diff options
Diffstat (limited to 'drivers/block/drbd/drbd_nl.c')
| -rw-r--r-- | drivers/block/drbd/drbd_nl.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c index c5d4fac1a11..bbc5c2f4a9b 100644 --- a/drivers/block/drbd/drbd_nl.c +++ b/drivers/block/drbd/drbd_nl.c @@ -622,6 +622,8 @@ drbd_set_role(struct drbd_conf *mdev, enum drbd_role new_role, int force) /* Wait until nothing is on the fly :) */ wait_event(mdev->misc_wait, atomic_read(&mdev->ap_pending_cnt) == 0); + /* FIXME also wait for all pending P_BARRIER_ACK? */ + if (new_role == R_SECONDARY) { set_disk_ro(mdev->vdisk, true); if (get_ldev(mdev)) { @@ -1436,6 +1438,12 @@ int drbd_adm_attach(struct sk_buff *skb, struct genl_info *info) drbd_suspend_io(mdev); /* also wait for the last barrier ack. */ + /* FIXME see also https://daiquiri.linbit/cgi-bin/bugzilla/show_bug.cgi?id=171 + * We need a way to either ignore barrier acks for barriers sent before a device + * was attached, or a way to wait for all pending barrier acks to come in. + * As barriers are counted per resource, + * we'd need to suspend io on all devices of a resource. + */ wait_event(mdev->misc_wait, !atomic_read(&mdev->ap_pending_cnt) || drbd_suspended(mdev)); /* and for any other previously queued work */ drbd_flush_workqueue(mdev); |