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ceph: skip reconnecting if MDS is not ready

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When MDS closed the session the kclient will send to reconnect to
it immediately, but if the MDS just restarted and still not ready
yet, such as still in the up:replay state and the sessionmap journal
logs hasn't be replayed, the MDS will close the session.

And then the kclient could remove the session and later when the
mdsmap is in RECONNECT phrase it will skip reconnecting. But the MDS
will wait until timeout and then evict the kclient.

Just skip sending the reconnection request until the MDS is ready.

Link: https://tracker.ceph.com/issues/62489
Signed-off-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Xiubo Li 2023-08-24 17:55:51 +08:00 committed by Ilya Dryomov
parent 0dd3ee3112
commit cbcb358b74
1 changed files with 2 additions and 1 deletions
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3
fs/ceph/mds_client.c
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@ -5870,7 +5870,8 @@ static void mds_peer_reset(struct ceph_connection *con)
pr_warn_client(mdsc->fsc->client, "mds%d closed our session\n",
s->s_mds);
if (READ_ONCE(mdsc->fsc->mount_state) != CEPH_MOUNT_FENCE_IO)
if (READ_ONCE(mdsc->fsc->mount_state) != CEPH_MOUNT_FENCE_IO &&
ceph_mdsmap_get_state(mdsc->mdsmap, s->s_mds) >= CEPH_MDS_STATE_RECONNECT)
send_mds_reconnect(mdsc, s);
}