TAKE2[PATCH BUG:213 1/1] Support for Process State Dump

Support for process state dump.

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

BUG: 213 (Support for process state dump)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=213

4 files changed, 240 insertions, 0 deletions

diff --git a/xlators/cluster/afr/src/afr.c b/xlators/cluster/afr/src/afr.c
index 6b3b05c6b3c..6b7b007aeb8 100644
--- a/xlators/cluster/afr/src/afr.c
+++ b/xlators/cluster/afr/src/afr.c
@@ -43,6 +43,7 @@
 #include "compat-errno.h"
 #include "compat.h"
 #include "byte-order.h"
+#include "statedump.h"
 
 #include "fd.h"
 
@@ -2158,6 +2159,60 @@ out:
 	return 0;
 }
 
+int
+afr_priv_dump (xlator_t *this)
+{
+	afr_private_t *priv = NULL;
+        char  key_prefix[GF_DUMP_MAX_BUF_LEN];
+        char  key[GF_DUMP_MAX_BUF_LEN];
+        int   i = 0;
+
+
+        assert(this);
+	priv = this->private;
+
+        assert(priv);
+        snprintf(key_prefix, GF_DUMP_MAX_BUF_LEN, "%s.%s", this->type, this->name);
+        gf_proc_dump_add_section(key_prefix);
+        gf_proc_dump_build_key(key, key_prefix, "child_count");
+        gf_proc_dump_write(key, "%u", priv->child_count);
+        gf_proc_dump_build_key(key, key_prefix, "read_child_rr");
+        gf_proc_dump_write(key, "%u", priv->read_child_rr);
+	for (i = 0; i < priv->child_count; i++) {
+                gf_proc_dump_build_key(key, key_prefix, "child_up[%d]", i);
+                gf_proc_dump_write(key, "%d", priv->child_up[i]);
+                gf_proc_dump_build_key(key, key_prefix, 
+                                        "pending_key[%d]", i);
+                gf_proc_dump_write(key, "%s", priv->pending_key[i]);
+        }
+        gf_proc_dump_build_key(key, key_prefix, "data_self_heal");
+        gf_proc_dump_write(key, "%d", priv->data_self_heal);
+        gf_proc_dump_build_key(key, key_prefix, "metadata_self_heal");
+        gf_proc_dump_write(key, "%d", priv->metadata_self_heal);
+        gf_proc_dump_build_key(key, key_prefix, "entry_self_heal");
+        gf_proc_dump_write(key, "%d", priv->entry_self_heal);
+        gf_proc_dump_build_key(key, key_prefix, "data_change_log");
+        gf_proc_dump_write(key, "%d", priv->data_change_log);
+        gf_proc_dump_build_key(key, key_prefix, "metadata_change_log");
+        gf_proc_dump_write(key, "%d", priv->metadata_change_log);
+        gf_proc_dump_build_key(key, key_prefix, "entry_change_log");
+        gf_proc_dump_write(key, "%d", priv->entry_change_log);
+        gf_proc_dump_build_key(key, key_prefix, "read_child");
+        gf_proc_dump_write(key, "%d", priv->read_child);
+        gf_proc_dump_build_key(key, key_prefix, "favorite_child");
+        gf_proc_dump_write(key, "%u", priv->favorite_child);
+        gf_proc_dump_build_key(key, key_prefix, "data_lock_server_count");
+        gf_proc_dump_write(key, "%u", priv->data_lock_server_count);
+        gf_proc_dump_build_key(key, key_prefix, "metadata_lock_server_count");
+        gf_proc_dump_write(key, "%u", priv->metadata_lock_server_count);
+        gf_proc_dump_build_key(key, key_prefix, "entry_lock_server_count");
+        gf_proc_dump_write(key, "%u", priv->entry_lock_server_count);
+        gf_proc_dump_build_key(key, key_prefix, "wait_count");
+        gf_proc_dump_write(key, "%u", priv->wait_count);
+
+        return 0;
+}
+
 
 /**
  * find_child_index - find the child's index in the array of subvolumes
@@ -2587,6 +2642,10 @@ struct xlator_fops fops = {
 struct xlator_mops mops = {
 };
 
+struct xlator_dumpops dumpops = {
+        .priv       = afr_priv_dump,
+};
+
 
 struct xlator_cbks cbks = {
         .release     = afr_release,
diff --git a/xlators/features/locks/src/posix.c b/xlators/features/locks/src/posix.c
index d672beaebc3..7389e1e6afd 100644
--- a/xlators/features/locks/src/posix.c
+++ b/xlators/features/locks/src/posix.c
@@ -36,6 +36,7 @@
 
 #include "locks.h"
 #include "common.h"
+#include "statedump.h"
 
 #ifndef LLONG_MAX
 #define LLONG_MAX LONG_LONG_MAX /* compat with old gcc */
@@ -768,6 +769,57 @@ pl_forget (xlator_t *this,
 }
 
 
+void
+pl_dump_inode_priv (inode_t *inode)
+{
+
+        int ret = -1;
+        uint64_t   tmp_pl_inode = 0;
+        pl_inode_t *pl_inode = NULL;
+        char key[GF_DUMP_MAX_BUF_LEN];
+
+        if (!inode)
+                return;
+
+	ret = inode_ctx_get (inode, inode->table->xl, &tmp_pl_inode);
+
+	if (ret != 0) 
+                return;
+                
+        pl_inode = (pl_inode_t *)(long)tmp_pl_inode;
+
+        if (!pl_inode) 
+                return;
+
+        gf_proc_dump_build_key(key, 
+                               "xlator.feature.locks.inode",
+                               "%ld.%s",inode->ino, "mandatory");
+        gf_proc_dump_write(key, "%d", pl_inode->mandatory);
+}
+
+
+
+/*
+ * pl_dump_inode - inode dump function for posix locks
+ *
+ */
+int
+pl_dump_inode (xlator_t *this)
+{
+
+        assert(this);
+        
+        if (this->itable) {
+                inode_table_dump(this->itable,
+                                 "xlator.features.locks.inode_table",
+                                  pl_dump_inode_priv);
+        }
+
+	return 0;
+}
+
+
+
 int
 init (xlator_t *this)
 {
@@ -864,6 +916,9 @@ struct xlator_fops fops = {
 struct xlator_mops mops = {
 };
 
+struct xlator_dumpops dumpops = {
+        .inode      = pl_dump_inode,
+};
 
 struct xlator_cbks cbks = {
 	.forget      = pl_forget,
diff --git a/xlators/protocol/server/src/server-protocol.c b/xlators/protocol/server/src/server-protocol.c
index 220f5b3b466..47a6f027736 100644
--- a/xlators/protocol/server/src/server-protocol.c
+++ b/xlators/protocol/server/src/server-protocol.c
@@ -40,6 +40,7 @@
 #include "dict.h"
 #include "compat.h"
 #include "compat-errno.h"
+#include "statedump.h"
 
 
 static void
@@ -7512,7 +7513,80 @@ server_nop_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
 	return 0;
 }
 
+/*
+ * server_fd - fdtable dump function for server protocol
+ * @this:
+ *
+ */
+int
+server_fd (xlator_t *this)
+{
+         server_conf_t        *conf = NULL;
+ 	 server_connection_t  *trav = NULL;
+         char                 key[GF_DUMP_MAX_BUF_LEN];
+         int                  i = 1;
+         int                  ret = -1;
+ 	
+         if (!this)
+                 return -1;
+ 	
+         conf = this->private;
+         if (!conf) {
+ 		gf_log (this->name, GF_LOG_WARNING,
+ 			"conf null in xlator");
+                return -1;
+         }
+ 
+         gf_proc_dump_add_section("xlator.protocol.server.conn");
+         
+         ret = pthread_mutex_trylock (&conf->mutex);
+         if (ret) { 
+                gf_log("", GF_LOG_WARNING, "Unable to dump fdtable"
+                " errno: %d", errno);
+                return -1;
+        }
+ 	
+         list_for_each_entry (trav, &conf->conns, list) {
+                 if (trav->id) {
+                         gf_proc_dump_build_key(key, 
+                                          "xlator.protocol.server.conn", 
+                                          "%d.id", i);
+                         gf_proc_dump_write(key, "%s", trav->id);
+                 }
+                         
+                 gf_proc_dump_build_key(key,"xlator.protocol.server.conn",
+                                        "%d.ref",i) 
+                 gf_proc_dump_write(key, "%d", trav->ref);
+                 if (trav->bound_xl) {
+                         gf_proc_dump_build_key(key, 
+                                          "xlator.protocol.server.conn", 
+                                          "%d.bound_xl", i);
+                         gf_proc_dump_write(key, "%s", trav->bound_xl->name);
+                 }
+                         
+                 gf_proc_dump_build_key(key, 
+                                        "xlator.protocol.server.conn", 
+                                         "%d.id", i);
+                 fdtable_dump(trav->fdtable,key);
+                 i++;
+         }
+ 	pthread_mutex_unlock (&conf->mutex);
+ 
+ 
+ 	return 0;
+ }
+
+int
+server_priv (xlator_t *this) 
+{
+        return 0;
+}
 
+int
+server_inode (xlator_t *this)
+{
+        return 0;
+}
 static void
 get_auth_types (dict_t *this, char *key, data_t *value, void *data)
 {
@@ -7841,6 +7915,13 @@ struct xlator_fops fops = {
 struct xlator_cbks cbks = {
 };
 
+struct xlator_dumpops dumpops = {
+        .inode = server_inode,
+        .priv  = server_priv,
+        .fd    = server_fd,
+};
+
+
 struct volume_options options[] = {
  	{ .key   = {"transport-type"}, 
 	  .value = {"tcp", "socket", "ib-verbs", "unix", "ib-sdp", 
diff --git a/xlators/storage/posix/src/posix.c b/xlators/storage/posix/src/posix.c
index 4bcea07f9c6..b124d136201 100644
--- a/xlators/storage/posix/src/posix.c
+++ b/xlators/storage/posix/src/posix.c
@@ -45,6 +45,7 @@
 #include "compat.h"
 #include "byte-order.h"
 #include "syscall.h"
+#include "statedump.h"
 
 #undef HAVE_SET_FSID
 #ifdef HAVE_SET_FSID
@@ -3808,6 +3809,45 @@ posix_checksum (call_frame_t *frame, xlator_t *this,
         return 0;
 }
 
+int32_t
+posix_priv (xlator_t *this)
+{
+        struct posix_private *priv = NULL;
+        char  key_prefix[GF_DUMP_MAX_BUF_LEN];
+        char  key[GF_DUMP_MAX_BUF_LEN];
+
+        snprintf(key_prefix, GF_DUMP_MAX_BUF_LEN, "%s.%s", this->type, 
+                       this->name);
+        gf_proc_dump_add_section(key_prefix);
+
+        if (!this) 
+                return 0;
+
+        priv = this->private;
+
+        if (!priv) 
+                return 0;
+
+        gf_proc_dump_build_key(key, key_prefix, "base_path");
+        gf_proc_dump_write(key,"%s", priv->base_path);
+        gf_proc_dump_build_key(key, key_prefix, "base_path_length");
+        gf_proc_dump_write(key,"%d", priv->base_path_length);
+        gf_proc_dump_build_key(key, key_prefix, "max_read");
+        gf_proc_dump_write(key,"%d", priv->max_read);
+        gf_proc_dump_build_key(key, key_prefix, "max_write");
+        gf_proc_dump_write(key,"%d", priv->max_write);
+        gf_proc_dump_build_key(key, key_prefix, "stats.nr_files");
+        gf_proc_dump_write(key,"%ld", priv->stats.nr_files);
+
+        return 0;
+}
+
+int32_t
+posix_inode (xlator_t *this)
+{
+        return 0;
+}
+
 /**
  * notify - when parent sends PARENT_UP, send CHILD_UP event from here
  */
@@ -4056,6 +4096,11 @@ fini (xlator_t *this)
         return;
 }
 
+struct xlator_dumpops dumpops = {
+        .priv    = posix_priv,
+        .inode   = posix_inode,
+};
+
 struct xlator_mops mops = {
         .stats    = posix_stats,
 };