diff options
| author | NeilBrown <neilb@suse.de> | 2011-04-20 15:38:18 +1000 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2011-04-20 15:38:18 +1000 |
| commit | 3b71bd9337b404baab5c894e066be6b6bf51b1c3 (patch) | |
| tree | 23d29cf358319194092c41ed4748908e1b301180 | |
| parent | 2b7da309ffe602d222558cee4d7e407b96e34b3a (diff) | |
md: Fix dev_sectors on takeover from raid0 to raid4/5
A raid0 array doesn't set 'dev_sectors' as each device might
contribute a different number of sectors.
So when converting to a RAID4 or RAID5 we need to set dev_sectors
as they need the number.
We have already verified that in fact all devices do contribute
the same number of sectors, so use that number.
Signed-off-by: NeilBrown <neilb@suse.de>
| -rw-r--r-- | drivers/md/raid5.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 179bdfc4d03..fd500112f13 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -5678,6 +5678,7 @@ static void raid5_quiesce(mddev_t *mddev, int state) static void *raid45_takeover_raid0(mddev_t *mddev, int level) { struct raid0_private_data *raid0_priv = mddev->private; + unsigned long long sectors; /* for raid0 takeover only one zone is supported */ if (raid0_priv->nr_strip_zones > 1) { @@ -5686,6 +5687,9 @@ static void *raid45_takeover_raid0(mddev_t *mddev, int level) return ERR_PTR(-EINVAL); } + sectors = raid0_priv->strip_zone[0].zone_end; + sector_div(sectors, raid0_priv->strip_zone[0].nb_dev); + mddev->dev_sectors = sectors; mddev->new_level = level; mddev->new_layout = ALGORITHM_PARITY_N; mddev->new_chunk_sectors = mddev->chunk_sectors; |