Commit 7a91ee1f authored May 26, 2009 by NeilBrown

md: don't update curr_resync_completed without also updating reshape_position.



In order for the metadata to always be consistent, we mustn't updated
curr_resync_completed without also updating reshape_position.

The reshape code updates both at the same time.  However since
commit 97e4f42d
the common md_do_sync will sometimes update curr_resync_completed
but is not in a position to update reshape_position.
So if MD_RECOVERY_RESHAPE is set (indicating that a reshape is
happening, so reshape_position might change), don't update
curr_resync_completed in md_do_sync, leave it to the per-personality
reshape code.

Signed-off-by: NeilBrown <neilb@suse.de>

parent 848b3182

drivers/md/md.c

+7 −6

Original line number	Diff line number	Diff line
		@@ -6362,12 +6362,13 @@ void md_do_sync(mddev_t *mddev)

		skipped = 0;

		if ((mddev->curr_resync > mddev->curr_resync_completed &&
		if (!test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery) &&
		((mddev->curr_resync > mddev->curr_resync_completed &&
		(mddev->curr_resync - mddev->curr_resync_completed)
		> (max_sectors >> 4)) \|\|
		(j - mddev->curr_resync_completed)*2
		>= mddev->resync_max - mddev->curr_resync_completed
		) {
		)) {
		/* time to update curr_resync_completed */
		blk_unplug(mddev->queue);
		wait_event(mddev->recovery_wait,