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authorKrishnan P <kp@gluster.com>2011-06-16 01:28:28 +0000
committerAnand Avati <avati@gluster.com>2011-06-16 09:15:16 -0700
commit1d4378e0e78309682c13d0fc0c97c3c3bb6674b7 (patch)
tree741e3da57f0cebcc00b54c9cd097662e2bafd669 /xlators/cluster/afr
parent4e6f6408b0e177dcdc0b19561bbaab6b7e26c23a (diff)
pump: cleanup xattrs on both commit and abort path.
This change makes glusterd to send a setxattr command for replace-brick commit operation similar to abort. Earlier we could commit even before the 'migration' of data was complete, with this change we fail that operation. Signed-off-by: Krishnan Parthasarathi <kp@gluster.com> Signed-off-by: Anand Avati <avati@gluster.com> BUG: 3033 (Changes to replace-brick and syntask interface.) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=3033
Diffstat (limited to 'xlators/cluster/afr')
-rw-r--r--xlators/cluster/afr/src/pump.c150
-rw-r--r--xlators/cluster/afr/src/pump.h3
2 files changed, 149 insertions, 4 deletions
diff --git a/xlators/cluster/afr/src/pump.c b/xlators/cluster/afr/src/pump.c
index 5497bddff2b..76280ea8120 100644
--- a/xlators/cluster/afr/src/pump.c
+++ b/xlators/cluster/afr/src/pump.c
@@ -581,6 +581,40 @@ pump_update_resume_path (xlator_t *this)
return 0;
}
+static int32_t
+pump_xattr_cleaner (call_frame_t *frame, void *cookie, xlator_t *this,
+ int32_t op_ret, int32_t op_errno)
+{
+ afr_private_t *priv = NULL;
+ pump_private_t *pump_priv = NULL;
+ loc_t loc = {0};
+ int i = 0;
+ int ret = 0;
+ int source = 0;
+ int sink = 1;
+
+ priv = this->private;
+ pump_priv = priv->pump_private;
+
+ build_root_loc (priv->root_inode, &loc);
+
+ ret = syncop_removexattr (priv->children[source], &loc,
+ PUMP_PATH);
+
+ ret = syncop_removexattr (priv->children[sink], &loc,
+ PUMP_SINK_COMPLETE);
+
+ for (i = 0; i < priv->child_count; i++) {
+ ret = syncop_removexattr (priv->children[i], &loc,
+ PUMP_SOURCE_COMPLETE);
+ if (ret)
+ gf_log (this->name, GF_LOG_DEBUG, "removexattr "
+ "failed with %s", strerror (errno));
+ }
+
+ return pump_command_reply (frame, this);
+}
+
static int
pump_complete_migration (xlator_t *this)
{
@@ -624,6 +658,11 @@ pump_complete_migration (xlator_t *this)
}
pump_save_path (this, "/");
+
+ } else if (state == PUMP_STATE_ABORT) {
+ gf_log (this->name, GF_LOG_DEBUG, "Starting cleanup "
+ "of pump internal xattrs");
+ call_resume (pump_priv->cleaner);
}
return 0;
@@ -1107,12 +1146,73 @@ out:
return 0;
}
+static int
+pump_cleanup_helper (void *data) {
+ call_frame_t *frame = data;
+
+ pump_xattr_cleaner (frame, 0, frame->this, 0, 0);
+
+ return 0;
+}
+
+static int
+pump_cleanup_done (int ret, call_frame_t *sync_frame, void *data)
+{
+ STACK_DESTROY (sync_frame->root);
+
+ return 0;
+}
+
+int
+pump_execute_commit (call_frame_t *frame, xlator_t *this)
+{
+ afr_private_t *priv = NULL;
+ pump_private_t *pump_priv = NULL;
+ afr_local_t *local = NULL;
+ call_frame_t *sync_frame = NULL;
+ int ret = 0;
+
+ priv = this->private;
+ pump_priv = priv->pump_private;
+ local = frame->local;
+
+
+ LOCK (&pump_priv->resume_path_lock);
+ {
+ pump_priv->number_files_pumped = 0;
+ pump_priv->current_file[0] = '\0';
+ }
+ UNLOCK (&pump_priv->resume_path_lock);
+
+ local->op_ret = 0;
+ if (pump_priv->pump_finished) {
+ pump_change_state (this, PUMP_STATE_COMMIT);
+ sync_frame = create_frame (this, this->ctx->pool);
+ ret = synctask_new (pump_priv->env, pump_cleanup_helper,
+ pump_cleanup_done, sync_frame, frame);
+ if (ret) {
+ gf_log (this->name, GF_LOG_DEBUG, "Couldn't create "
+ "synctask for cleaning up xattrs.");
+ }
+
+ } else {
+ gf_log (this->name, GF_LOG_ERROR, "Commit can't proceed. "
+ "Migration in progress");
+ local->op_ret = -1;
+ local->op_errno = EINPROGRESS;
+ pump_command_reply (frame, this);
+ }
+
+ return 0;
+}
int
pump_execute_abort (call_frame_t *frame, xlator_t *this)
{
- afr_private_t *priv = NULL;
- pump_private_t *pump_priv = NULL;
- afr_local_t *local = NULL;
+ afr_private_t *priv = NULL;
+ pump_private_t *pump_priv = NULL;
+ afr_local_t *local = NULL;
+ call_frame_t *sync_frame = NULL;
+ int ret = 0;
priv = this->private;
pump_priv = priv->pump_private;
@@ -1128,7 +1228,20 @@ pump_execute_abort (call_frame_t *frame, xlator_t *this)
UNLOCK (&pump_priv->resume_path_lock);
local->op_ret = 0;
- pump_command_reply (frame, this);
+ if (pump_priv->pump_finished) {
+ sync_frame = create_frame (this, this->ctx->pool);
+ ret = synctask_new (pump_priv->env, pump_cleanup_helper,
+ pump_cleanup_done, sync_frame, frame);
+ if (ret) {
+ gf_log (this->name, GF_LOG_DEBUG, "Couldn't create "
+ "synctask for cleaning up xattrs.");
+ }
+
+ } else {
+ pump_priv->cleaner = fop_setxattr_cbk_stub (frame,
+ pump_xattr_cleaner,
+ 0, 0);
+ }
return 0;
}
@@ -1182,6 +1295,30 @@ out:
}
gf_boolean_t
+pump_command_commit (xlator_t *this, dict_t *dict)
+{
+ char *cmd = NULL;
+ int dict_ret = -1;
+ int ret = _gf_true;
+
+ dict_ret = dict_get_str (dict, PUMP_CMD_COMMIT, &cmd);
+ if (dict_ret < 0) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "Not a pump commit command");
+ ret = _gf_false;
+ goto out;
+ }
+
+ gf_log (this->name, GF_LOG_DEBUG,
+ "Hit a pump command - commit");
+ ret = _gf_true;
+
+out:
+ return ret;
+
+}
+
+gf_boolean_t
pump_command_abort (xlator_t *this, dict_t *dict)
{
char *cmd = NULL;
@@ -1596,6 +1733,11 @@ pump_parse_command (call_frame_t *frame, xlator_t *this,
frame->local = local;
local->dict = dict_ref (dict);
ret = pump_execute_abort (frame, this);
+
+ } else if (pump_command_commit (this, dict)) {
+ frame->local = local;
+ local->dict = dict_ref (dict);
+ ret = pump_execute_commit (frame, this);
}
return ret;
}
diff --git a/xlators/cluster/afr/src/pump.h b/xlators/cluster/afr/src/pump.h
index a46f9d7a542..394e6eab753 100644
--- a/xlators/cluster/afr/src/pump.h
+++ b/xlators/cluster/afr/src/pump.h
@@ -34,6 +34,7 @@
#define IS_ENTRY_PARENT(entry) (!strcmp (entry, ".."))
#define PUMP_CMD_START "trusted.glusterfs.pump.start"
+#define PUMP_CMD_COMMIT "trusted.glusterfs.pump.commit"
#define PUMP_CMD_ABORT "trusted.glusterfs.pump.abort"
#define PUMP_CMD_PAUSE "trusted.glusterfs.pump.pause"
#define PUMP_CMD_STATUS "trusted.glusterfs.pump.status"
@@ -51,6 +52,7 @@ typedef enum {
PUMP_STATE_RESUME, /* Pump is resuming from a previous pause */
PUMP_STATE_PAUSE, /* Pump is paused */
PUMP_STATE_ABORT, /* Pump is aborted */
+ PUMP_STATE_COMMIT, /* Pump is commited */
} pump_state_t;
typedef struct _pump_private {
@@ -64,6 +66,7 @@ typedef struct _pump_private {
gf_boolean_t pump_finished; /* Boolean to indicate pump termination */
char pump_start_pending; /* Boolean to mark start pending until
CHILD_UP */
+ call_stub_t *cleaner;
} pump_private_t;
void