Takeover raid1->raid0 not succeded. Kernel message is shown:
"md/raid0:md126: too few disks (1 of 2) - aborting!"
After takeover process we have only one active disk
(rest of raid1's disks have been removed before takeover)
mddev->raid_disks stores initial number of disks so comparing
mddev->raid_disks with "cnt" calculated in create_strip_zones()
returns error.
Patch introduces fix for this- skip comparing number of disk if
takeover is detected.
Signed-off-by: Krzysztof Wojcik <krzysztof.wojcik@xxxxxxxxx>
---
drivers/md/raid0.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index 637a968..9255d52 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -215,7 +215,8 @@ static int create_strip_zones(mddev_t *mddev, raid0_conf_t **private_conf)
smallest = rdev1;
cnt++;
}
- if (cnt != mddev->raid_disks) {
+ /* compare number of disk if not taking over raid1 */
+ if ((cnt != mddev->raid_disks) && (mddev->level != 1)) {
printk(KERN_ERR "md/raid0:%s: too few disks (%d of %d) - "
"aborting!\n", mdname(mddev), cnt, mddev->raid_disks);
goto abort;
--
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