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ceph: renew mon subscription before it expires 

Be conservative: renew subscription once half the interval has expired.

Do not reuse sub expiration to control hunting.

Signed-off-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Sage Weil 2009-10-08 10:25:46 -07:00
parent e251e28808
commit 0656d11ba6
1 changed files with 2 additions and 2 deletions
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4
fs/ceph/mon_client.c
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@ -213,7 +213,7 @@ static void handle_subscribe_ack(struct ceph_mon_client *monc,
monc->hunting = false;
}
dout("handle_subscribe_ack after %d seconds\n", seconds);
monc->sub_renew_after = monc->sub_sent + seconds*HZ - 1;
monc->sub_renew_after = monc->sub_sent + (seconds >> 1)*HZ - 1;
monc->sub_sent = 0;
mutex_unlock(&monc->mutex);
return;
@ -512,7 +512,7 @@ static void delayed_work(struct work_struct *work)
if (monc->want_mount) {
__request_mount(monc);
} else {
if (__sub_expired(monc)) {
if (monc->hunting) {
__close_session(monc);
__open_session(monc); /* continue hunting */
} else {