hi
We found a BUG situation described below. To fix the bug, I think
dlm_drop_lockres_ref should be 0 in the case of dlm_is_host_down(master goes
down).
or list_del_init(&res->purge) should be behind the !master && ret != 0 return,
the res will release int the recovery process while umounting the vol.
Thanks
detail:
Node 1
Node 2(master)
dlm_purge_lockres
dlm_drop_lockres_ref
master goes down
list_del_init(&res->purge)
!master && ret != 0 return
get a failure while umounting.
ocfs2/dlm: return in progress if master can not clear the refmap bit right now
Master returns in-progress to non-master node when it can not clear the refmap
bit right now. And non-master node will not purge the lock resource until
receiving deref done message.
________________________________
zhangguanghui
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