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| author | Lars Ellenberg <lars.ellenberg@linbit.com> | 2011-07-05 20:59:26 +0200 |
|---|---|---|
| committer | Philipp Reisner <philipp.reisner@linbit.com> | 2012-11-08 16:57:51 +0100 |
| commit | d5d7ebd42250620a6da2a8f6943c024391433488 (patch) | |
| tree | 1025faf28644b437a845f21606a1c2db83b54a3c /drivers/block/drbd/drbd_int.h | |
| parent | drbd: detach from frozen backing device (diff) | |
| download | linux-d5d7ebd42250620a6da2a8f6943c024391433488.tar.xz linux-d5d7ebd42250620a6da2a8f6943c024391433488.zip | |
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_int.h')
| -rw-r--r-- | drivers/block/drbd/drbd_int.h | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h index 4e582058a7c9..9d0d6d0fb820 100644 --- a/drivers/block/drbd/drbd_int.h +++ b/drivers/block/drbd/drbd_int.h @@ -164,10 +164,6 @@ drbd_insert_fault(struct drbd_conf *mdev, unsigned int type) { /* usual integer division */ #define div_floor(A, B) ((A)/(B)) -/* drbd_meta-data.c (still in drbd_main.c) */ -/* 4th incarnation of the disk layout. */ -#define DRBD_MD_MAGIC (DRBD_MAGIC+4) - extern struct ratelimit_state drbd_ratelimit_state; extern struct idr minors; /* RCU, updates: genl_lock() */ extern struct list_head drbd_tconns; /* RCU, updates: genl_lock() */ @@ -1560,7 +1556,6 @@ extern void drbd_rs_cancel_all(struct drbd_conf *mdev); extern int drbd_rs_del_all(struct drbd_conf *mdev); extern void drbd_rs_failed_io(struct drbd_conf *mdev, sector_t sector, int size); -extern int drbd_al_read_log(struct drbd_conf *mdev, struct drbd_backing_dev *); extern void drbd_advance_rs_marks(struct drbd_conf *mdev, unsigned long still_to_go); extern void __drbd_set_in_sync(struct drbd_conf *mdev, sector_t sector, int size, const char *file, const unsigned int line); @@ -1570,7 +1565,6 @@ extern int __drbd_set_out_of_sync(struct drbd_conf *mdev, sector_t sector, int size, const char *file, const unsigned int line); #define drbd_set_out_of_sync(mdev, sector, size) \ __drbd_set_out_of_sync(mdev, sector, size, __FILE__, __LINE__) -extern void drbd_al_apply_to_bm(struct drbd_conf *mdev); extern void drbd_al_shrink(struct drbd_conf *mdev); /* drbd_nl.c */ |