
+error_gen_writev (call_frame_t *frame,
+		  xlator_t *this,
+		  fd_t *fd,
+		  struct iovec *vector,
+		  int32_t count,
+		  off_t off)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL);
+		return 0;
+	}
+
+
+	STACK_WIND (frame,
+		    error_gen_writev_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->writev,
+		    fd,
+		    vector,
+		    count,
+		    off);
+	return 0;
+}
+
+int32_t
+error_gen_flush_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;
+}
+
+int32_t
+error_gen_flush (call_frame_t *frame,
+		 xlator_t *this,
+		 fd_t *fd)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno);
+		return 0;
+	}
+
+	STACK_WIND (frame,
+		    error_gen_flush_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->flush,
+		    fd);
+	return 0;
+}
+
+
+int32_t
+error_gen_fsync_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;
+}
+
+int32_t
+error_gen_fsync (call_frame_t *frame,
+		 xlator_t *this,
+		 fd_t *fd,
+		 int32_t flags)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno);
+		return 0;
+	}
+
+	STACK_WIND (frame,
+		    error_gen_fsync_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->fsync,
+		    fd,
+		    flags);
+	return 0;
+}
+
+int32_t
+error_gen_fstat_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;
+}
+
+int32_t
+error_gen_fstat (call_frame_t *frame,
+		 xlator_t *this,
+		 fd_t *fd)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL);
+		return 0;
+	}
+
+	STACK_WIND (frame,
+		    error_gen_fstat_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->fstat,
+		    fd);
+	return 0;
+}
+
+int32_t
+error_gen_opendir_cbk (call_frame_t *frame,
+		       void *cookie,
+		       xlator_t *this,
+		       int32_t op_ret,
+		       int32_t op_errno,
+		       fd_t *fd)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      fd);
+	return 0;
+}
+
+int32_t
+error_gen_opendir (call_frame_t *frame,
+		   xlator_t *this,
+		   loc_t *loc, fd_t *fd)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL);
+		return 0;
+	}
+
+	STACK_WIND (frame,
+		    error_gen_opendir_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->opendir,
+		    loc, fd);
+	return 0;
+}
+
+
+int32_t
+error_gen_getdents_cbk (call_frame_t *frame,
+			void *cookie,
+			xlator_t *this,
+			int32_t op_ret,
+			int32_t op_errno,
+			dir_entry_t *entries,
+			int32_t count)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      entries,
+		      count);
+	return 0;
+}
+
+int32_t
+error_gen_getdents (call_frame_t *frame,
+		    xlator_t *this,
+		    fd_t *fd,
+		    size_t size,
+		    off_t offset,
+		    int32_t flag)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL, 0);
+		return 0;
+	}
+
+	STACK_WIND (frame,
+		    error_gen_getdents_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->getdents,
+		    fd,
+		    size,
+		    offset,
+		    flag);
+	return 0;
+}
+
+
+int32_t
+error_gen_setdents_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;
+}
+
+int32_t
+error_gen_setdents (call_frame_t *frame,
+		    xlator_t *this,
+		    fd_t *fd,
+		    int32_t flags,
+		    dir_entry_t *entries,
+		    int32_t count)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL, 0);
+		return 0;
+	}
+
+	STACK_WIND (frame,
+		    error_gen_setdents_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->setdents,
+		    fd,
+		    flags,
+		    entries,
+		    count);
+	return 0;
+}
+
+
+int32_t
+error_gen_fsyncdir_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;
+}
+
+int32_t
+error_gen_fsyncdir (call_frame_t *frame,
+		    xlator_t *this,
+		    fd_t *fd,
+		    int32_t flags)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno);
+		return 0;
+	}
+
+	STACK_WIND (frame,
+		    error_gen_fsyncdir_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->fsyncdir,
+		    fd,
+		    flags);
+	return 0;
+}
+
+
+int32_t
+error_gen_statfs_cbk (call_frame_t *frame,
+		      void *cookie,
+		      xlator_t *this,
+		      int32_t op_ret,
+		      int32_t op_errno,
+		      struct statvfs *buf)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      buf);
+	return 0;
+}
+
+int32_t
+error_gen_statfs (call_frame_t *frame,
+		  xlator_t *this,
+		  loc_t *loc)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL);
+		return 0;
+	}
+
+	STACK_WIND (frame,
+		    error_gen_statfs_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->statfs,
+		    loc);
+	return 0;
+}
+
+
+int32_t
+error_gen_setxattr_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;
+}
+
+int32_t
+error_gen_setxattr (call_frame_t *frame,
+		    xlator_t *this,
+		    loc_t *loc,
+		    dict_t *dict,
+		    int32_t flags)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno);
+		return 0;
+	}
+
+	STACK_WIND (frame,
+		    error_gen_setxattr_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->setxattr,
+		    loc,
+		    dict,
+		    flags);
+	return 0;
+}
+
+int32_t
+error_gen_getxattr_cbk (call_frame_t *frame,
+			void *cookie,
+			xlator_t *this,
+			int32_t op_ret,
+			int32_t op_errno,
+			dict_t *dict)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      dict);
+	return 0;
+}
+
+int32_t
+error_gen_getxattr (call_frame_t *frame,
+		    xlator_t *this,
+		    loc_t *loc,
+		    const char *name)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL);
+		return 0;
+	}
+
+	STACK_WIND (frame,
+		    error_gen_getxattr_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->getxattr,
+		    loc,
+		    name);
+	return 0;
+}
+
+int32_t
+error_gen_xattrop_cbk (call_frame_t *frame,
+		       void *cookie,
+		       xlator_t *this,
+		       int32_t op_ret,
+		       int32_t op_errno,
+		       dict_t *dict)
+{
+	STACK_UNWIND (frame, op_ret, op_errno, dict);
+	return 0;
+}
+
+int32_t
+error_gen_xattrop (call_frame_t *frame,
+		   xlator_t *this,
+		   loc_t *loc,
+		   gf_xattrop_flags_t flags,
+		   dict_t *dict)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL);
+		return 0;
+	}
+
+	STACK_WIND (frame,
+		    error_gen_xattrop_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->xattrop,
+		    loc, flags, dict);
+	return 0;
+}
+
+int32_t
+error_gen_fxattrop_cbk (call_frame_t *frame,
+			void *cookie,
+			xlator_t *this,
+			int32_t op_ret,
+			int32_t op_errno,
+			dict_t *dict)
+{
+	STACK_UNWIND (frame, op_ret, op_errno, dict);
+	return 0;
+}
+
+int32_t
+error_gen_fxattrop (call_frame_t *frame,
+  		    xlator_t *this,
+  		    fd_t *fd,
+  		    gf_xattrop_flags_t flags,
+  		    dict_t *dict)
+{
+  	int op_errno = 0;
+  	op_errno = error_gen(this);
+  	if (op_errno) {
+  		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+  		STACK_UNWIND (frame, -1, op_errno, NULL);
+  		return 0;
+  	}
+
+  	STACK_WIND (frame,
+  		    error_gen_fxattrop_cbk,
+  		    FIRST_CHILD(this),
+  		    FIRST_CHILD(this)->fops->fxattrop,
+  		    fd, flags, dict);
+  	return 0;
+}
+
+int32_t
+error_gen_removexattr_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;
+}
+
+int32_t
+error_gen_removexattr (call_frame_t *frame,
+		       xlator_t *this,
+		       loc_t *loc,
+		       const char *name)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL);
+		return 0;
+	}
+
+	STACK_WIND (frame,
+		    error_gen_removexattr_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->removexattr,
+		    loc,
+		    name);
+	return 0;
+}
+
+int32_t
+error_gen_lk_cbk (call_frame_t *frame,
+		  void *cookie,
+		  xlator_t *this,
+		  int32_t op_ret,
+		  int32_t op_errno,
+		  struct flock *lock)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      lock);
+	return 0;
+}
+
+int32_t
+error_gen_lk (call_frame_t *frame,
+	      xlator_t *this,
+	      fd_t *fd,
+	      int32_t cmd,
+	      struct flock *lock)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL);
+		return 0;
+	}
+
+	STACK_WIND (frame,
+		    error_gen_lk_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->lk,
+		    fd,
+		    cmd,
+		    lock);
+	return 0;
+}
+
+
+int32_t
+error_gen_inodelk_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;
+}
+
+
+int32_t
+error_gen_inodelk (call_frame_t *frame, xlator_t *this,
+		   loc_t *loc, int32_t cmd, struct flock *lock)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno);
+		return 0;
+	}
+
+	STACK_WIND (frame,
+		    error_gen_inodelk_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->inodelk,
+		    loc, cmd, lock);
+	return 0;
+}
+
+
+int32_t
+error_gen_finodelk_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;
+}
+
+
+int32_t
+error_gen_finodelk (call_frame_t *frame, xlator_t *this,
+		    fd_t *fd, int32_t cmd, struct flock *lock)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno);
+		return 0;
+	}
+
+	STACK_WIND (frame,
+		    error_gen_finodelk_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->finodelk,
+		    fd, cmd, lock);
+	return 0;
+}
+
+
+int32_t
+error_gen_entrylk_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;
+}
+
+int32_t
+error_gen_entrylk (call_frame_t *frame, xlator_t *this,
+		   loc_t *loc, const char *basename,
+		   entrylk_cmd cmd, entrylk_type type)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno);
+		return 0;
+	}
+
+	STACK_WIND (frame, error_gen_entrylk_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->entrylk,
+		    loc, basename, cmd, type);
+	return 0;
+}
+
+int32_t
+error_gen_fentrylk_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;
+}
+
+int32_t
+error_gen_fentrylk (call_frame_t *frame, xlator_t *this,
+		    fd_t *fd, const char *basename,
+		    entrylk_cmd cmd, entrylk_type type)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno);
+		return 0;
+	}
+
+	STACK_WIND (frame, error_gen_fentrylk_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->fentrylk,
+		    fd, basename, cmd, type);
+	return 0;
+}
+
+
+/* Management operations */
+
+int32_t
+error_gen_stats_cbk (call_frame_t *frame,
+		     void *cookie,
+		     xlator_t *this,
+		     int32_t op_ret,
+		     int32_t op_errno,
+		     struct xlator_stats *stats)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      stats);
+	return 0;
+}
+
+
+int32_t
+error_gen_stats (call_frame_t *frame,
+		 xlator_t *this,
+		 int32_t flags)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL);
+		return 0;
+	}
+
+	STACK_WIND (frame,
+		    error_gen_stats_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->mops->stats,
+		    flags);
+	return 0;
+}
+
+
+
+int32_t
+error_gen_getspec_cbk (call_frame_t *frame,
+		       void *cookie,
+		       xlator_t *this,
+		       int32_t op_ret,
+		       int32_t op_errno,
+		       char *spec_data)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      spec_data);
+	return 0;
+}
+
+
+int32_t
+error_gen_getspec (call_frame_t *frame,
+		   xlator_t *this,
+		   const char *key,
+		   int32_t flags)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL);
+		return 0;
+	}
+
+	STACK_WIND (frame,
+		    error_gen_getspec_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->mops->getspec,
+		    key, flags);
+	return 0;
+}
+
+
+int32_t
+error_gen_checksum_cbk (call_frame_t *frame,
+			void *cookie,
+			xlator_t *this,
+			int32_t op_ret,
+			int32_t op_errno,
+			uint8_t *file_checksum,
+			uint8_t *dir_checksum)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      file_checksum,
+		      dir_checksum);
+	return 0;
+}
+
+
+int32_t
+error_gen_checksum (call_frame_t *frame,
+		    xlator_t *this,
+		    loc_t *loc,
+		    int32_t flag)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL, NULL);
+		return 0;
+	}
+
+	STACK_WIND (frame,
+		    error_gen_checksum_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->checksum,
+		    loc,
+		    flag);
+	return 0;
+}
+
+int32_t
+error_gen_readdir_cbk (call_frame_t *frame,
+		       void *cookie,
+		       xlator_t *this,
+		       int32_t op_ret,
+		       int32_t op_errno,
+		       gf_dirent_t *entries)
+{
+	STACK_UNWIND (frame, op_ret, op_errno, entries);
+	return 0;
+}
+
+
+int32_t
+error_gen_readdir (call_frame_t *frame,
+		   xlator_t *this,
+		   fd_t *fd,
+		   size_t size,
+		   off_t off)
+{
+	int op_errno = 0;
+	op_errno = error_gen(this);
+	if (op_errno) {
+		GF_ERROR(this, "unwind(-1, %s)", strerror (op_errno));
+		STACK_UNWIND (frame, -1, op_errno, NULL);
+		return 0;
+	}
+
+	STACK_WIND (frame,
+		    error_gen_readdir_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->readdir,
+		    fd, size, off);
+	return 0;
+}
+
+int32_t
+error_gen_closedir (xlator_t *this,
+		    fd_t *fd)
+{
+	return 0;
+}
+
+int32_t
+error_gen_close (xlator_t *this,
+		 fd_t *fd)
+{
+	return 0;
+}
+
+int
+init (xlator_t *this)
+{
+	eg_t *pvt = NULL;
+
+	if (!this->children || this->children->next) {
+		gf_log (this->name, GF_LOG_ERROR, 
+			"error-gen not configured with one subvolume");
+		return -1;
+	}
+
+	if (!this->parents) {
+		gf_log (this->name, GF_LOG_WARNING,
+			"dangling volume. check volfile ");
+	}
+  
+	pvt = CALLOC (1, sizeof (eg_t));
+	this->private = pvt;
+	return 0;
+}
+
+void
+fini (xlator_t *this)
+{
+	gf_log (this->name, GF_LOG_DEBUG, "fini called");
+	return;
+}
+
+
+struct xlator_fops fops = {
+	.lookup      = error_gen_lookup,
+	.stat        = error_gen_stat,
+	.readlink    = error_gen_readlink,
+	.mknod       = error_gen_mknod,
+	.mkdir       = error_gen_mkdir,
+	.unlink      = error_gen_unlink,
+	.rmdir       = error_gen_rmdir,
+	.symlink     = error_gen_symlink,
+	.rename      = error_gen_rename,
+	.link        = error_gen_link,
+	.chmod       = error_gen_chmod,
+	.chown       = error_gen_chown,
+	.truncate    = error_gen_truncate,
+	.utimens     = error_gen_utimens,
+	.create      = error_gen_create,
+	.open        = error_gen_open,
+	.readv       = error_gen_readv,
+	.writev      = error_gen_writev,
+	.statfs      = error_gen_statfs,
+	.flush       = error_gen_flush,
+	.fsync       = error_gen_fsync,
+	.setxattr    = error_gen_setxattr,
+	.getxattr    = error_gen_getxattr,
+	.removexattr = error_gen_removexattr,
+	.opendir     = error_gen_opendir,
+	.readdir     = error_gen_readdir,
+	.getdents    = error_gen_getdents,
+	.fsyncdir    = error_gen_fsyncdir,
+	.access      = error_gen_access,
+	.ftruncate   = error_gen_ftruncate,
+	.fstat       = error_gen_fstat,
+	.lk          = error_gen_lk,
+	.fchmod      = error_gen_fchmod,
+	.fchown      = error_gen_fchown,
+	.setdents    = error_gen_setdents,
+	.lookup_cbk  = error_gen_lookup_cbk,
+	.checksum    = error_gen_checksum,
+	.xattrop     = error_gen_xattrop,
+	.fxattrop    = error_gen_fxattrop,
+	.inodelk     = error_gen_inodelk,
+	.finodelk    = error_gen_finodelk,
+	.entrylk     = error_gen_entrylk,
+	.fentrylk    = error_gen_fentrylk
+};
+
+struct xlator_mops mops = {
+	.stats = error_gen_stats,
+	.getspec = error_gen_getspec,
+};
+
+struct xlator_cbks cbks = {
+	.release = error_gen_close,
+	.releasedir = error_gen_closedir,
+};
diff --git a/xlators/debug/trace/Makefile.am b/xlators/debug/trace/Makefile.am
new file mode 100644
index 000000000..d471a3f92
--- /dev/null
+++ b/xlators/debug/trace/Makefile.am
@@ -0,0 +1,3 @@
+SUBDIRS = src
+
+CLEANFILES = 
diff --git a/xlators/debug/trace/src/Makefile.am b/xlators/debug/trace/src/Makefile.am
new file mode 100644
index 000000000..0f1679a04
--- /dev/null
+++ b/xlators/debug/trace/src/Makefile.am
@@ -0,0 +1,14 @@
+
+xlator_LTLIBRARIES = trace.la
+xlatordir = $(libdir)/glusterfs/$(PACKAGE_VERSION)/xlator/debug
+
+trace_la_LDFLAGS = -module -avoidversion
+
+trace_la_SOURCES = trace.c
+trace_la_LIBADD = $(top_builddir)/libglusterfs/src/libglusterfs.la
+
+AM_CFLAGS = -fPIC -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -Wall -D$(GF_HOST_OS)\
+	-I$(top_srcdir)/libglusterfs/src -shared -nostartfiles $(GF_CFLAGS)
+
+CLEANFILES = 
+
diff --git a/xlators/debug/trace/src/trace.c b/xlators/debug/trace/src/trace.c
new file mode 100644
index 000000000..3ccf11a83
--- /dev/null
+++ b/xlators/debug/trace/src/trace.c
@@ -0,0 +1,2321 @@
+/*
+  Copyright (c) 2006, 2007, 2008 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 _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+/**
+ * xlators/debug/trace :
+ *    This translator logs all the arguments to the fops/mops and also 
+ *    their _cbk functions, which later passes the call to next layer. 
+ *    Very helpful translator for debugging.
+ */
+
+#include <time.h>
+#include <errno.h>
+#include "glusterfs.h"
+#include "xlator.h"
+#include "common-utils.h"
+
+#define ERR_EINVAL_NORETURN(cond)                \
+do                                               \
+  {						 \
+    if ((cond))					 \
+      {						 \
+	gf_log ("ERROR", GF_LOG_ERROR,   	 \
+		"%s: %s: (%s) is true", 	 \
+		__FILE__, __FUNCTION__, #cond);	 \
+      }                                          \
+  } while (0)
+
+typedef struct trace_private {
+	int32_t debug_flag;
+} trace_private_t;
+
+struct {
+	char *name;
+	int enabled;
+} trace_fop_names[GF_FOP_MAXVALUE];
+
+int32_t 
+trace_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)
+{
+	char atime_buf[256], mtime_buf[256], ctime_buf[256];
+	ERR_EINVAL_NORETURN (!this);
+
+	if (trace_fop_names[GF_FOP_CREATE].enabled) {
+		if (op_ret >= 0) {
+			strftime (atime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_atime));
+			strftime (mtime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_mtime));
+			strftime (ctime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_ctime));
+
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, fd=%p, ino=%"PRIu64"), "
+				"*buf {st_dev=%"GF_PRI_DEV", st_ino=%"PRIu64", "
+				"st_mode=%d, st_nlink=%"GF_PRI_NLINK", st_uid=%d, "
+				"st_gid=%d, st_rdev=%"GF_PRI_DEV", st_size=%"PRId64", "
+				"st_blksize=%"GF_PRI_BLKSIZE", st_blocks=%"PRId64", "
+				"st_atime=%s, st_mtime=%s, st_ctime=%s})",
+				frame->root->unique, op_ret, fd, inode->ino, buf->st_dev, 
+				buf->st_ino, buf->st_mode, buf->st_nlink, 
+				buf->st_uid, buf->st_gid, buf->st_rdev, buf->st_size, 
+				buf->st_blksize, 
+				buf->st_blocks, atime_buf, mtime_buf, ctime_buf);
+		} else {
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, op_errno=%d)",
+				frame->root->unique, op_ret, op_errno);
+		}    
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno, fd, inode, buf);
+	return 0;
+}
+
+int32_t 
+trace_open_cbk (call_frame_t *frame,
+		void *cookie,
+		xlator_t *this,
+		int32_t op_ret,
+		int32_t op_errno,
+		fd_t *fd)
+{
+	ERR_EINVAL_NORETURN (!this);
+
+	if (trace_fop_names[GF_FOP_OPEN].enabled) {
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (op_ret=%d, op_errno=%d, *fd=%p)",
+			frame->root->unique, op_ret, op_errno, fd);
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno, fd);
+	return 0;
+}
+
+int32_t 
+trace_stat_cbk (call_frame_t *frame,
+		void *cookie,
+		xlator_t *this,
+		int32_t op_ret,
+		int32_t op_errno,
+		struct stat *buf)
+{
+	char atime_buf[256], mtime_buf[256], ctime_buf[256];
+	ERR_EINVAL_NORETURN (!this);
+  
+	if (trace_fop_names[GF_FOP_STAT].enabled) {
+
+		if (op_ret >= 0) {
+			strftime (atime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_atime));
+			strftime (mtime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_mtime));
+			strftime (ctime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_ctime));
+
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, buf {st_dev=%"GF_PRI_DEV", "
+				"st_ino=%"PRIu64", st_mode=%d, st_nlink=%"GF_PRI_NLINK", "
+				"st_uid=%d, st_gid=%d, st_rdev=%"GF_PRI_DEV", st_size=%"PRId64
+				", st_blksize=%"GF_PRI_BLKSIZE", st_blocks=%"PRId64", "
+				"st_atime=%s, st_mtime=%s, st_ctime=%s})",
+				frame->root->unique, op_ret, buf->st_dev, buf->st_ino, 
+				buf->st_mode, buf->st_nlink, buf->st_uid, buf->st_gid, 
+				buf->st_rdev, buf->st_size, buf->st_blksize, 
+				buf->st_blocks, atime_buf, mtime_buf, ctime_buf);
+		} else {
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, op_errno=%d)",
+				frame->root->unique, op_ret, op_errno);
+		}    
+	}    
+
+	STACK_UNWIND (frame, op_ret, op_errno, buf);
+	return 0;
+}
+
+int32_t 
+trace_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 *buf)
+{
+	char atime_buf[256], mtime_buf[256], ctime_buf[256];
+	ERR_EINVAL_NORETURN (!this);
+
+	if (trace_fop_names[GF_FOP_READ].enabled) {
+
+		if (op_ret >= 0) {
+			strftime (atime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_atime));
+			strftime (mtime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_mtime));
+			strftime (ctime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_ctime));
+
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, *buf {st_dev=%"GF_PRI_DEV", "
+				"st_ino=%"PRIu64", st_mode=%d, st_nlink=%"GF_PRI_NLINK", "
+				"st_uid=%d, st_gid=%d, st_rdev=%"GF_PRI_DEV", "
+				"st_size=%"PRId64", st_blksize=%"GF_PRI_BLKSIZE", "
+				"st_blocks=%"PRId64", st_atime=%s, st_mtime=%s, st_ctime=%s})",
+				frame->root->unique, op_ret, buf->st_dev, buf->st_ino, 
+				buf->st_mode, buf->st_nlink, buf->st_uid, buf->st_gid, 
+				buf->st_rdev, buf->st_size, buf->st_blksize, buf->st_blocks, 
+				atime_buf, mtime_buf, ctime_buf);
+		} else {
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, op_errno=%d)",
+				frame->root->unique, op_ret, op_errno);
+		}    
+	}
+  
+	STACK_UNWIND (frame, op_ret, op_errno, vector, count, buf);
+	return 0;
+}
+
+int32_t 
+trace_writev_cbk (call_frame_t *frame,
+		  void *cookie,
+		  xlator_t *this,
+		  int32_t op_ret,
+		  int32_t op_errno,
+		  struct stat *buf)
+{
+	char atime_buf[256], mtime_buf[256], ctime_buf[256];
+	ERR_EINVAL_NORETURN (!this);
+
+	if (trace_fop_names[GF_FOP_WRITE].enabled) {
+		if (op_ret >= 0) {
+			strftime (atime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_atime));
+			strftime (mtime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_mtime));
+			strftime (ctime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_ctime));
+
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, *buf {st_ino=%"PRIu64", "
+				"st_size=%"PRId64", st_blocks=%"PRId64", st_atime=%s, "
+				"st_mtime=%s, st_ctime=%s})",
+				frame->root->unique, op_ret, buf->st_ino, buf->st_size, 
+				buf->st_blocks, atime_buf, mtime_buf, ctime_buf);
+		} else {
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, op_errno=%d)",
+				frame->root->unique, op_ret, op_errno);
+		}    
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno, buf);
+	return 0;
+}
+
+int32_t 
+trace_getdents_cbk (call_frame_t *frame,
+		    void *cookie,
+		    xlator_t *this,
+		    int32_t op_ret,
+		    int32_t op_errno,
+		    dir_entry_t *entries,
+		    int32_t count)
+{
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_GETDENTS].enabled) {
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (op_ret=%d, op_errno=%d, count=%d)",
+			frame->root->unique, op_ret, op_errno, count);
+	}
+  
+	STACK_UNWIND (frame, op_ret, op_errno, entries, count);
+	return 0;
+}
+
+int32_t 
+trace_readdir_cbk (call_frame_t *frame,
+		   void *cookie,
+		   xlator_t *this,
+		   int32_t op_ret,
+		   int32_t op_errno,
+		   gf_dirent_t *buf)
+{
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_READDIR].enabled) {
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64" :(op_ret=%d, op_errno=%d)",
+			frame->root->unique, op_ret, op_errno);
+	}
+  
+	STACK_UNWIND (frame, op_ret, op_errno, buf);
+
+	return 0;
+}
+
+int32_t 
+trace_fsync_cbk (call_frame_t *frame,
+		 void *cookie,
+		 xlator_t *this,
+		 int32_t op_ret,
+		 int32_t op_errno)
+{
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_FSYNC].enabled) {
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (op_ret=%d, op_errno=%d)",
+			frame->root->unique, op_ret, op_errno);
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno);
+	return 0;
+}
+
+int32_t 
+trace_chown_cbk (call_frame_t *frame,
+		 void *cookie,
+		 xlator_t *this,
+		 int32_t op_ret,
+		 int32_t op_errno,
+		 struct stat *buf)
+{
+	char atime_buf[256], mtime_buf[256], ctime_buf[256];
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_CHOWN].enabled) {
+		if (op_ret >= 0) {
+			strftime (atime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_atime));
+			strftime (mtime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_mtime));
+			strftime (ctime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_ctime));
+    
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, *buf {st_ino=%"PRIu64", st_mode=%d, "
+				"st_uid=%d, st_gid=%d, st_atime=%s, st_mtime=%s, st_ctime=%s})",
+				frame->root->unique, op_ret, buf->st_ino, buf->st_mode, 
+				buf->st_uid, buf->st_gid, atime_buf, mtime_buf, ctime_buf);
+		} else {
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, op_errno=%d)",
+				frame->root->unique, op_ret, op_errno);
+		}    
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno, buf);
+	return 0;
+}
+
+int32_t 
+trace_chmod_cbk (call_frame_t *frame,
+		 void *cookie,
+		 xlator_t *this,
+		 int32_t op_ret,
+		 int32_t op_errno,
+		 struct stat *buf)
+{
+	char atime_buf[256], mtime_buf[256], ctime_buf[256];
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_CHMOD].enabled) {
+		if (op_ret >= 0) {
+			strftime (atime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_atime));
+			strftime (mtime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_mtime));
+			strftime (ctime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_ctime));
+    
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, *buf {st_ino=%"PRIu64", st_mode=%d, "
+				"st_atime=%s, st_mtime=%s, st_ctime=%s})",
+				frame->root->unique, op_ret, buf->st_ino, buf->st_mode, 
+				atime_buf, mtime_buf, ctime_buf);
+		} else {
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, op_errno=%d)",
+				frame->root->unique, op_ret, op_errno);
+		}    
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno, buf);
+	return 0;
+}
+
+int32_t 
+trace_fchmod_cbk (call_frame_t *frame,
+		  void *cookie,
+		  xlator_t *this,
+		  int32_t op_ret,
+		  int32_t op_errno,
+		  struct stat *buf)
+{
+	char atime_buf[256], mtime_buf[256], ctime_buf[256];
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_FCHMOD].enabled) {
+		if (op_ret >= 0) {
+			strftime (atime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_atime));
+			strftime (mtime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_mtime));
+			strftime (ctime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_ctime));
+    
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, *buf {st_ino=%"PRIu64", st_mode=%d, "
+				"st_atime=%s, st_mtime=%s, st_ctime=%s})",
+				frame->root->unique, op_ret, buf->st_ino, buf->st_mode, 
+				atime_buf, mtime_buf, ctime_buf);
+		} else {
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, op_errno=%d)",
+				frame->root->unique, op_ret, op_errno);
+		}    
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno, buf);
+	return 0;
+}
+
+int32_t 
+trace_fchown_cbk (call_frame_t *frame,
+		  void *cookie,
+		  xlator_t *this,
+		  int32_t op_ret,
+		  int32_t op_errno,
+		  struct stat *buf)
+{
+	char atime_buf[256], mtime_buf[256], ctime_buf[256];
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_FCHOWN].enabled) {  
+		if (op_ret >= 0) {
+			strftime (atime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_atime));
+			strftime (mtime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_mtime));
+			strftime (ctime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_ctime));
+    
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, *buf {st_ino=%"PRIu64", st_mode=%d, "
+				"st_uid=%d, st_gid=%d, st_atime=%s, st_mtime=%s, st_ctime=%s})",
+				frame->root->unique, op_ret, buf->st_ino, buf->st_mode, 
+				buf->st_uid, buf->st_gid, atime_buf, mtime_buf, ctime_buf);
+		} else {
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, op_errno=%d)",
+				frame->root->unique, op_ret, op_errno);
+		}    
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno, buf);
+	return 0;
+}
+
+int32_t 
+trace_unlink_cbk (call_frame_t *frame,
+		  void *cookie,
+		  xlator_t *this,
+		  int32_t op_ret,
+		  int32_t op_errno)
+{
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_UNLINK].enabled) {
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (op_ret=%d, op_errno=%d)",
+			frame->root->unique, op_ret, op_errno);
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno);
+	return 0;
+}
+
+int32_t 
+trace_rename_cbk (call_frame_t *frame,
+		  void *cookie,
+		  xlator_t *this,
+		  int32_t op_ret,
+		  int32_t op_errno,
+		  struct stat *buf)
+{
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_RENAME].enabled) {
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (op_ret=%d, op_errno=%d, buf {st_ino=%"PRIu64"})",
+			frame->root->unique, op_ret, op_errno, 
+			(buf? buf->st_ino : 0));
+	}
+  
+	STACK_UNWIND (frame, op_ret, op_errno, buf);
+	return 0;
+}
+
+int32_t 
+trace_readlink_cbk (call_frame_t *frame,
+		    void *cookie,
+		    xlator_t *this,
+		    int32_t op_ret,
+		    int32_t op_errno,
+		    const char *buf)
+{
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_READLINK].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (op_ret=%d, op_errno=%d, buf=%s)",
+			frame->root->unique, op_ret, op_errno, buf);
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno, buf);
+	return 0;
+}
+
+int32_t 
+trace_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 *xattr)
+{
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_LOOKUP].enabled) {
+		if (op_ret >= 0) {
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, ino=%"PRIu64", "
+				"*buf {st_dev=%"GF_PRI_DEV", st_ino=%"PRIu64", st_mode=%d, "
+				"st_nlink=%"GF_PRI_NLINK", st_uid=%d, st_gid=%d, "
+				"st_rdev=%"GF_PRI_DEV", st_size=%"PRId64", "
+				"st_blksize=%"GF_PRI_BLKSIZE", st_blocks=%"PRId64"})",
+				frame->root->unique, op_ret, inode->ino, buf->st_dev, buf->st_ino, 
+				buf->st_mode, buf->st_nlink, buf->st_uid, buf->st_gid, 
+				buf->st_rdev, buf->st_size, buf->st_blksize, buf->st_blocks);
+		} else {
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, op_errno=%d)",
+				frame->root->unique, op_ret, op_errno);
+		}    
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno, inode, buf, xattr);
+	return 0;
+}
+
+int32_t 
+trace_symlink_cbk (call_frame_t *frame,
+		   void *cookie,
+		   xlator_t *this,
+		   int32_t op_ret,
+		   int32_t op_errno,
+		   inode_t *inode,
+		   struct stat *buf)
+{
+	char atime_buf[256], mtime_buf[256], ctime_buf[256];
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_SYMLINK].enabled) {
+		if (op_ret >= 0) {
+			strftime (atime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_atime));
+			strftime (mtime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_mtime));
+			strftime (ctime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_ctime));
+    
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, ino=%"PRIu64", *buf {st_ino=%"PRIu64", "
+				"st_mode=%d, st_nlink=%"GF_PRI_NLINK", st_uid=%d, st_gid=%d, "
+				"st_size=%"PRId64", st_blocks=%"PRId64", st_atime=%s, "
+				"st_mtime=%s, st_ctime=%s})",
+				frame->root->unique, op_ret, inode->ino, buf->st_ino, 
+				buf->st_mode, buf->st_nlink, buf->st_uid, buf->st_gid, 
+				buf->st_size, buf->st_blocks, atime_buf, mtime_buf, ctime_buf);
+		} else {
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, op_errno=%d)",
+				frame->root->unique, op_ret, op_errno);
+		}    
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno, inode, buf);
+	return 0;
+}
+
+int32_t 
+trace_mknod_cbk (call_frame_t *frame,
+		 void *cookie,
+		 xlator_t *this,
+		 int32_t op_ret,
+		 int32_t op_errno,
+		 inode_t *inode,
+		 struct stat *buf)
+{
+	char atime_buf[256], mtime_buf[256], ctime_buf[256];
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_MKNOD].enabled) {  
+		if (op_ret >= 0) {
+			strftime (atime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_atime));
+			strftime (mtime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_mtime));
+			strftime (ctime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_ctime));
+    
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, ino=%"PRIu64", *buf {st_dev=%"GF_PRI_DEV
+				", st_ino=%"PRIu64", st_mode=%d, st_nlink=%"GF_PRI_NLINK", "
+				"st_uid=%d, st_gid=%d, st_rdev=%"GF_PRI_DEV", st_size=%"PRId64
+				", st_blksize=%"GF_PRI_BLKSIZE", st_blocks=%"PRId64", st_atime=%s, "
+				"st_mtime=%s, st_ctime=%s})",
+				frame->root->unique, op_ret, inode->ino, buf->st_dev, buf->st_ino, 
+				buf->st_mode, buf->st_nlink, buf->st_uid, buf->st_gid, 
+				buf->st_rdev, buf->st_size, buf->st_blksize, buf->st_blocks, 
+				atime_buf, mtime_buf, ctime_buf);
+		} else {
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, op_errno=%d)",
+				frame->root->unique, op_ret, op_errno);
+		}    
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno, inode, buf);
+	return 0;
+}
+  
+
+int32_t 
+trace_mkdir_cbk (call_frame_t *frame,
+		 void *cookie,
+		 xlator_t *this,
+		 int32_t op_ret,
+		 int32_t op_errno,
+		 inode_t *inode,
+		 struct stat *buf)
+{
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_MKDIR].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (op_ret=%d, op_errno=%d, ino=%"PRIu64"",
+			frame->root->unique, op_ret, op_errno, 
+			(inode? inode->ino : 0));
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno, inode, buf);
+	return 0;
+}
+  
+int32_t 
+trace_link_cbk (call_frame_t *frame,
+		void *cookie,
+		xlator_t *this,
+		int32_t op_ret,
+		int32_t op_errno,
+		inode_t *inode,
+		struct stat *buf)
+{
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_LINK].enabled) {
+		if (op_ret >= 0) {
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, ino=%"PRIu64", "
+				"*buf {st_nlink=%"GF_PRI_NLINK"})",
+				frame->root->unique, op_ret, inode->ino, buf->st_nlink);
+		} else {
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, op_errno=%d)",
+				frame->root->unique, op_ret, op_errno);
+		}    
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno, inode, buf);
+	return 0;
+}
+
+int32_t 
+trace_flush_cbk (call_frame_t *frame,
+		 void *cookie,
+		 xlator_t *this,
+		 int32_t op_ret,
+		 int32_t op_errno)
+{
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_FLUSH].enabled) {
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (op_ret=%d, op_errno=%d)",
+			frame->root->unique, op_ret, op_errno);
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno);
+	return 0;
+}
+
+
+int32_t 
+trace_opendir_cbk (call_frame_t *frame,
+		   void *cookie,
+		   xlator_t *this,
+		   int32_t op_ret,
+		   int32_t op_errno,
+		   fd_t *fd)
+{
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_OPENDIR].enabled) {
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (op_ret=%d, op_errno=%d, fd=%p)",
+			frame->root->unique, op_ret, op_errno, fd);
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno, fd);
+	return 0;
+}
+
+int32_t 
+trace_rmdir_cbk (call_frame_t *frame,
+		 void *cookie,
+		 xlator_t *this,
+		 int32_t op_ret,
+		 int32_t op_errno)
+{
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_RMDIR].enabled) {
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (op_ret=%d, op_errno=%d)",
+			frame->root->unique, op_ret, op_errno);
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno);
+	return 0;
+}
+
+int32_t 
+trace_truncate_cbk (call_frame_t *frame,
+		    void *cookie,
+		    xlator_t *this,
+		    int32_t op_ret,
+		    int32_t op_errno,
+		    struct stat *buf)
+{
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_TRUNCATE].enabled) {  
+		if (op_ret >= 0) {
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, *buf {st_size=%"PRId64", st_blksize=%"
+				GF_PRI_BLKSIZE", st_blocks=%"PRId64"})",
+				frame->root->unique, op_ret, buf->st_size, buf->st_blksize, 
+				buf->st_blocks);
+		} else {
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, op_errno=%d)",
+				frame->root->unique, op_ret, op_errno);
+		}    
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno, buf);
+	return 0;
+}
+
+int32_t 
+trace_utimens_cbk (call_frame_t *frame,
+		   void *cookie,
+		   xlator_t *this,
+		   int32_t op_ret,
+		   int32_t op_errno,
+		   struct stat *buf)
+{
+	char atime_buf[256], mtime_buf[256], ctime_buf[256];
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_UTIMENS].enabled) {
+		if (op_ret >= 0) {
+			strftime (atime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_atime));
+			strftime (mtime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_mtime));
+			strftime (ctime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_ctime));
+    
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, *buf {st_atime=%s, st_mtime=%s, "
+				"st_ctime=%s})",
+				frame->root->unique, op_ret, atime_buf, mtime_buf, ctime_buf);
+		} else {
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, op_errno=%d)",
+				frame->root->unique, op_ret, op_errno);
+		}    
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno, buf);
+	return 0;
+}
+
+int32_t 
+trace_statfs_cbk (call_frame_t *frame,
+		  void *cookie,
+		  xlator_t *this,
+		  int32_t op_ret,
+		  int32_t op_errno,
+		  struct statvfs *buf)
+{
+	ERR_EINVAL_NORETURN (!this);
+
+	if (trace_fop_names[GF_FOP_STATFS].enabled) {
+		if (op_ret >= 0) {
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": ({f_bsize=%lu, f_frsize=%lu, f_blocks=%"GF_PRI_FSBLK
+				", f_bfree=%"GF_PRI_FSBLK", f_bavail=%"GF_PRI_FSBLK", "
+				"f_files=%"GF_PRI_FSBLK", f_ffree=%"GF_PRI_FSBLK", f_favail=%"
+				GF_PRI_FSBLK", f_fsid=%lu, f_flag=%lu, f_namemax=%lu}) => ret=%d",
+				frame->root->unique, buf->f_bsize, buf->f_frsize, buf->f_blocks, 
+				buf->f_bfree, buf->f_bavail, buf->f_files, buf->f_ffree, 
+				buf->f_favail, buf->f_fsid, buf->f_flag, buf->f_namemax, op_ret);
+		} else {
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, op_errno=%d)",
+				frame->root->unique, op_ret, op_errno);
+		}    
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno, buf);
+	return 0;
+}
+
+int32_t 
+trace_setxattr_cbk (call_frame_t *frame,
+		    void *cookie,
+		    xlator_t *this,
+		    int32_t op_ret,
+		    int32_t op_errno)
+{
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_SETXATTR].enabled) {
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (op_ret=%d, op_errno=%d)",
+			frame->root->unique, op_ret, op_errno);
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno);
+	return 0;
+}
+
+int32_t 
+trace_getxattr_cbk (call_frame_t *frame,
+		    void *cookie,
+		    xlator_t *this,
+		    int32_t op_ret,
+		    int32_t op_errno,
+		    dict_t *dict)
+{
+	ERR_EINVAL_NORETURN (!this || !dict);
+
+	if (trace_fop_names[GF_FOP_GETXATTR].enabled) {
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (op_ret=%d, op_errno=%d, dict=%p)",
+			frame->root->unique, op_ret, op_errno, dict);
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno, dict);
+	return 0;
+}
+
+int32_t 
+trace_removexattr_cbk (call_frame_t *frame,
+		       void *cookie,
+		       xlator_t *this,
+		       int32_t op_ret,
+		       int32_t op_errno)
+{
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_REMOVEXATTR].enabled) {
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (op_ret=%d, op_errno=%d)",
+			frame->root->unique, op_ret, op_errno);
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno);
+	return 0;
+}
+
+
+int32_t 
+trace_fsyncdir_cbk (call_frame_t *frame,
+		    void *cookie,
+		    xlator_t *this,
+		    int32_t op_ret,
+		    int32_t op_errno)
+{
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_FSYNCDIR].enabled) {
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (op_ret=%d, op_errno=%d)",
+			frame->root->unique, op_ret, op_errno);
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno);
+	return 0;
+}
+
+int32_t 
+trace_access_cbk (call_frame_t *frame,
+		  void *cookie,
+		  xlator_t *this,
+		  int32_t op_ret,
+		  int32_t op_errno)
+{
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_ACCESS].enabled) {
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (op_ret=%d, op_errno=%d)",
+			frame->root->unique, op_ret, op_errno);
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno);
+	return 0;
+}
+
+int32_t 
+trace_ftruncate_cbk (call_frame_t *frame,
+		     void *cookie,
+		     xlator_t *this,
+		     int32_t op_ret,
+		     int32_t op_errno,
+		     struct stat *buf)
+{
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_FTRUNCATE].enabled) {
+		if (op_ret >= 0) {
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, *buf {st_size=%"PRId64", "
+				"st_blksize=%"GF_PRI_BLKSIZE", st_blocks=%"PRId64"})",
+				frame->root->unique, op_ret, buf->st_size, buf->st_blksize, 
+				buf->st_blocks);
+		} else {
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, op_errno=%d)",
+				frame->root->unique, op_ret, op_errno);
+		}    
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno, buf);
+	return 0;
+}
+
+int32_t 
+trace_fstat_cbk (call_frame_t *frame,
+		 void *cookie,
+		 xlator_t *this,
+		 int32_t op_ret,
+		 int32_t op_errno,
+		 struct stat *buf)
+{
+	char atime_buf[256], mtime_buf[256], ctime_buf[256];
+	ERR_EINVAL_NORETURN (!this );
+  
+	if (trace_fop_names[GF_FOP_FSTAT].enabled) {
+		if (op_ret >= 0) {
+			strftime (atime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_atime));
+			strftime (mtime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_mtime));
+			strftime (ctime_buf, 256, "[%b %d %H:%M:%S]", localtime (&buf->st_ctime));
+    
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, *buf {st_dev=%"GF_PRI_DEV", "
+				"st_ino=%"PRIu64", st_mode=%d, st_nlink=%"GF_PRI_NLINK", "
+				"st_uid=%d, st_gid=%d, st_rdev=%"GF_PRI_DEV", st_size=%"PRId64", "
+				"st_blksize=%"GF_PRI_BLKSIZE", st_blocks=%"PRId64", st_atime=%s, "
+				"st_mtime=%s, st_ctime=%s})",
+				frame->root->unique, op_ret, buf->st_dev, buf->st_ino, 
+				buf->st_mode, buf->st_nlink, buf->st_uid, buf->st_gid, 
+				buf->st_rdev, buf->st_size, buf->st_blksize, 
+				buf->st_blocks, atime_buf, mtime_buf, ctime_buf);
+		} else {
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, op_errno=%d)",
+				frame->root->unique, op_ret, op_errno);
+		}    
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno, buf);
+	return 0;
+}
+
+int32_t 
+trace_lk_cbk (call_frame_t *frame,
+	      void *cookie,
+	      xlator_t *this,
+	      int32_t op_ret,
+	      int32_t op_errno,
+	      struct flock *lock)
+{
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_LK].enabled) {
+		if (op_ret >= 0) {
+			gf_log (this->name, GF_LOG_NORMAL,
+				"%"PRId64": (op_ret=%d, {l_type=%d, l_whence=%d, "
+				"l_start=%"PRId64", l_len=%"PRId64", l_pid=%u})",
+				frame->root->unique, op_ret, lock->l_type, lock->l_whence, 
+				lock->l_start, lock->l_len, lock->l_pid);
+		} else {
+			gf_log (this->name, GF_LOG_NORMAL, 
+				"%"PRId64": (op_ret=%d, op_errno=%d)",
+				frame->root->unique, op_ret, op_errno);
+		}    
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno, lock);
+	return 0;
+}
+
+
+int32_t 
+trace_setdents_cbk (call_frame_t *frame,
+		    void *cookie,
+		    xlator_t *this,
+		    int32_t op_ret,
+		    int32_t op_errno)
+{
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_SETDENTS].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL,
+			"%"PRId64": op_ret=%d, op_errno=%d",
+			frame->root->unique, op_ret, op_errno);
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno);
+	return 0;
+}
+
+int32_t 
+trace_entrylk_cbk (call_frame_t *frame,
+		     void *cookie,
+		     xlator_t *this,
+		     int32_t op_ret,
+		     int32_t op_errno)
+{
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_ENTRYLK].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL,
+			"%"PRId64": op_ret=%d, op_errno=%d",
+			frame->root->unique, op_ret, op_errno);
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno);
+	return 0;
+}
+
+
+int32_t 
+trace_xattrop_cbk (call_frame_t *frame,
+		   void *cookie,
+		   xlator_t *this,
+		   int32_t op_ret,
+		   int32_t op_errno,
+		   dict_t *dict)
+{
+	ERR_EINVAL_NORETURN (!this || !dict);
+
+	if (trace_fop_names[GF_FOP_XATTROP].enabled) {
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (op_ret=%d, op_errno=%d)",
+			frame->root->unique, op_ret, op_errno);
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno, dict);
+	return 0;
+}
+
+int32_t 
+trace_fxattrop_cbk (call_frame_t *frame,
+		    void *cookie,
+		    xlator_t *this,
+		    int32_t op_ret,
+		    int32_t op_errno,
+		    dict_t *dict)
+{
+	ERR_EINVAL_NORETURN (!this || !dict);
+
+	if (trace_fop_names[GF_FOP_FXATTROP].enabled) {
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (op_ret=%d, op_errno=%d)",
+			frame->root->unique, op_ret, op_errno);
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno, dict);
+	return 0;
+}
+
+int32_t 
+trace_inodelk_cbk (call_frame_t *frame,
+		   void *cookie,
+		   xlator_t *this,
+		   int32_t op_ret,
+		   int32_t op_errno)
+{
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_INODELK].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL,
+			"%"PRId64": op_ret=%d, op_errno=%d",
+			frame->root->unique, op_ret, op_errno);
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno);
+	return 0;
+}
+
+
+int32_t
+trace_entrylk (call_frame_t *frame, xlator_t *this,
+	       loc_t *loc, const char *basename,
+	       entrylk_cmd cmd, entrylk_type type)
+{
+	ERR_EINVAL_NORETURN (!this || !loc || !basename);
+
+	if (trace_fop_names[GF_FOP_ENTRYLK].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (loc= {path=%s, ino=%"PRIu64"} basename=%s, cmd=%s, type=%s)",
+			frame->root->unique, loc->path, loc->inode->ino, basename, 
+			((cmd == ENTRYLK_LOCK) ? "ENTRYLK_LOCK" : "ENTRYLK_UNLOCK"), 
+			((type == ENTRYLK_RDLCK) ? "ENTRYLK_RDLCK" : "ENTRYLK_WRLCK"));
+	}
+
+	STACK_WIND (frame, 
+		    trace_entrylk_cbk,
+		    FIRST_CHILD (this),
+		    FIRST_CHILD (this)->fops->entrylk,
+		    loc, basename, cmd, type);
+	return 0;
+}
+
+int32_t
+trace_inodelk (call_frame_t *frame,
+	       xlator_t *this,
+	       loc_t *loc, int32_t cmd, struct flock *flock)
+{
+	ERR_EINVAL_NORETURN (!this || !loc);
+
+	if (trace_fop_names[GF_FOP_INODELK].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (loc {path=%s, ino=%"PRIu64"}, cmd=%s)",
+			frame->root->unique, loc->path, loc->inode->ino, 
+			((cmd == F_SETLK)? "F_SETLK" : "unknown"));
+	}
+
+	STACK_WIND (frame, 
+		    trace_inodelk_cbk,
+		    FIRST_CHILD (this),
+		    FIRST_CHILD (this)->fops->inodelk,
+		    loc, cmd, flock);
+	return 0;
+}
+
+
+int32_t 
+trace_finodelk_cbk (call_frame_t *frame,
+		    void *cookie,
+		    xlator_t *this,
+		    int32_t op_ret,
+		    int32_t op_errno)
+{
+	ERR_EINVAL_NORETURN (!this );
+
+	if (trace_fop_names[GF_FOP_FINODELK].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL,
+			"%"PRId64": op_ret=%d, op_errno=%d",
+			frame->root->unique, op_ret, op_errno);
+	}
+
+	STACK_UNWIND (frame, op_ret, op_errno);
+	return 0;
+}
+
+int32_t
+trace_finodelk (call_frame_t *frame,
+		xlator_t *this,
+		fd_t *fd, int32_t cmd, struct flock *flock)
+{
+	ERR_EINVAL_NORETURN (!this || !fd);
+
+	if (trace_fop_names[GF_FOP_FINODELK].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (fd=%p, cmd=%s)",
+			frame->root->unique, fd, 
+			((cmd == F_SETLK) ? "F_SETLK" : "unknown"));
+	}
+
+	STACK_WIND (frame, 
+		    trace_finodelk_cbk,
+		    FIRST_CHILD (this),
+		    FIRST_CHILD (this)->fops->finodelk,
+		    fd, cmd, flock);
+	return 0;
+}
+
+
+int32_t
+trace_xattrop (call_frame_t *frame,
+	       xlator_t *this,
+	       loc_t *loc,
+	       gf_xattrop_flags_t flags,
+	       dict_t *dict)
+{
+	ERR_EINVAL_NORETURN (!this || !loc);
+
+	if (trace_fop_names[GF_FOP_XATTROP].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (path=%s, ino=%"PRIu64" flags=%d)",
+			frame->root->unique, loc->path, loc->inode->ino, flags);
+			
+	}
+  
+	STACK_WIND (frame, trace_xattrop_cbk,
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->xattrop, 
+		    loc, flags, dict);
+
+	return 0;
+}
+
+int32_t
+trace_fxattrop (call_frame_t *frame,
+		xlator_t *this,
+		fd_t *fd,
+		gf_xattrop_flags_t flags,
+		dict_t *dict)
+{
+	ERR_EINVAL_NORETURN (!this || !fd);
+
+	if (trace_fop_names[GF_FOP_FXATTROP].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (fd=%p, flags=%d)",
+			frame->root->unique, fd, flags);
+			
+	}
+  
+	STACK_WIND (frame, trace_fxattrop_cbk,
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->fxattrop, 
+		    fd, flags, dict);
+
+	return 0;
+}
+
+int32_t 
+trace_lookup (call_frame_t *frame,
+	      xlator_t *this,
+	      loc_t *loc,
+	      dict_t *xattr_req)
+{
+	ERR_EINVAL_NORETURN (!this || !loc);
+
+	if (trace_fop_names[GF_FOP_LOOKUP].enabled) {  
+		/* TODO: print all the keys mentioned in xattr_req */
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (loc {path=%s, ino=%"PRIu64"})",
+			frame->root->unique, loc->path,
+			loc->inode->ino);
+	}
+  
+	STACK_WIND (frame, trace_lookup_cbk,
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->lookup, 
+		    loc, xattr_req);
+
+	return 0;
+}
+
+int32_t 
+trace_stat (call_frame_t *frame,
+	    xlator_t *this,
+	    loc_t *loc)
+{
+	ERR_EINVAL_NORETURN (!this || !loc );
+
+
+	if (trace_fop_names[GF_FOP_STAT].enabled) {
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (loc {path=%s, ino=%"PRIu64"})",
+			frame->root->unique, loc->path, loc->inode->ino);
+	}
+
+	STACK_WIND (frame, 
+		    trace_stat_cbk, 
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->stat, 
+		    loc);
+  
+	return 0;
+}
+
+int32_t 
+trace_readlink (call_frame_t *frame,
+		xlator_t *this,
+		loc_t *loc,
+		size_t size)
+{
+	ERR_EINVAL_NORETURN (!this || !loc || (size < 1));
+
+	if (trace_fop_names[GF_FOP_READLINK].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (loc {path=%s, ino=%"PRIu64"}, size=%"GF_PRI_SIZET")",
+			frame->root->unique, loc->path, loc->inode->ino, size);
+	}
+
+	STACK_WIND (frame, 
+		    trace_readlink_cbk,
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->readlink, 
+		    loc, 
+		    size);
+  
+	return 0;
+}
+
+int32_t 
+trace_mknod (call_frame_t *frame,
+	     xlator_t *this,
+	     loc_t *loc,
+	     mode_t mode,
+	     dev_t dev)
+{
+	ERR_EINVAL_NORETURN (!this || !loc->path);
+
+	if (trace_fop_names[GF_FOP_MKNOD].enabled) {
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (loc {path=%s, ino=%"PRIu64"}, mode=%d, dev=%"GF_PRI_DEV")",
+			frame->root->unique, loc->path, loc->inode->ino, mode, dev);
+	}
+
+	STACK_WIND (frame, 
+		    trace_mknod_cbk,
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->mknod, 
+		    loc,
+		    mode, 
+		    dev);
+  
+	return 0;
+}
+
+int32_t 
+trace_mkdir (call_frame_t *frame,
+	     xlator_t *this,
+	     loc_t *loc,
+	     mode_t mode)
+{
+	ERR_EINVAL_NORETURN (!this || !loc || !loc->path);
+
+	if (trace_fop_names[GF_FOP_MKDIR].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (path=%s, ino=%"PRIu64", mode=%d)",
+			frame->root->unique, loc->path, 
+			((loc->inode)? loc->inode->ino : 0), mode);
+	}
+  
+	STACK_WIND (frame, 
+		    trace_mkdir_cbk,
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->mkdir, 
+		    loc,
+		    mode);
+	return 0;
+}
+
+int32_t 
+trace_unlink (call_frame_t *frame,
+	      xlator_t *this,
+	      loc_t *loc)
+{
+	ERR_EINVAL_NORETURN (!this || !loc);
+
+	if (trace_fop_names[GF_FOP_UNLINK].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (loc {path=%s, ino=%"PRIu64"})",
+			frame->root->unique, loc->path, loc->inode->ino);
+	}
+
+	STACK_WIND (frame, 
+		    trace_unlink_cbk, 
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->unlink, 
+		    loc);
+	return 0;
+}
+
+int32_t 
+trace_rmdir (call_frame_t *frame,
+	     xlator_t *this,
+	     loc_t *loc)
+{
+	ERR_EINVAL_NORETURN (!this || !loc);
+
+	if (trace_fop_names[GF_FOP_RMDIR].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (loc {path=%s, ino=%"PRIu64"})",
+			frame->root->unique, loc->path, loc->inode->ino);
+	}
+
+	STACK_WIND (frame, 
+		    trace_rmdir_cbk,
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->rmdir, 
+		    loc);
+  
+	return 0;
+}
+
+int32_t 
+trace_symlink (call_frame_t *frame,
+	       xlator_t *this,
+	       const char *linkpath,
+	       loc_t *loc)
+{
+	ERR_EINVAL_NORETURN (!this || !linkpath || !loc || !loc->path);
+
+	if (trace_fop_names[GF_FOP_SYMLINK].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (linkpath=%s, loc {path=%s, ino=%"PRIu64"})",
+			frame->root->unique, linkpath, loc->path, 
+			((loc->inode)? loc->inode->ino : 0));
+	}
+
+	STACK_WIND (frame, 
+		    trace_symlink_cbk,
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->symlink, 
+		    linkpath,
+		    loc);
+  
+	return 0;
+}
+
+int32_t 
+trace_rename (call_frame_t *frame,
+	      xlator_t *this,
+	      loc_t *oldloc,
+	      loc_t *newloc)
+{  
+	ERR_EINVAL_NORETURN (!this || !oldloc || !newloc);
+
+	if (trace_fop_names[GF_FOP_RENAME].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (oldloc {path=%s, ino=%"PRIu64"}, "
+			"newloc{path=%s, ino=%"PRIu64"})",
+			frame->root->unique, oldloc->path, oldloc->ino, 
+			newloc->path, newloc->ino);
+	}
+
+	STACK_WIND (frame, 
+		    trace_rename_cbk,
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->rename, 
+		    oldloc,
+		    newloc);
+  
+	return 0;
+}
+
+int32_t 
+trace_link (call_frame_t *frame,
+	    xlator_t *this,
+	    loc_t *oldloc,
+	    loc_t *newloc)
+{
+	ERR_EINVAL_NORETURN (!this || !oldloc || !newloc);
+
+	if (trace_fop_names[GF_FOP_LINK].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (oldloc {path=%s, ino=%"PRIu64"}, "
+			"newloc {path=%s, ino=%"PRIu64"})",
+			frame->root->unique, oldloc->path, oldloc->inode->ino, 
+			newloc->path, newloc->inode->ino);
+	}
+
+	STACK_WIND (frame, 
+		    trace_link_cbk, 
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->link, 
+		    oldloc,
+		    newloc);
+	return 0;
+}
+
+int32_t 
+trace_chmod (call_frame_t *frame,
+	     xlator_t *this,
+	     loc_t *loc,
+	     mode_t mode)
+{
+	ERR_EINVAL_NORETURN (!this || !loc);
+
+	if (trace_fop_names[GF_FOP_CHMOD].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (loc {path=%s, ino=%"PRIu64"}, mode=%o)",
+			frame->root->unique, loc->path, loc->inode->ino, mode);
+	}
+
+	STACK_WIND (frame, 
+		    trace_chmod_cbk, 
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->chmod, 
+		    loc,
+		    mode);
+  
+	return 0;
+}
+
+int32_t 
+trace_chown (call_frame_t *frame,
+	     xlator_t *this,
+	     loc_t *loc,
+	     uid_t uid,
+	     gid_t gid)
+{
+	ERR_EINVAL_NORETURN (!this || !loc);
+
+	if (trace_fop_names[GF_FOP_CHOWN].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (loc {path=%s, ino=%"PRIu64"}, uid=%d, gid=%d)",
+			frame->root->unique, loc->path, loc->inode->ino, uid, gid);
+	}
+
+	STACK_WIND (frame, 
+		    trace_chown_cbk, 
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->chown, 
+		    loc,
+		    uid,
+		    gid);
+
+	return 0;
+}
+
+int32_t 
+trace_truncate (call_frame_t *frame,
+		xlator_t *this,
+		loc_t *loc,
+		off_t offset)
+{
+	ERR_EINVAL_NORETURN (!this || !loc);
+
+	if (trace_fop_names[GF_FOP_TRUNCATE].enabled) { 
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (loc {path=%s, ino=%"PRIu64"}, offset=%"PRId64")",
+			frame->root->unique, loc->path, loc->inode->ino, offset);
+	}
+
+	STACK_WIND (frame, 
+		    trace_truncate_cbk, 
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->truncate, 
+		    loc,
+		    offset);
+  
+	return 0;
+}
+
+int32_t 
+trace_utimens (call_frame_t *frame,
+	       xlator_t *this,
+	       loc_t *loc,
+	       struct timespec tv[2])
+{
+	char actime_str[256];
+	char modtime_str[256];
+  
+	ERR_EINVAL_NORETURN (!this || !loc || !tv);
+
+	if (trace_fop_names[GF_FOP_UTIMENS].enabled) {  
+		strftime (actime_str, 256, "[%b %d %H:%M:%S]", localtime (&tv[0].tv_sec));
+		strftime (modtime_str, 256, "[%b %d %H:%M:%S]", localtime (&tv[1].tv_sec));
+
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (loc {path=%s, ino=%"PRIu64"}, "
+			"*tv=%p {actime=%s, modtime=%s})",
+			frame->root->unique, loc->path, loc->inode->ino, 
+			tv, actime_str, modtime_str);
+	}
+
+	STACK_WIND (frame, 
+		    trace_utimens_cbk, 
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->utimens, 
+		    loc,
+		    tv);
+
+	return 0;
+}
+
+int32_t 
+trace_open (call_frame_t *frame,
+	    xlator_t *this,
+	    loc_t *loc,
+	    int32_t flags,
+	    fd_t *fd)
+{
+	ERR_EINVAL_NORETURN (!this || !loc);
+
+	if (trace_fop_names[GF_FOP_OPEN].enabled) {
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (loc {path=%s, ino=%"PRIu64"}, flags=%d, fd=%p)",
+			frame->root->unique, loc->path, loc->inode->ino, flags, fd);
+	}
+
+	STACK_WIND (frame, 
+		    trace_open_cbk, 
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->open, 
+		    loc,
+		    flags,
+		    fd);
+	return 0;
+}
+
+int32_t 
+trace_create (call_frame_t *frame,
+	      xlator_t *this,
+	      loc_t *loc,
+	      int32_t flags,
+	      mode_t mode,
+	      fd_t *fd)
+{
+	ERR_EINVAL_NORETURN (!this || !loc->path);
+
+	if (trace_fop_names[GF_FOP_CREATE].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (loc {path=%s, ino=%"PRIu64"}, flags=0%o mode=0%o)",
+			frame->root->unique, loc->path, loc->inode->ino, flags, mode);
+	}
+
+	STACK_WIND (frame, 
+		    trace_create_cbk, 
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->create, 
+		    loc,
+		    flags,
+		    mode,
+		    fd);
+	return 0;
+}
+
+int32_t 
+trace_readv (call_frame_t *frame,
+	     xlator_t *this,
+	     fd_t *fd,
+	     size_t size,
+	     off_t offset)
+{
+	ERR_EINVAL_NORETURN (!this || !fd || (size < 1));
+
+	if (trace_fop_names[GF_FOP_READ].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (*fd=%p, size=%"GF_PRI_SIZET", offset=%"PRId64")",
+			frame->root->unique, fd, size, offset);
+	}
+
+	STACK_WIND (frame, 
+		    trace_readv_cbk, 
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->readv,
+		    fd,
+		    size,
+		    offset);
+	return 0;
+}
+
+int32_t 
+trace_writev (call_frame_t *frame,
+	      xlator_t *this,
+	      fd_t *fd,
+	      struct iovec *vector,
+	      int32_t count,
+	      off_t offset)
+{
+	ERR_EINVAL_NORETURN (!this || !fd || !vector || (count < 1));
+
+	if (trace_fop_names[GF_FOP_WRITE].enabled) {
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (*fd=%p, *vector=%p, count=%d, offset=%"PRId64")",
+			frame->root->unique, fd, vector, count, offset);
+	}
+
+	STACK_WIND (frame, 
+		    trace_writev_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->writev, 
+		    fd,
+		    vector,
+		    count,
+		    offset);
+	return 0;
+}
+
+int32_t 
+trace_statfs (call_frame_t *frame,
+	      xlator_t *this,
+	      loc_t *loc)
+{
+	ERR_EINVAL_NORETURN (!this || !loc);
+
+	if (trace_fop_names[GF_FOP_STATFS].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (loc {path=%s, ino=%"PRIu64"})",
+			frame->root->unique, loc->path, 
+			((loc->inode)? loc->inode->ino : 0));
+	}
+
+	STACK_WIND (frame, 
+		    trace_statfs_cbk, 
+		    FIRST_CHILD(this), FIRST_CHILD(this)->fops->statfs, 
+		    loc);
+	return 0; 
+}
+
+int32_t 
+trace_flush (call_frame_t *frame,
+	     xlator_t *this,
+	     fd_t *fd)
+{
+	ERR_EINVAL_NORETURN (!this || !fd);
+
+	if (trace_fop_names[GF_FOP_FLUSH].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (*fd=%p)", 
+			frame->root->unique, fd);
+	}
+
+	STACK_WIND (frame, 
+		    trace_flush_cbk, 
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->flush, 
+		    fd);
+	return 0;
+}
+
+
+int32_t 
+trace_fsync (call_frame_t *frame,
+	     xlator_t *this,
+	     fd_t *fd,
+	     int32_t flags)
+{
+	ERR_EINVAL_NORETURN (!this || !fd);
+
+	if (trace_fop_names[GF_FOP_FSYNC].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (flags=%d, *fd=%p)", 
+			frame->root->unique, flags, fd);
+	}
+
+	STACK_WIND (frame, 
+		    trace_fsync_cbk, 
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->fsync, 
+		    fd,
+		    flags);
+	return 0;
+}
+
+int32_t 
+trace_setxattr (call_frame_t *frame,
+		xlator_t *this,
+		loc_t *loc,
+		dict_t *dict,
+		int32_t flags)
+{
+	ERR_EINVAL_NORETURN (!this || !loc || !dict);
+
+	if (trace_fop_names[GF_FOP_SETXATTR].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (loc {path=%s, ino=%"PRIu64"}, dict=%p, flags=%d)",
+			frame->root->unique, loc->path, 
+			((loc->inode)? loc->inode->ino : 0), dict, flags);
+	}
+
+	STACK_WIND (frame, 
+		    trace_setxattr_cbk, 
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->setxattr, 
+		    loc,
+		    dict,
+		    flags);
+	return 0;
+}
+
+int32_t 
+trace_getxattr (call_frame_t *frame,
+		xlator_t *this,
+		loc_t *loc,
+		const char *name)
+{
+	ERR_EINVAL_NORETURN (!this || !loc);
+
+	if (trace_fop_names[GF_FOP_GETXATTR].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (loc {path=%s, ino=%"PRIu64"}), name=%s",
+			frame->root->unique, loc->path, 
+			((loc->inode)? loc->inode->ino : 0), name);
+	}
+
+	STACK_WIND (frame, 
+		    trace_getxattr_cbk, 
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->getxattr,
+		    loc,
+		    name);
+	return 0;
+}
+
+int32_t 
+trace_removexattr (call_frame_t *frame,
+		   xlator_t *this,
+		   loc_t *loc,
+		   const char *name)
+{
+	ERR_EINVAL_NORETURN (!this || !loc || !name);
+
+	if (trace_fop_names[GF_FOP_REMOVEXATTR].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (loc {path=%s, ino=%"PRIu64"}, name=%s)",
+			frame->root->unique, loc->path, 
+			((loc->inode)? loc->inode->ino : 0), name);
+	}
+
+	STACK_WIND (frame, 
+		    trace_removexattr_cbk, 
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->removexattr, 
+		    loc,
+		    name);
+
+	return 0;
+}
+
+int32_t 
+trace_opendir (call_frame_t *frame,
+	       xlator_t *this,
+	       loc_t *loc,
+	       fd_t *fd)
+{
+	ERR_EINVAL_NORETURN (!this || !loc );
+
+	if (trace_fop_names[GF_FOP_OPENDIR].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64":( loc {path=%s, ino=%"PRIu64"}, fd=%p)",
+			frame->root->unique, loc->path, loc->inode->ino, fd);
+	}
+
+	STACK_WIND (frame, 
+		    trace_opendir_cbk, 
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->opendir, 
+		    loc,
+		    fd);
+	return 0;
+}
+
+int32_t 
+trace_getdents (call_frame_t *frame,
+		xlator_t *this,
+		fd_t *fd,
+		size_t size,
+		off_t offset,
+		int32_t flag)
+{
+	ERR_EINVAL_NORETURN (!this || !fd);  
+
+	if (trace_fop_names[GF_FOP_GETDENTS].enabled) {
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (fd=%p, size=%"GF_PRI_SIZET", offset=%"PRId64", flag=0x%x)",
+			frame->root->unique, fd, size, offset, flag);
+	}
+
+	STACK_WIND (frame, 
+		    trace_getdents_cbk, 
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->getdents, 
+		    fd,
+		    size, 
+		    offset, 
+		    flag);
+	return 0;
+}
+
+
+int32_t 
+trace_readdir (call_frame_t *frame,
+	       xlator_t *this,
+	       fd_t *fd,
+	       size_t size,
+	       off_t offset)
+{
+	ERR_EINVAL_NORETURN (!this || !fd);  
+
+	if (trace_fop_names[GF_FOP_READDIR].enabled) {
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (fd=%p, size=%"GF_PRI_SIZET", offset=%"PRId64")",
+			frame->root->unique, fd, size, offset);
+	}
+
+	STACK_WIND (frame, 
+		    trace_readdir_cbk, 
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->readdir,
+		    fd,
+		    size, 
+		    offset);
+
+	return 0;
+}
+
+
+int32_t 
+trace_fsyncdir (call_frame_t *frame,
+		xlator_t *this,
+		fd_t *fd,
+		int32_t datasync)
+{
+	ERR_EINVAL_NORETURN (!this || !fd);
+
+	if (trace_fop_names[GF_FOP_FSYNCDIR].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (datasync=%d, *fd=%p)", 
+			frame->root->unique, datasync, fd);
+	}
+
+	STACK_WIND (frame, 
+		    trace_fsyncdir_cbk, 
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->fsyncdir, 
+		    fd,
+		    datasync);
+	return 0;
+}
+
+int32_t 
+trace_access (call_frame_t *frame,
+	      xlator_t *this,
+	      loc_t *loc,
+	      int32_t mask)
+{
+	ERR_EINVAL_NORETURN (!this || !loc);
+
+	if (trace_fop_names[GF_FOP_ACCESS].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (*loc {path=%s, ino=%"PRIu64"}, mask=0%o)",
+			frame->root->unique, loc->path, 
+			((loc->inode)? loc->inode->ino : 0), mask);
+	}
+
+	STACK_WIND (frame, 
+		    trace_access_cbk, 
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->access, 
+		    loc,
+		    mask);
+	return 0;
+}
+
+int32_t 
+trace_ftruncate (call_frame_t *frame,
+		 xlator_t *this,
+		 fd_t *fd,
+		 off_t offset)
+{
+	ERR_EINVAL_NORETURN (!this || !fd);
+
+	if (trace_fop_names[GF_FOP_FTRUNCATE].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (offset=%"PRId64", *fd=%p)", 
+			frame->root->unique, offset, fd);
+	}
+
+	STACK_WIND (frame, 
+		    trace_ftruncate_cbk, 
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->ftruncate, 
+		    fd,
+		    offset);
+
+	return 0;
+}
+
+int32_t 
+trace_fchown (call_frame_t *frame,
+	      xlator_t *this,
+	      fd_t *fd,
+	      uid_t uid,
+	      gid_t gid)
+{
+	ERR_EINVAL_NORETURN (!this || !fd);
+
+	if (trace_fop_names[GF_FOP_FCHOWN].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (*fd=%p, uid=%d, gid=%d)", 
+			frame->root->unique, fd, uid, gid);
+	}
+
+	STACK_WIND (frame, 
+		    trace_fchown_cbk, 
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->fchown, 
+		    fd,
+		    uid,
+		    gid);
+	return 0;
+}
+
+int32_t 
+trace_fchmod (call_frame_t *frame,
+	      xlator_t *this,
+	      fd_t *fd,
+	      mode_t mode)
+{
+	ERR_EINVAL_NORETURN (!this || !fd);
+
+	if (trace_fop_names[GF_FOP_FCHMOD].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (mode=%o, *fd=%p)", 
+			frame->root->unique, mode, fd);
+	}
+
+	STACK_WIND (frame, 
+		    trace_fchmod_cbk, 
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->fchmod, 
+		    fd,
+		    mode);
+	return 0;
+}
+
+int32_t 
+trace_fstat (call_frame_t *frame,
+	     xlator_t *this,
+	     fd_t *fd)
+{
+	ERR_EINVAL_NORETURN (!this || !fd);
+
+	if (trace_fop_names[GF_FOP_FSTAT].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (*fd=%p)", 
+			frame->root->unique, fd);
+	}
+
+	STACK_WIND (frame, 
+		    trace_fstat_cbk, 
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->fstat, 
+		    fd);
+	return 0;
+}
+
+int32_t 
+trace_lk (call_frame_t *frame,
+	  xlator_t *this,
+	  fd_t *fd,
+	  int32_t cmd,
+	  struct flock *lock)
+{
+	ERR_EINVAL_NORETURN (!this || !fd);
+
+	if (trace_fop_names[GF_FOP_LK].enabled) {  
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (*fd=%p, cmd=%d, lock {l_type=%d, l_whence=%d, "
+			"l_start=%"PRId64", l_len=%"PRId64", l_pid=%u})",
+			frame->root->unique, fd, cmd, lock->l_type, lock->l_whence, 
+			lock->l_start, lock->l_len, lock->l_pid);
+	}
+
+	STACK_WIND (frame, 
+		    trace_lk_cbk, 
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->lk, 
+		    fd,
+		    cmd,
+		    lock);
+	return 0;
+}
+
+int32_t 
+trace_setdents (call_frame_t *frame,
+		xlator_t *this,
+		fd_t *fd,
+		int32_t flags,
+		dir_entry_t *entries,
+		int32_t count)
+{
+	if (trace_fop_names[GF_FOP_SETDENTS].enabled) {
+		gf_log (this->name, GF_LOG_NORMAL, 
+			"%"PRId64": (*fd=%p, flags=%d, count=%d", 
+			frame->root->unique, fd, flags, count);
+	}
+
+	STACK_WIND (frame, 
+		    trace_setdents_cbk, 
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->setdents, 
+		    fd,
+		    flags,
+		    entries,
+		    count);
+	return 0;
+}
+
+
+int32_t
+trace_checksum_cbk (call_frame_t *frame,
+		    void *cookie,
+		    xlator_t *this,
+		    int32_t op_ret,
+		    int32_t op_errno,
+		    uint8_t *fchecksum,
+		    uint8_t *dchecksum)
+{
+	gf_log (this->name, GF_LOG_NORMAL, 
+		"%"PRId64": op_ret (%d), op_errno(%d)", 
+		frame->root->unique, op_ret, op_errno);
+
+	STACK_UNWIND (frame, op_ret, op_errno, fchecksum, dchecksum);
+
+	return 0;
+}
+
+int32_t
+trace_checksum (call_frame_t *frame,
+		xlator_t *this,
+		loc_t *loc,
+		int32_t flag)
+{
+	gf_log (this->name, GF_LOG_NORMAL, 
+		"%"PRId64": loc->path (%s) flag (%d)", 
+		frame->root->unique, loc->path, flag);
+  
+	STACK_WIND (frame,
+		    trace_checksum_cbk,
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->fops->checksum, 
+		    loc,
+		    flag);
+
+	return 0;
+}
+
+
+int32_t 
+trace_stats_cbk (call_frame_t *frame,
+		 void *cookie,
+		 xlator_t *this,
+		 int32_t op_ret,
+		 int32_t op_errno,
+		 struct xlator_stats *stats)
+{
+	gf_log (this->name, GF_LOG_NORMAL, 
+		"%"PRId64": op_ret (%d), op_errno(%d)", 
+		frame->root->unique, op_ret, op_errno);
+
+	STACK_UNWIND (frame, op_ret, op_errno, stats);
+	return 0;
+}
+
+int32_t 
+trace_stats (call_frame_t *frame,
+	     xlator_t *this, 
+	     int32_t flags)
+{
+	ERR_EINVAL_NORETURN (!this);
+  
+	gf_log (this->name, GF_LOG_NORMAL, 
+		"%"PRId64": (flags=%d)", 
+		frame->root->unique, flags);
+	
+	STACK_WIND (frame, 
+		    trace_stats_cbk, 
+		    FIRST_CHILD(this), 
+		    FIRST_CHILD(this)->mops->stats, 
+		    flags);
+
+	return 0;
+}
+
+void
+enable_all_calls (int enabled)
+{
+	int i;
+	for (i = 0; i < GF_FOP_MAXVALUE; i++)
+		trace_fop_names[i].enabled = enabled;
+}
+
+void 
+enable_call (const char *name, int enabled)
+{
+	int i;
+	for (i = 0; i < GF_FOP_MAXVALUE; i++)
+		if (!strcasecmp(trace_fop_names[i].name, name))
+			trace_fop_names[i].enabled = enabled;
+}
+
+
+/* 
+   include = 1 for "include-ops"
+           = 0 for "exclude-ops" 
+*/
+void
+process_call_list (const char *list, int include)
+{
+	enable_all_calls (include ? 0 : 1);
+	
+	char *call = strsep ((char **)&list, ",");
+	while (call) {
+		enable_call (call, include);
+		call = strsep ((char **)&list, ",");
+	}
+}
+
+
+int32_t 
+init (xlator_t *this)
+{
+  dict_t *options = this->options;
+  char *includes = NULL, *excludes = NULL;
+  
+  if (!this)
+	  return -1;
+  
+  if (!this->children || this->children->next) {
+	  gf_log (this->name, GF_LOG_ERROR, 
+		  "trace translator requires one subvolume");
+	  return -1;
+  }
+  if (!this->parents) {
+	  gf_log (this->name, GF_LOG_WARNING,
+		  "dangling volume. check volfile ");
+  }
+  
+  
+  includes = data_to_str (dict_get (options, "include-ops"));
+  excludes = data_to_str (dict_get (options, "exclude-ops"));
+  
+  {
+	  int i;
+	  for (i = 0; i < GF_FOP_MAXVALUE; i++) {
+		  trace_fop_names[i].name = (gf_fop_list[i] ?
+					     gf_fop_list[i] : ":O");
+		  trace_fop_names[i].enabled = 1;
+	  }
+  }
+  
+  if (includes && excludes) {
+	  gf_log (this->name, 
+		  GF_LOG_ERROR,
+		  "must specify only one of 'include-ops' and 'exclude-ops'");
+	  return -1;
+  }
+  if (includes)
+	  process_call_list (includes, 1);
+  if (excludes)
+	  process_call_list (excludes, 0);
+  
+  gf_log_set_loglevel (GF_LOG_NORMAL);
+  
+  /* Set this translator's inode table pointer to child node's pointer. */
+  this->itable = FIRST_CHILD (this)->itable;
+  
+  return 0;
+}
+
+void
+fini (xlator_t *this)
+{
+	if (!this)
+		return;
+	
+	gf_log (this->name, GF_LOG_NORMAL, 
+		"trace translator unloaded");
+	return;
+}
+
+struct xlator_fops fops = {
+  .stat        = trace_stat,
+  .readlink    = trace_readlink,
+  .mknod       = trace_mknod,
+  .mkdir       = trace_mkdir,
+  .unlink      = trace_unlink,
+  .rmdir       = trace_rmdir,
+  .symlink     = trace_symlink,
+  .rename      = trace_rename,
+  .link        = trace_link,
+  .chmod       = trace_chmod,
+  .chown       = trace_chown,
+  .truncate    = trace_truncate,
+  .utimens     = trace_utimens,
+  .open        = trace_open,
+  .readv       = trace_readv,
+  .writev      = trace_writev,
+  .statfs      = trace_statfs,
+  .flush       = trace_flush,
+  .fsync       = trace_fsync,
+  .setxattr    = trace_setxattr,
+  .getxattr    = trace_getxattr,
+  .removexattr = trace_removexattr,
+  .opendir     = trace_opendir,
+  .readdir     = trace_readdir, 
+  .fsyncdir    = trace_fsyncdir,
+  .access      = trace_access,
+  .ftruncate   = trace_ftruncate,
+  .fstat       = trace_fstat,
+  .create      = trace_create,
+  .fchown      = trace_fchown,
+  .fchmod      = trace_fchmod,
+  .lk          = trace_lk,
+  .inodelk     = trace_inodelk,
+  .finodelk    = trace_finodelk,
+  .entrylk     = trace_entrylk,
+  .lookup      = trace_lookup,
+  .setdents    = trace_setdents,
+  .getdents    = trace_getdents,
+  .checksum    = trace_checksum,
+  .xattrop     = trace_xattrop,
+  .fxattrop    = trace_fxattrop,
+};
+
+struct xlator_mops mops = {
+	.stats    = trace_stats,
+};
+
+struct xlator_cbks cbks = {
+};
+
+struct volume_options options[] = {
+	{ .key  = {"include-ops", "include"}, 
+	  .type = GF_OPTION_TYPE_STR,
+	  /*.value = { ""} */
+	},
+	{ .key  = {"exclude-ops", "exclude"}, 
+	  .type = GF_OPTION_TYPE_STR 
+	  /*.value = { ""} */	  
+	},
+	{ .key  = {NULL} },
+};
+