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Commit db07d85e authored by NeilBrown's avatar NeilBrown
Browse files

md: make sure manual changes to recovery checkpoint are saved. 



If you make an array bigger but suppress resync of the new region with
  mdadm --grow /dev/mdX --size=max --assume-clean

then stop the array before anything is written to it, the effect of
the "--assume-clean" is lost and the array will resync the new space
when restarted.
So ensure that we update the metadata in the case.

Reported-by: default avatarSebastian Riemer <sebastian.riemer@profitbricks.com>
Signed-off-by: default avatarNeilBrown <neilb@suse.de>
parent 91502f09

drivers/md/md.c

+2 −0
Original line number Diff line number Diff line
@@ -3782,6 +3782,8 @@ resync_start_store(struct mddev *mddev, const char *buf, size_t len) 
		return -EINVAL;



	mddev->recovery_cp = n;

	if (mddev->pers)

		set_bit(MD_CHANGE_CLEAN, &mddev->flags);

	return len;

}

static struct md_sysfs_entry md_resync_start =