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authorPhilipp Reisner <philipp.reisner@linbit.com>2012-08-28 16:48:03 +0200
committerPhilipp Reisner <philipp.reisner@linbit.com>2012-11-09 14:11:08 +0100
commit19fffd7b0303e8843aa2decfd43fa57c9d511409 (patch)
tree19ac111fafeec46eac2b0e8cee4f41f4327a1129 /drivers/block/drbd/drbd_main.c
parentd76440181d0e05826f228189b74b4dbf64b68981 (diff)
downloadlinux-19fffd7b0303e8843aa2decfd43fa57c9d511409.tar.gz
drbd: Call drbd_md_sync() explicitly after a state change on the connection
Without this, the meta-data gets updates after 5 seconds by the md_sync_timer. Better to do it immeditaly after a state change. If the asender detects a network failure, it may take a bit until the worker processes the according after-conn-state-change work item. The worker might be blocked in sending something, i.e. it takes until it gets into its timeout. That is 6 seconds by default which is longer than the 5 seconds of the md_sync_timer. Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'drivers/block/drbd/drbd_main.c')
-rw-r--r--drivers/block/drbd/drbd_main.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 732053de1db..5e5a6abb281 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -2820,6 +2820,22 @@ void drbd_free_sock(struct drbd_tconn *tconn)
/* meta data management */
+void conn_md_sync(struct drbd_tconn *tconn)
+{
+ struct drbd_conf *mdev;
+ int vnr;
+
+ rcu_read_lock();
+ idr_for_each_entry(&tconn->volumes, mdev, vnr) {
+ kref_get(&mdev->kref);
+ rcu_read_unlock();
+ drbd_md_sync(mdev);
+ kref_put(&mdev->kref, &drbd_minor_destroy);
+ rcu_read_lock();
+ }
+ rcu_read_unlock();
+}
+
struct meta_data_on_disk {
u64 la_size; /* last agreed size. */
u64 uuid[UI_SIZE]; /* UUIDs. */