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-rw-r--r--drivers/md/raid0.c21
1 files changed, 11 insertions, 10 deletions
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index e70f004c99e8..563abed5a2cb 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -173,9 +173,11 @@ static int create_strip_zones(mddev_t *mddev, raid0_conf_t **private_conf)
list_for_each_entry(rdev1, &mddev->disks, same_set) {
int j = rdev1->raid_disk;
- if (mddev->level == 10)
+ if (mddev->level == 10) {
/* taking over a raid10-n2 array */
j /= 2;
+ rdev1->new_raid_disk = j;
+ }
if (j < 0 || j >= mddev->raid_disks) {
printk(KERN_ERR "md/raid0:%s: bad disk number %d - "
@@ -361,12 +363,6 @@ static int raid0_run(mddev_t *mddev)
mddev->private = conf;
}
conf = mddev->private;
- if (conf->scale_raid_disks) {
- int i;
- for (i=0; i < conf->strip_zone[0].nb_dev; i++)
- conf->devlist[i]->raid_disk /= conf->scale_raid_disks;
- /* FIXME update sysfs rd links */
- }
/* calculate array device size */
md_set_array_sectors(mddev, raid0_size(mddev, 0, 0));
@@ -573,7 +569,7 @@ static void raid0_status(struct seq_file *seq, mddev_t *mddev)
return;
}
-static void *raid0_takeover_raid5(mddev_t *mddev)
+static void *raid0_takeover_raid45(mddev_t *mddev)
{
mdk_rdev_t *rdev;
raid0_conf_t *priv_conf;
@@ -596,6 +592,7 @@ static void *raid0_takeover_raid5(mddev_t *mddev)
/* Set new parameters */
mddev->new_level = 0;
+ mddev->new_layout = 0;
mddev->new_chunk_sectors = mddev->chunk_sectors;
mddev->raid_disks--;
mddev->delta_disks = -1;
@@ -635,6 +632,7 @@ static void *raid0_takeover_raid10(mddev_t *mddev)
/* Set new parameters */
mddev->new_level = 0;
+ mddev->new_layout = 0;
mddev->new_chunk_sectors = mddev->chunk_sectors;
mddev->delta_disks = - mddev->raid_disks / 2;
mddev->raid_disks += mddev->delta_disks;
@@ -643,19 +641,22 @@ static void *raid0_takeover_raid10(mddev_t *mddev)
mddev->recovery_cp = MaxSector;
create_strip_zones(mddev, &priv_conf);
- priv_conf->scale_raid_disks = 2;
return priv_conf;
}
static void *raid0_takeover(mddev_t *mddev)
{
/* raid0 can take over:
+ * raid4 - if all data disks are active.
* raid5 - providing it is Raid4 layout and one disk is faulty
* raid10 - assuming we have all necessary active disks
*/
+ if (mddev->level == 4)
+ return raid0_takeover_raid45(mddev);
+
if (mddev->level == 5) {
if (mddev->layout == ALGORITHM_PARITY_N)
- return raid0_takeover_raid5(mddev);
+ return raid0_takeover_raid45(mddev);
printk(KERN_ERR "md/raid0:%s: Raid can only takeover Raid5 with layout: %d\n",
mdname(mddev), ALGORITHM_PARITY_N);