Commit 7a91ee1f authored by NeilBrown's avatar 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: default avatarNeilBrown <neilb@suse.de>
parent 848b3182
......@@ -6362,12 +6362,13 @@ void md_do_sync(mddev_t *mddev)
skipped = 0;
if ((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
) {
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,
......
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