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ceph: fix mds cluster availability check 

We should apply the check after getting the initial mdsmap.

Fixes: e9e427f0a1 ("ceph: check availability of mds cluster on mount")
Link: http://tracker.ceph.com/issues/18161
Signed-off-by: Yan, Zheng <zyan@redhat.com>
This commit is contained in:
Yan, Zheng 2017-01-04 16:21:58 +08:00 committed by Ilya Dryomov
parent a121103c92
commit cc8e834293
1 changed files with 5 additions and 0 deletions
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5
fs/ceph/mds_client.c
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@ -2106,6 +2106,11 @@ static int __do_request(struct ceph_mds_client *mdsc,
dout("do_request mdsmap err %d\n", err);
goto finish;
}
if (mdsc->mdsmap->m_epoch == 0) {
dout("do_request no mdsmap, waiting for map\n");
list_add(&req->r_wait, &mdsc->waiting_for_map);
goto finish;
}
if (!(mdsc->fsc->mount_options->flags &
CEPH_MOUNT_OPT_MOUNTWAIT) &&
!ceph_mdsmap_is_cluster_available(mdsc->mdsmap)) {