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authorPhilipp Reisner <philipp.reisner@linbit.com>2010-03-02 15:03:44 +0100
committerPhilipp Reisner <philipp.reisner@linbit.com>2010-03-11 16:09:03 +0100
commit309d1608cce32903d67d47e7545e232c400b6aa0 (patch)
tree98a201235ac87dce320cef6401e782d34bfb29b0 /drivers/block/drbd
parentc42b6cf4b38c9726d4b46c48d04197c9ca74d773 (diff)
drbd: Reduce the time an empty resync takes usually
This mitigates changes introduced with commit: http://git.drbd.org/?p=drbd-8.3.git;a=commit;h=4b6803a3276652da3737 Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'drivers/block/drbd')
-rw-r--r--drivers/block/drbd/drbd_int.h1
-rw-r--r--drivers/block/drbd/drbd_receiver.c2
-rw-r--r--drivers/block/drbd/drbd_worker.c12
3 files changed, 12 insertions, 3 deletions
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index 844206c31851..2d5cebbbf253 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -800,6 +800,7 @@ enum {
RESIZE_PENDING, /* Size change detected locally, waiting for the response from
* the peer, if it changed there as well. */
CONN_DRY_RUN, /* Expect disconnect after resync handshake. */
+ GOT_PING_ACK, /* set when we receive a ping_ack packet, misc wait gets woken */
};
struct drbd_bitmap; /* opaque for drbd_conf */
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index d803e6c257e2..ed9f1de24a71 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -4074,6 +4074,8 @@ static int got_PingAck(struct drbd_conf *mdev, struct p_header *h)
{
/* restore idle timeout */
mdev->meta.socket->sk->sk_rcvtimeo = mdev->net_conf->ping_int*HZ;
+ if (!test_and_set_bit(GOT_PING_ACK, &mdev->flags))
+ wake_up(&mdev->misc_wait);
return TRUE;
}
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
index d97a811ad0d2..4672f2f37b51 100644
--- a/drivers/block/drbd/drbd_worker.c
+++ b/drivers/block/drbd/drbd_worker.c
@@ -1289,6 +1289,14 @@ int drbd_alter_sa(struct drbd_conf *mdev, int na)
return retcode;
}
+static void ping_peer(struct drbd_conf *mdev)
+{
+ clear_bit(GOT_PING_ACK, &mdev->flags);
+ request_ping(mdev);
+ wait_event(mdev->misc_wait,
+ test_bit(GOT_PING_ACK, &mdev->flags) || mdev->state.conn < C_CONNECTED);
+}
+
/**
* drbd_start_resync() - Start the resync process
* @mdev: DRBD device.
@@ -1383,9 +1391,7 @@ void drbd_start_resync(struct drbd_conf *mdev, enum drbd_conns side)
if (mdev->rs_total == 0) {
/* Peer still reachable? Beware of failing before-resync-target handlers! */
- request_ping(mdev);
- __set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(mdev->net_conf->ping_timeo*HZ/9); /* 9 instead 10 */
+ ping_peer(mdev);
drbd_resync_finished(mdev);
return;
}