Hi,
This serial of patches is to fix the dis-order issue of
setting/clearing refmap bit described below.
Node 1 Node 2(master)
dlmlock
dlm_do_master_request
dlm_master_request_handler
-> dlm_lockres_set_refmap_bit
dlmlock succeed
dlmunlock succeed
dlm_purge_lockres
dlm_deref_handler
-> find lock resource is in
DLM_LOCK_RES_SETREF_INPROG state,
so dispatch a deref work
dlm_purge_lockres succeed.
call dlmlock again
dlm_do_master_request
dlm_master_request_handler
-> dlm_lockres_set_refmap_bit
deref work trigger, call
dlm_lockres_clear_refmap_bit
to clear Node 1 from refmap
dlm_purge_lockres succeed
dlm_send_remote_lock_request
return DLM_IVLOCKID because
the lockres is not exist
BUG if the lockres is $RECOVERY
This serial of patches add a new message to keep the order of set and
clear. Other nodes can purge the lock resource only after the refmap
bit on master is cleared.
Jiufei Xue (4):
ocfs2/dlm: add DEREF_DONE message
ocfs2/dlm: return in progress if master can not clear the refmap
bit right now
ocfs2/dlm: clear DROPPING_REF flag when the master down
ocfs2/dlm: return EINVAL when the lockres on migration target is
in DROPPING_REF state
dlmcommon.h | 17 +++++++
dlmdomain.c | 11 ++++-
dlmmaster.c | 124 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++--
dlmrecovery.c | 32 ++++++++++----
dlmthread.c | 7 +++
5 files changed, 178 insertions(+), 13 deletions(-)
Thanks,
Jiufei Xue
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