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authorKrishnan Parthasarathi <kparthas@redhat.com>2013-04-15 22:07:21 +0530
committerVijay Bellur <vbellur@redhat.com>2013-04-16 10:42:51 -0700
commitdcebed550ebfc878b0b3bd02ab7fe15db6764f81 (patch)
tree2387f207399a9d3b430a492fdce173d17b92d714 /xlators/mgmt/glusterd/src/glusterd-op-sm.h
parent9eb8fc771b32c0601969537ad7135edd89e49cf9 (diff)
glusterd: Avoided deadlock in single node cluster, glusterd restart
In a single node cluster, it is possible to deadlock on the "big lock", while restarting bricks. In glusterd_restart_bricks, we perform a glusterd_brick_connect, where we release the big lock in anticipation that glusterd_brick_rpc_notify could run in the same C stack (and deadlocking). So, in the restart code path, we could unlock before we have performed a lock on the big lock. To fix this, we need to take the big lock in the glusterd_launch_synctask 'thread' as well. Change-Id: I1abea1ca82b55c784b8a810a8194f254b32b1dcc BUG: 948686 Signed-off-by: Krishnan Parthasarathi <kparthas@redhat.com> Reviewed-on: http://review.gluster.org/4837 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
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