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[DLM] fix add_requestqueue checking nodes list

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Requests that arrive after recovery has started are saved in the
requestqueue and processed after recovery is done.  Some of these requests
are purged during recovery if they are from nodes that have been removed.
We move the purging of the requests (dlm_purge_requestqueue) to later in
the recovery sequence which allows the routine saving requests
(dlm_add_requestqueue) to avoid filtering out requests by nodeid since the
same will be done by the purge.  The current code has add_requestqueue
filtering by nodeid but doesn't hold any locks when accessing the list of
current nodes.  This also means that we need to call the purge routine
when the lockspace is being shut down since the add routine will not be
rejecting requests itself any more.

Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
David Teigland
2006-11-27 11:31:22 -06:00
committed by Steven Whitehouse
parent dcf3dd852f
commit 2896ee37cc
3 changed files with 14 additions and 11 deletions
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16
fs/dlm/recoverd.c
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@@ -93,14 +93,6 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv)
goto fail;
}
/*
* Purge directory-related requests that are saved in requestqueue.
* All dir requests from before recovery are invalid now due to the dir
* rebuild and will be resent by the requesting nodes.
*/
dlm_purge_requestqueue(ls);
/*
* Wait for all nodes to complete directory rebuild.
*/
@@ -181,6 +173,14 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv)
dlm_release_root_list(ls);
/*
* Purge directory-related requests that are saved in requestqueue.
* All dir requests from before recovery are invalid now due to the dir
* rebuild and will be resent by the requesting nodes.
*/
dlm_purge_requestqueue(ls);
dlm_set_recover_status(ls, DLM_RS_DONE);
error = dlm_recover_done_wait(ls);
if (error) {