Commit 8dee7211 authored Nov 06, 2009 by NeilBrown

md/raid5: make sure curr_sync_completes is uptodate when reshape starts



This value is visible through sysfs and is used by mdadm
when it manages a reshape (backing up data that is about to be
rearranged).  So it is important that it is always correct.
Current it does not get updated properly when a reshape
starts which can cause problems when assembling an array
that is in the middle of being reshaped.

This is suitable for 2.6.31.y stable kernels.

Cc: stable@kernel.org
Signed-off-by: NeilBrown <neilb@suse.de>

parent 24395a85

drivers/md/raid5.c

+2 −0

Original line number	Original line	Diff line number	Diff line
	@@ -4049,6 +4049,8 @@ static sector_t reshape_request(mddev_t mddev, sector_t sector_nr, int skipped
	sector_nr = conf->reshape_progress;		sector_nr = conf->reshape_progress;
	sector_div(sector_nr, new_data_disks);		sector_div(sector_nr, new_data_disks);
	if (sector_nr) {		if (sector_nr) {
			mddev->curr_resync_completed = sector_nr;
			sysfs_notify(&mddev->kobj, NULL, "sync_completed");
	*skipped = 1;		*skipped = 1;
	return sector_nr;		return sector_nr;
	}		}

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