From 1b53756e50cb9ad5422292d7f4e1e6fe23357222 Mon Sep 17 00:00:00 2001 From: Krishnan Parthasarathi Date: Wed, 3 Sep 2014 11:03:06 +0530 Subject: glusterd: Add last successful glusterd lock backtrace Also, moved the backtrace fetching logic to a separate function. Modified the backtrace fetching logic able to work under memory pressure conditions. Change-Id: Ie38bea425a085770f41831314aeda95595177ece BUG: 1138503 Signed-off-by: Krishnan Parthasarathi Reviewed-on: http://review.gluster.org/8584 Tested-by: Gluster Build System Reviewed-by: Jeff Darcy Reviewed-by: Atin Mukherjee --- xlators/mgmt/glusterd/src/glusterd-locks.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'xlators/mgmt') diff --git a/xlators/mgmt/glusterd/src/glusterd-locks.c b/xlators/mgmt/glusterd/src/glusterd-locks.c index 2d1a664ebd2..b2629fd87b8 100644 --- a/xlators/mgmt/glusterd/src/glusterd-locks.c +++ b/xlators/mgmt/glusterd/src/glusterd-locks.c @@ -491,6 +491,7 @@ out: return ret; } + int32_t glusterd_mgmt_v3_lock (const char *name, uuid_t uuid, char *type) { @@ -501,6 +502,7 @@ glusterd_mgmt_v3_lock (const char *name, uuid_t uuid, char *type) gf_boolean_t is_valid = _gf_true; uuid_t owner = {0}; xlator_t *this = NULL; + char *bt = NULL; this = THIS; GF_ASSERT (this); @@ -569,6 +571,18 @@ glusterd_mgmt_v3_lock (const char *name, uuid_t uuid, char *type) goto out; } + /* Saving the backtrace into the pre-allocated buffer, ctx->btbuf*/ + if ((bt = gf_backtrace_save (NULL))) { + snprintf (key, sizeof (key), "debug.last-success-bt-%s-%s", + name, type); + ret = dict_set_dynstr_with_alloc (priv->mgmt_v3_lock, key, bt); + if (ret) + gf_log (this->name, GF_LOG_WARNING, "Failed to save " + "the back trace for lock %s-%s granted to %s", + name, type, uuid_utoa (uuid)); + ret = 0; + } + gf_log (this->name, GF_LOG_DEBUG, "Lock for %s %s successfully held by %s", type, name, uuid_utoa (uuid)); -- cgit