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authorVarun Shastry <vshastry@redhat.com>2012-12-17 11:20:31 +0530
committerAnand Avati <avati@redhat.com>2013-02-03 15:29:59 -0800
commit50f0882051dff81882115bf72abb67577099944f (patch)
treedc209fbaa83df573e81b14df1d6b06fffcc89de4
parent212ab59c511e13cc470e623061fcf113456841c8 (diff)
cluster/stripe: Mount issues with Stripe xlator
Problem: * 'CONNECTING' is taken as CHILD_UP. * Sending notifications (default_notify()) for all the events individually while mounting. Solution: * Consider Child up only after the event CHILD_UP is received. * Send a single notification for all the children's events only while mounting. Change-Id: I1b7de127e12f5bfb8f80702dbdce02019e138bc8 BUG: 885072 Signed-off-by: Varun Shastry <vshastry@redhat.com> Reviewed-on: http://review.gluster.org/4356 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
-rw-r--r--xlators/cluster/stripe/src/stripe-mem-types.h1
-rw-r--r--xlators/cluster/stripe/src/stripe.c63
-rw-r--r--xlators/cluster/stripe/src/stripe.h2
3 files changed, 46 insertions, 20 deletions
diff --git a/xlators/cluster/stripe/src/stripe-mem-types.h b/xlators/cluster/stripe/src/stripe-mem-types.h
index e05ba0c29c3..e9ac9cf4648 100644
--- a/xlators/cluster/stripe/src/stripe-mem-types.h
+++ b/xlators/cluster/stripe/src/stripe-mem-types.h
@@ -20,6 +20,7 @@ enum gf_stripe_mem_types_ {
gf_stripe_mt_stripe_fd_ctx_t,
gf_stripe_mt_char,
gf_stripe_mt_int8_t,
+ gf_stripe_mt_int32_t,
gf_stripe_mt_xlator_t,
gf_stripe_mt_stripe_private_t,
gf_stripe_mt_stripe_options,
diff --git a/xlators/cluster/stripe/src/stripe.c b/xlators/cluster/stripe/src/stripe.c
index 43e3c3ed264..b3e87d31b5a 100644
--- a/xlators/cluster/stripe/src/stripe.c
+++ b/xlators/cluster/stripe/src/stripe.c
@@ -3809,6 +3809,7 @@ notify (xlator_t *this, int32_t event, void *data, ...)
stripe_private_t *priv = NULL;
int down_client = 0;
int i = 0;
+ gf_boolean_t heard_from_all_children = _gf_false;
if (!this)
return 0;
@@ -3820,30 +3821,34 @@ notify (xlator_t *this, int32_t event, void *data, ...)
switch (event)
{
case GF_EVENT_CHILD_UP:
- case GF_EVENT_CHILD_CONNECTING:
{
/* get an index number to set */
for (i = 0; i < priv->child_count; i++) {
if (data == priv->xl_array[i])
break;
}
- priv->state[i] = 1;
- for (i = 0; i < priv->child_count; i++) {
- if (!priv->state[i])
- down_client++;
+
+ if (priv->child_count == i) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "got GF_EVENT_CHILD_UP bad subvolume %s",
+ data? ((xlator_t *)data)->name: NULL);
+ break;
}
LOCK (&priv->lock);
{
- priv->nodes_down = down_client;
if (data == FIRST_CHILD (this))
priv->first_child_down = 0;
- if (!priv->nodes_down)
- default_notify (this, event, data);
+ priv->last_event[i] = event;
}
UNLOCK (&priv->lock);
}
break;
+ case GF_EVENT_CHILD_CONNECTING:
+ {
+ // 'CONNECTING' doesn't ensure its CHILD_UP, so do nothing
+ goto out;
+ }
case GF_EVENT_CHILD_DOWN:
{
/* get an index number to set */
@@ -3851,20 +3856,19 @@ notify (xlator_t *this, int32_t event, void *data, ...)
if (data == priv->xl_array[i])
break;
}
- priv->state[i] = 0;
- for (i = 0; i < priv->child_count; i++) {
- if (!priv->state[i])
- down_client++;
+
+ if (priv->child_count == i) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "got GF_EVENT_CHILD_DOWN bad subvolume %s",
+ data? ((xlator_t *)data)->name: NULL);
+ break;
}
LOCK (&priv->lock);
{
- priv->nodes_down = down_client;
-
if (data == FIRST_CHILD (this))
priv->first_child_down = 1;
- if (priv->nodes_down)
- default_notify (this, event, data);
+ priv->last_event[i] = event;
}
UNLOCK (&priv->lock);
}
@@ -3874,10 +3878,30 @@ notify (xlator_t *this, int32_t event, void *data, ...)
{
/* */
default_notify (this, event, data);
+ goto out;
}
break;
}
+ // Consider child as down if it's last_event is not CHILD_UP
+ for (i = 0, down_client = 0; i < priv->child_count; i++)
+ if (priv->last_event[i] != GF_EVENT_CHILD_UP)
+ down_client++;
+
+ LOCK (&priv->lock);
+ {
+ priv->nodes_down = down_client;
+ }
+ UNLOCK (&priv->lock);
+
+ heard_from_all_children = _gf_true;
+ for (i = 0; i < priv->child_count; i++)
+ if (!priv->last_event[i])
+ heard_from_all_children = _gf_false;
+
+ if (heard_from_all_children)
+ default_notify (this, event, data);
+out:
return 0;
}
@@ -4598,9 +4622,9 @@ init (xlator_t *this)
if (!priv->xl_array)
goto out;
- priv->state = GF_CALLOC (count, sizeof (int8_t),
- gf_stripe_mt_int8_t);
- if (!priv->state)
+ priv->last_event = GF_CALLOC (count, sizeof (int),
+ gf_stripe_mt_int32_t);
+ if (!priv->last_event)
goto out;
priv->child_count = count;
@@ -4701,6 +4725,7 @@ fini (xlator_t *this)
trav = trav->next;
GF_FREE (prev);
}
+ GF_FREE (priv->last_event);
LOCK_DESTROY (&priv->lock);
GF_FREE (priv);
}
diff --git a/xlators/cluster/stripe/src/stripe.h b/xlators/cluster/stripe/src/stripe.h
index 53b683c735c..5673d18f390 100644
--- a/xlators/cluster/stripe/src/stripe.h
+++ b/xlators/cluster/stripe/src/stripe.h
@@ -98,8 +98,8 @@ struct stripe_private {
gf_lock_t lock;
uint8_t nodes_down;
int8_t first_child_down;
+ int *last_event;
int8_t child_count;
- int8_t *state; /* Current state of child node */
gf_boolean_t xattr_supported; /* default yes */
gf_boolean_t coalesce;
char vol_uuid[UUID_SIZE + 1];