md/raid0: improve error message when converting RAID4-with-spares to RAID0
Mentioning "bad disk number -1" exposes irrelevant internal detail.
Just say they are inactive and must be removed.
Signed-off-by: NeilBrown <neilb@suse.de>
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index d9babda..0505452 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -175,7 +175,13 @@
rdev1->new_raid_disk = j;
}
- if (j < 0 || j >= mddev->raid_disks) {
+ if (j < 0) {
+ printk(KERN_ERR
+ "md/raid0:%s: remove inactive devices before converting to RAID0\n",
+ mdname(mddev));
+ goto abort;
+ }
+ if (j >= mddev->raid_disks) {
printk(KERN_ERR "md/raid0:%s: bad disk number %d - "
"aborting!\n", mdname(mddev), j);
goto abort;