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mds: fix MDLog recovery rare case

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This handled the case where one daemon
saw a log that was partially rewritten
by another.  It was calling the context
incorrectly (without mds_lock held)

Fixes: http://tracker.ceph.com/issues/16298
Signed-off-by: John Spray <john.spray@redhat.com>
This commit is contained in:
John Spray 2016-06-14 17:16:24 +01:00
parent 34734ced69
commit 84aa28aaa0
1 changed files with 4 additions and 0 deletions
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4
src/mds/MDLog.cc
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@ -924,6 +924,10 @@ void MDLog::_recovery_thread(MDSInternalContextBase *completion)
if (mds->is_standby_replay()) {
dout(1) << "Journal " << jp.front << " is being rewritten, "
<< "cannot replay in standby until an active MDS completes rewrite" << dendl;
Mutex::Locker l(mds->mds_lock);
if (mds->is_daemon_stopping()) {
return;
}
completion->complete(-EAGAIN);
return;
}