From a58e0da4436269cdb5f40efadf94f4d02b7e8d61 Mon Sep 17 00:00:00 2001 From: Yi Zhang Date: Fri, 11 Mar 2016 17:26:40 +0800 Subject: [PATCH] Grow: analyse_change add notification about only 2-device can be convert from RAID1 to RAID5 Notify "Can only convert a 2-device array to RAID5" instead of "Impossibly level change request for RAID1" when convert from RAID1 to RAID5 if the disk num is not equal two like RAID4/5->RAID1 did. Signed-off-by: Yi Zhang Signed-off-by: Jes Sorensen --- Grow.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/Grow.c b/Grow.c index d9db00be..3204135b 100755 --- a/Grow.c +++ b/Grow.c @@ -1077,6 +1077,9 @@ char *analyse_change(char *devname, struct mdinfo *info, struct reshape *re) re->level = 1; return NULL; } + if (info->array.raid_disks != 2 && + info->new_level == 5) + return "Can only convert a 2-device array to RAID5"; if (info->array.raid_disks == 2 && info->new_level == 5) { -- 2.39.2