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authorSunil Mushran <sunil.mushran@oracle.com>2010-01-25 17:58:30 -0800
committerJoel Becker <joel.becker@oracle.com>2010-02-02 18:56:34 -0800
commitcd34edd8cf80b507bb84b3f0c2988fe05099ffb5 (patch)
treef6efa7606dbddb08938b1a887ab04e3ef2c6e916 /fs/ocfs2/dlm
parent60c486744c9a30ea60fa863e9587242dde2fe4bd (diff)
downloadop-kernel-dev-cd34edd8cf80b507bb84b3f0c2988fe05099ffb5.zip
op-kernel-dev-cd34edd8cf80b507bb84b3f0c2988fe05099ffb5.tar.gz
ocfs2/dlm: Handle EAGAIN for compatibility - v2
Mainline commit aad1b15310b9bcd59fa81ab8f2b1513b59553ea8 made the dlm_begin_reco_handler() return -EAGAIN instead of EAGAIN. As this error is transmitted over the wire, we want the receiver, dlm_send_begin_reco_message(), to understand both the older EAGAIN and the newer -EAGAIN, to allow rolling upgrade of the cluster nodes. Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
Diffstat (limited to 'fs/ocfs2/dlm')
-rw-r--r--fs/ocfs2/dlm/dlmrecovery.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c
index cfb2ae9..ad71221 100644
--- a/fs/ocfs2/dlm/dlmrecovery.c
+++ b/fs/ocfs2/dlm/dlmrecovery.c
@@ -2639,7 +2639,13 @@ retry:
"begin reco msg (%d)\n", dlm->name, nodenum, ret);
ret = 0;
}
- if (ret == -EAGAIN) {
+
+ /*
+ * Prior to commit aad1b15310b9bcd59fa81ab8f2b1513b59553ea8,
+ * dlm_begin_reco_handler() returned EAGAIN and not -EAGAIN.
+ * We are handling both for compatibility reasons.
+ */
+ if (ret == -EAGAIN || ret == EAGAIN) {
mlog(0, "%s: trying to start recovery of node "
"%u, but node %u is waiting for last recovery "
"to complete, backoff for a bit\n", dlm->name,
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