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ceph: attempt mds reconnect if mds closes our session

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Currently, if our session is closed (due to a timeout, or explicit close,
or whatever), we just sit there doing nothing unless/until the MDS
restarts, at which point we try to reconnect.

Change client to attempt an immediate reconnect if our session is closed.

Note that currently the MDS doesn't support this, and our attempt will
fail.  We'll get a session CLOSE, our caps and dirty cap state will be
dropped, and the client will be free to attempt to reconnect.  That's
clearly not as nice as a successful reconnect, but it at least allows us
to try to carry on, and in the future the MDS will support a reconnect
and we will fare better.

Signed-off-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Sage Weil 2010-03-18 13:59:12 -07:00
parent 34b6c855fa
commit 7e70f0ed9f
1 changed files with 3 additions and 2 deletions
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5
fs/ceph/mds_client.c
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@ -2958,9 +2958,10 @@ static void con_put(struct ceph_connection *con)
static void peer_reset(struct ceph_connection *con)
{
struct ceph_mds_session *s = con->private;
struct ceph_mds_client *mdsc = s->s_mdsc;
pr_err("mds%d gave us the boot. IMPLEMENT RECONNECT.\n",
s->s_mds);
pr_warning("mds%d closed our session\n", s->s_mds);
send_mds_reconnect(mdsc, s);
}
static void dispatch(struct ceph_connection *con, struct ceph_msg *msg)