cluster: RHEL6 - dlm_controld: fix plock signature in stored message

Gitweb: http://git.fedorahosted.org/git/cluster.git?p=cluster.git;a=commitdiff;h=... Commit: 4528ab5583ae25910b82795884520033651fc405 Parent: 597111c711eeded2a9c6579064ce25de6ae0ab1b Author: David Teigland <teigland(a)redhat.com&gt; AuthorDate: Thu Aug 12 14:51:02 2010 -0500 Committer: David Teigland <teigland(a)redhat.com&gt; CommitterDate: Thu Aug 12 16:04:42 2010 -0500 dlm_controld: fix plock signature in stored message When confchg's change the ckpt_node between plock checkpoints being written, and the plocks_stored message being received, the plocks_stored message is resent by the new ckpt_node that didn't write the checkpoint. The new ckpt_node needs to save the plock checkpoint signature that was sent in the first plocks_stored message from the checkpoint writer, and reuse it when sending the new plocks_stored method. Otherwise the plock signature in the stored message will be invalid. bz 623816 Signed-off-by: David Teigland <teigland(a)redhat.com&gt; --- group/dlm_controld/cpg.c | 8 +++++++- group/dlm_controld/dlm_daemon.h | 1 + 2 files changed, 8 insertions(+), 1 deletions(-) diff --git a/group/dlm_controld/cpg.c b/group/dlm_controld/cpg.c index a9cc61e..899d23e 100644 --- a/group/dlm_controld/cpg.c +++ b/group/dlm_controld/cpg.c @@ -1099,6 +1099,8 @@ static void receive_plocks_stored(struct lockspace *ls, struct dlm_header *hd, "need_plocks %d", hd->nodeid, hd->msgdata, hd->flags, hd->msgdata2, ls->need_plocks); + ls->last_plock_sig = hd->msgdata2; + if (!ls->need_plocks) return; @@ -1329,8 +1331,12 @@ static void prepare_plocks(struct lockspace *ls) the previous stored message. They will read the ckpt from the previous ckpt_node upon receiving the stored message from us. */ - if (nodes_added(ls)) + if (nodes_added(ls)) { store_plocks(ls, &sig); + ls->last_plock_sig = sig; + } else { + sig = ls->last_plock_sig; + } send_plocks_stored(ls, sig); } diff --git a/group/dlm_controld/dlm_daemon.h b/group/dlm_controld/dlm_daemon.h index c2423d2..6f7711a 100644 --- a/group/dlm_controld/dlm_daemon.h +++ b/group/dlm_controld/dlm_daemon.h @@ -220,6 +220,7 @@ struct lockspace { uint64_t checkpoint_r_num_last; uint32_t checkpoint_r_count; uint32_t checkpoint_p_count; + uint32_t last_plock_sig; /* save copy of groupd member callback data for queries */