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From 51090a4b3cb000d601083f12d1875547819fc03f Mon Sep 17 00:00:00 2001
From: Mohit Agrawal <moagrawal@redhat.com>
Date: Wed, 4 Mar 2020 09:17:26 +0530
Subject: [PATCH 447/449] core[brick_mux]: brick crashed when creating and
deleting volumes over time
Problem: In brick_mux environment, while volumes are created/stopped in a loop
after running a long time the main brick is crashed.The brick is crashed
because the main brick process was not cleaned up memory for all objects
at the time of detaching a volume.
Below are the objects that are missed at the time of detaching a volume
1) xlator object for a brick graph
2) local_pool for posix_lock xlator
3) rpc object cleanup at quota xlator
4) inode leak at brick xlator
Solution: To avoid the crash resolve all leak at the time of detaching a brick
> Change-Id: Ibb6e46c5fba22b9441a88cbaf6b3278823235913
> updates: #977
> Signed-off-by: Mohit Agrawal <moagrawa@redhat.com>
> (Cherry pick from commit e589d8de66d3325da8fbbbe44d1a5bd6335e08ab)
> (Reviewed on upstream link https://review.gluster.org/#/c/glusterfs/+/24209/)
BUG: 1790336
Change-Id: Ibb6e46c5fba22b9441a88cbaf6b3278823235913
Signed-off-by: Mohit Agrawal <moagrawa@redhat.com>
Reviewed-on: https://code.engineering.redhat.com/gerrit/202782
Tested-by: RHGS Build Bot <nigelb@redhat.com>
Reviewed-by: Xavi Hernandez Juan <xhernandez@redhat.com>
---
libglusterfs/src/glusterfs/glusterfs.h | 1 +
libglusterfs/src/graph.c | 1 +
libglusterfs/src/graph.y | 2 +-
libglusterfs/src/xlator.c | 29 ++++++++----
xlators/features/changelog/src/changelog.c | 1 +
xlators/features/locks/src/posix.c | 4 ++
xlators/features/quota/src/quota-enforcer-client.c | 14 +++++-
xlators/features/quota/src/quota.c | 54 ++++++++++++++++++++--
xlators/features/quota/src/quota.h | 3 ++
xlators/protocol/server/src/server.c | 12 +++--
10 files changed, 103 insertions(+), 18 deletions(-)
diff --git a/libglusterfs/src/glusterfs/glusterfs.h b/libglusterfs/src/glusterfs/glusterfs.h
index 177a020..584846e 100644
--- a/libglusterfs/src/glusterfs/glusterfs.h
+++ b/libglusterfs/src/glusterfs/glusterfs.h
@@ -603,6 +603,7 @@ struct _glusterfs_graph {
int used; /* Should be set when fuse gets
first CHILD_UP */
uint32_t volfile_checksum;
+ pthread_mutex_t mutex;
};
typedef struct _glusterfs_graph glusterfs_graph_t;
diff --git a/libglusterfs/src/graph.c b/libglusterfs/src/graph.c
index bb5e67a..1cd92db 100644
--- a/libglusterfs/src/graph.c
+++ b/libglusterfs/src/graph.c
@@ -1092,6 +1092,7 @@ glusterfs_graph_destroy_residual(glusterfs_graph_t *graph)
ret = xlator_tree_free_memacct(graph->first);
list_del_init(&graph->list);
+ pthread_mutex_destroy(&graph->mutex);
GF_FREE(graph);
return ret;
diff --git a/libglusterfs/src/graph.y b/libglusterfs/src/graph.y
index 5b92985..5733515 100644
--- a/libglusterfs/src/graph.y
+++ b/libglusterfs/src/graph.y
@@ -541,7 +541,7 @@ glusterfs_graph_new ()
return NULL;
INIT_LIST_HEAD (&graph->list);
-
+ pthread_mutex_init(&graph->mutex, NULL);
gettimeofday (&graph->dob, NULL);
return graph;
diff --git a/libglusterfs/src/xlator.c b/libglusterfs/src/xlator.c
index 108b96a..36cc32c 100644
--- a/libglusterfs/src/xlator.c
+++ b/libglusterfs/src/xlator.c
@@ -938,6 +938,8 @@ xlator_mem_cleanup(xlator_t *this)
xlator_list_t **trav_p = NULL;
xlator_t *top = NULL;
xlator_t *victim = NULL;
+ glusterfs_graph_t *graph = NULL;
+ gf_boolean_t graph_cleanup = _gf_false;
if (this->call_cleanup || !this->ctx)
return;
@@ -945,6 +947,12 @@ xlator_mem_cleanup(xlator_t *this)
this->call_cleanup = 1;
ctx = this->ctx;
+ inode_table = this->itable;
+ if (inode_table) {
+ inode_table_destroy(inode_table);
+ this->itable = NULL;
+ }
+
xlator_call_fini(trav);
while (prev) {
@@ -953,12 +961,6 @@ xlator_mem_cleanup(xlator_t *this)
prev = trav;
}
- inode_table = this->itable;
- if (inode_table) {
- inode_table_destroy(inode_table);
- this->itable = NULL;
- }
-
if (this->fini) {
this->fini(this);
}
@@ -968,17 +970,28 @@ xlator_mem_cleanup(xlator_t *this)
if (ctx->active) {
top = ctx->active->first;
LOCK(&ctx->volfile_lock);
- /* TODO here we have leak for xlator node in a graph */
- /* Need to move only top xlator from a graph */
for (trav_p = &top->children; *trav_p; trav_p = &(*trav_p)->next) {
victim = (*trav_p)->xlator;
if (victim->call_cleanup && !strcmp(victim->name, this->name)) {
+ graph_cleanup = _gf_true;
(*trav_p) = (*trav_p)->next;
break;
}
}
UNLOCK(&ctx->volfile_lock);
}
+
+ if (graph_cleanup) {
+ prev = this;
+ graph = ctx->active;
+ pthread_mutex_lock(&graph->mutex);
+ while (prev) {
+ trav = prev->next;
+ GF_FREE(prev);
+ prev = trav;
+ }
+ pthread_mutex_unlock(&graph->mutex);
+ }
}
void
diff --git a/xlators/features/changelog/src/changelog.c b/xlators/features/changelog/src/changelog.c
index ff06c09..b54112c 100644
--- a/xlators/features/changelog/src/changelog.c
+++ b/xlators/features/changelog/src/changelog.c
@@ -2872,6 +2872,7 @@ fini(xlator_t *this)
if (priv->active || priv->rpc_active) {
/* terminate RPC server/threads */
changelog_cleanup_rpc(this, priv);
+ GF_FREE(priv->ev_dispatcher);
}
/* call barrier_disable to cancel timer */
if (priv->barrier_enabled)
diff --git a/xlators/features/locks/src/posix.c b/xlators/features/locks/src/posix.c
index 9a14c64..50f1265 100644
--- a/xlators/features/locks/src/posix.c
+++ b/xlators/features/locks/src/posix.c
@@ -4102,6 +4102,10 @@ fini(xlator_t *this)
if (!priv)
return;
this->private = NULL;
+ if (this->local_pool) {
+ mem_pool_destroy(this->local_pool);
+ this->local_pool = NULL;
+ }
GF_FREE(priv->brickname);
GF_FREE(priv);
diff --git a/xlators/features/quota/src/quota-enforcer-client.c b/xlators/features/quota/src/quota-enforcer-client.c
index 1a4c2e3..097439d 100644
--- a/xlators/features/quota/src/quota-enforcer-client.c
+++ b/xlators/features/quota/src/quota-enforcer-client.c
@@ -362,16 +362,28 @@ quota_enforcer_notify(struct rpc_clnt *rpc, void *mydata,
{
xlator_t *this = NULL;
int ret = 0;
+ quota_priv_t *priv = NULL;
this = mydata;
-
+ priv = this->private;
switch (event) {
case RPC_CLNT_CONNECT: {
+ pthread_mutex_lock(&priv->conn_mutex);
+ {
+ priv->conn_status = _gf_true;
+ }
+ pthread_mutex_unlock(&priv->conn_mutex);
gf_msg_trace(this->name, 0, "got RPC_CLNT_CONNECT");
break;
}
case RPC_CLNT_DISCONNECT: {
+ pthread_mutex_lock(&priv->conn_mutex);
+ {
+ priv->conn_status = _gf_false;
+ pthread_cond_signal(&priv->conn_cond);
+ }
+ pthread_mutex_unlock(&priv->conn_mutex);
gf_msg_trace(this->name, 0, "got RPC_CLNT_DISCONNECT");
break;
}
diff --git a/xlators/features/quota/src/quota.c b/xlators/features/quota/src/quota.c
index a0c236d..d1123ce 100644
--- a/xlators/features/quota/src/quota.c
+++ b/xlators/features/quota/src/quota.c
@@ -5014,6 +5014,43 @@ quota_forget(xlator_t *this, inode_t *inode)
return 0;
}
+int
+notify(xlator_t *this, int event, void *data, ...)
+{
+ quota_priv_t *priv = NULL;
+ int ret = 0;
+ rpc_clnt_t *rpc = NULL;
+ gf_boolean_t conn_status = _gf_true;
+ xlator_t *victim = data;
+
+ priv = this->private;
+ if (!priv || !priv->is_quota_on)
+ goto out;
+
+ if (event == GF_EVENT_PARENT_DOWN) {
+ rpc = priv->rpc_clnt;
+ if (rpc) {
+ rpc_clnt_disable(rpc);
+ pthread_mutex_lock(&priv->conn_mutex);
+ {
+ conn_status = priv->conn_status;
+ while (conn_status) {
+ (void)pthread_cond_wait(&priv->conn_cond,
+ &priv->conn_mutex);
+ conn_status = priv->conn_status;
+ }
+ }
+ pthread_mutex_unlock(&priv->conn_mutex);
+ gf_log(this->name, GF_LOG_INFO,
+ "Notify GF_EVENT_PARENT_DOWN for brick %s", victim->name);
+ }
+ }
+
+out:
+ ret = default_notify(this, event, data);
+ return ret;
+}
+
int32_t
init(xlator_t *this)
{
@@ -5056,6 +5093,10 @@ init(xlator_t *this)
goto err;
}
+ pthread_mutex_init(&priv->conn_mutex, NULL);
+ pthread_cond_init(&priv->conn_cond, NULL);
+ priv->conn_status = _gf_false;
+
if (priv->is_quota_on) {
rpc = quota_enforcer_init(this, this->options);
if (rpc == NULL) {
@@ -5169,20 +5210,22 @@ fini(xlator_t *this)
{
quota_priv_t *priv = NULL;
rpc_clnt_t *rpc = NULL;
- int i = 0, cnt = 0;
priv = this->private;
if (!priv)
return;
rpc = priv->rpc_clnt;
priv->rpc_clnt = NULL;
- this->private = NULL;
if (rpc) {
- cnt = GF_ATOMIC_GET(rpc->refcount);
- for (i = 0; i < cnt; i++)
- rpc_clnt_unref(rpc);
+ rpc_clnt_connection_cleanup(&rpc->conn);
+ rpc_clnt_unref(rpc);
}
+
+ this->private = NULL;
LOCK_DESTROY(&priv->lock);
+ pthread_mutex_destroy(&priv->conn_mutex);
+ pthread_cond_destroy(&priv->conn_cond);
+
GF_FREE(priv);
if (this->local_pool) {
mem_pool_destroy(this->local_pool);
@@ -5314,6 +5357,7 @@ struct volume_options options[] = {
xlator_api_t xlator_api = {
.init = init,
.fini = fini,
+ .notify = notify,
.reconfigure = reconfigure,
.mem_acct_init = mem_acct_init,
.op_version = {1}, /* Present from the initial version */
diff --git a/xlators/features/quota/src/quota.h b/xlators/features/quota/src/quota.h
index a5a99ca..e51ffd4 100644
--- a/xlators/features/quota/src/quota.h
+++ b/xlators/features/quota/src/quota.h
@@ -217,6 +217,9 @@ struct quota_priv {
char *volume_uuid;
uint64_t validation_count;
int32_t quotad_conn_status;
+ pthread_mutex_t conn_mutex;
+ pthread_cond_t conn_cond;
+ gf_boolean_t conn_status;
};
typedef struct quota_priv quota_priv_t;
diff --git a/xlators/protocol/server/src/server.c b/xlators/protocol/server/src/server.c
index a5f09fe..54d9c0f 100644
--- a/xlators/protocol/server/src/server.c
+++ b/xlators/protocol/server/src/server.c
@@ -409,7 +409,13 @@ server_call_xlator_mem_cleanup(xlator_t *this, char *victim_name)
arg = calloc(1, sizeof(*arg));
arg->this = this;
- arg->victim_name = gf_strdup(victim_name);
+ arg->victim_name = strdup(victim_name);
+ if (!arg->victim_name) {
+ gf_smsg(this->name, GF_LOG_CRITICAL, ENOMEM, LG_MSG_NO_MEMORY,
+ "Memory allocation is failed");
+ return;
+ }
+
th_ret = gf_thread_create_detached(&th_id, server_graph_janitor_threads,
arg, "graphjanitor");
if (th_ret) {
@@ -417,7 +423,7 @@ server_call_xlator_mem_cleanup(xlator_t *this, char *victim_name)
"graph janitor Thread"
" creation is failed for brick %s",
victim_name);
- GF_FREE(arg->victim_name);
+ free(arg->victim_name);
free(arg);
}
}
@@ -628,7 +634,7 @@ server_graph_janitor_threads(void *data)
}
out:
- GF_FREE(arg->victim_name);
+ free(arg->victim_name);
free(arg);
return NULL;
}
--
1.8.3.1