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| author | Sage Weil <sage.weil@dreamhost.com> | 2011-07-08 09:30:29 -0700 |
|---|---|---|
| committer | Sage Weil <sage.weil@dreamhost.com> | 2011-07-08 09:48:00 -0700 |
| commit | 025748a69586bbf0615b32b9a4a30effe0ade6da (patch) | |
| tree | 66e682ef966f5496c2b7a62e47dc59497f2d6987 /src/messages | |
| parent | 4d5b05380e1b683185dd8918942973f10bbb96ae (diff) | |
| download | ceph-025748a69586bbf0615b32b9a4a30effe0ade6da.tar.gz | |
mds: implement remote_wrlock
For the rename code to behave, we need to hold a wrlock on the slave node
to ensure that any racing gather (mix->lock) is not sent prior to the
_rename_prepare() running; otherwise we violate the locking rules and
corrupt rstats.
Implement a remote_wrlock that will be used by rename. The wrlock is held
on a remote node instead of the local node, and is set up similarly to
remote_xlocks.
Signed-off-by: Sage Weil <sage.weil@dreamhost.com>
Diffstat (limited to 'src/messages')
| -rw-r--r-- | src/messages/MMDSSlaveRequest.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/messages/MMDSSlaveRequest.h b/src/messages/MMDSSlaveRequest.h index bb21d9ebae2..855088755b2 100644 --- a/src/messages/MMDSSlaveRequest.h +++ b/src/messages/MMDSSlaveRequest.h @@ -34,6 +34,10 @@ class MMDSSlaveRequest : public Message { static const int OP_RENAMEPREP = 7; static const int OP_RENAMEPREPACK = -7; + static const int OP_WRLOCK = 8; + static const int OP_WRLOCKACK = -8; + static const int OP_UNWRLOCK = 9; + static const int OP_FINISH = 17; static const int OP_COMMITTED = -18; @@ -59,6 +63,10 @@ class MMDSSlaveRequest : public Message { case OP_FINISH: return "finish"; // commit case OP_COMMITTED: return "committed"; + case OP_WRLOCK: return "wrlock"; + case OP_WRLOCKACK: return "wrlock_ack"; + case OP_UNWRLOCK: return "unwrlock"; + case OP_ABORT: return "abort"; //case OP_COMMIT: return "commit"; |