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authorLars Ellenberg <lars.ellenberg@linbit.com>2011-07-05 20:59:26 +0200
committerPhilipp Reisner <philipp.reisner@linbit.com>2012-11-08 16:57:51 +0100
commitd5d7ebd42250620a6da2a8f6943c024391433488 (patch)
tree1025faf28644b437a845f21606a1c2db83b54a3c /drivers/block/drbd/drbd_state.c
parentcdfda633d235028e9b27381dedb65416409e8729 (diff)
downloadvexpress-lsk-d5d7ebd42250620a6da2a8f6943c024391433488.tar.gz
drbd: on attach, enforce clean meta data
Detection of unclean shutdown has moved into user space. The kernel code will, whenever it updates the meta data, mark it as "unclean", and will refuse to attach to such unclean meta data. "drbdadm up" now schedules "drbdmeta apply-al", which will apply the activity log to the bitmap, and/or reinitialize it, if necessary, as well as set a "clean" indicator flag. This moves a bit code out of kernel space. As a side effect, it also prevents some 8.3 module from accidentally ignoring the 8.4 style activity log, if someone should downgrade, whether on purpose, or accidentally because he changed kernel versions without providing an 8.4 for the new kernel, and the new kernel comes with in-tree 8.3. 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_state.c')
-rw-r--r--drivers/block/drbd/drbd_state.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/block/drbd/drbd_state.c b/drivers/block/drbd/drbd_state.c
index f51cefdbeff..c4d0d96d790 100644
--- a/drivers/block/drbd/drbd_state.c
+++ b/drivers/block/drbd/drbd_state.c
@@ -1017,6 +1017,7 @@ __drbd_set_state(struct drbd_conf *mdev, union drbd_state ns,
MDF_CONNECTED_IND|MDF_WAS_UP_TO_DATE|
MDF_PEER_OUT_DATED|MDF_CRASHED_PRIMARY);
+ mdf &= ~MDF_AL_CLEAN;
if (test_bit(CRASHED_PRIMARY, &mdev->flags))
mdf |= MDF_CRASHED_PRIMARY;
if (mdev->state.role == R_PRIMARY ||