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authorPhilipp Reisner <philipp.reisner@linbit.com>2010-05-19 17:37:02 +0200
committerJens Axboe <jens.axboe@oracle.com>2010-05-21 21:12:00 +0200
commit4604d6366859f781ad16c07a6c65b16fc96e26c5 (patch)
tree85cf6c3c004c6ab7015d247c69eda699df2dfa2a /drivers
parent31a31dccdd308d5ec7f9a1197a7875a246a348dc (diff)
downloadlinux-4604d6366859f781ad16c07a6c65b16fc96e26c5.tar.bz2
drbd: Ensure to not trigger late-new-UUID creation multiple times
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/block/drbd/drbd_main.c18
1 files changed, 11 insertions, 7 deletions
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 7e057b074bbd..a949fc45f7ef 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -1217,7 +1217,8 @@ static void after_state_ch(struct drbd_conf *mdev, union drbd_state os,
mdev->p_uuid = NULL;
if (get_ldev(mdev)) {
if ((ns.role == R_PRIMARY || ns.peer == R_PRIMARY) &&
- mdev->ldev->md.uuid[UI_BITMAP] == 0 && ns.disk >= D_UP_TO_DATE)
+ mdev->ldev->md.uuid[UI_BITMAP] == 0 && ns.disk >= D_UP_TO_DATE &&
+ !atomic_read(&mdev->new_c_uuid))
atomic_set(&mdev->new_c_uuid, 2);
put_ldev(mdev);
}
@@ -1225,7 +1226,8 @@ static void after_state_ch(struct drbd_conf *mdev, union drbd_state os,
if (ns.pdsk < D_INCONSISTENT && get_ldev(mdev)) {
/* Diskless peer becomes primary or got connected do diskless, primary peer. */
- if (ns.peer == R_PRIMARY && mdev->ldev->md.uuid[UI_BITMAP] == 0)
+ if (ns.peer == R_PRIMARY && mdev->ldev->md.uuid[UI_BITMAP] == 0 &&
+ !atomic_read(&mdev->new_c_uuid))
atomic_set(&mdev->new_c_uuid, 2);
/* D_DISKLESS Peer becomes secondary */
@@ -1353,12 +1355,14 @@ static void after_state_ch(struct drbd_conf *mdev, union drbd_state os,
static int w_new_current_uuid(struct drbd_conf *mdev, struct drbd_work *w, int cancel)
{
if (get_ldev(mdev)) {
- drbd_uuid_new_current(mdev);
- if (get_net_conf(mdev)) {
- drbd_send_uuids(mdev);
- put_net_conf(mdev);
+ if (mdev->ldev->md.uuid[UI_BITMAP] == 0) {
+ drbd_uuid_new_current(mdev);
+ if (get_net_conf(mdev)) {
+ drbd_send_uuids(mdev);
+ put_net_conf(mdev);
+ }
+ drbd_md_sync(mdev);
}
- drbd_md_sync(mdev);
put_ldev(mdev);
}
atomic_dec(&mdev->new_c_uuid);