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| author | Kurt Hackel <kurt.hackel@oracle.com> | 2006-01-18 17:01:25 -0800 |
|---|---|---|
| committer | Mark Fasheh <mark.fasheh@oracle.com> | 2006-02-16 12:00:16 -0800 |
| commit | 898efface1a5076cbae5af87b935212b1869971b (patch) | |
| tree | 7d8cf71f88238ccdcc2fc537087dbe3643815470 /fs/ocfs2 | |
| parent | 90f9dd8f72773152b69042debd6b9ed6d224703a (diff) | |
| download | lwn-898efface1a5076cbae5af87b935212b1869971b.tar.gz lwn-898efface1a5076cbae5af87b935212b1869971b.zip | |
[PATCH] ocfs2: recheck recovery state after getting lock
* after successfully taking the $RECOVERY lock in EX mode, recheck to make
sure that recovery has not already begun or completed on another node
Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Diffstat (limited to 'fs/ocfs2')
| -rw-r--r-- | fs/ocfs2/dlm/dlmrecovery.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c index 186e9a76aa58..f9ce864966ec 100644 --- a/fs/ocfs2/dlm/dlmrecovery.c +++ b/fs/ocfs2/dlm/dlmrecovery.c @@ -2032,6 +2032,30 @@ again: dlm->reco.new_master); status = -EEXIST; } else { + status = 0; + + /* see if recovery was already finished elsewhere */ + spin_lock(&dlm->spinlock); + if (dlm->reco.dead_node == O2NM_INVALID_NODE_NUM) { + status = -EINVAL; + mlog(0, "%s: got reco EX lock, but " + "node got recovered already\n", dlm->name); + if (dlm->reco.new_master != O2NM_INVALID_NODE_NUM) { + mlog(ML_ERROR, "%s: new master is %u " + "but no dead node!\n", + dlm->name, dlm->reco.new_master); + BUG(); + } + } + spin_unlock(&dlm->spinlock); + } + + /* if this node has actually become the recovery master, + * set the master and send the messages to begin recovery */ + if (!status) { + mlog(0, "%s: dead=%u, this=%u, sending " + "begin_reco now\n", dlm->name, + dlm->reco.dead_node, dlm->node_num); status = dlm_send_begin_reco_message(dlm, dlm->reco.dead_node); /* this always succeeds */ |