From: Hans Kraus <hans@hanswkraus.com>
To: linux-raid@vger.kernel.org
Subject: mdadm Raid level change from 1 to 5?
Date: Fri, 08 May 2015 11:18:44 +0200 [thread overview]
Message-ID: <554C7F74.5010404@hanswkraus.com> (raw)
Hi,
I have a Raid 1 with 3 drives, the following layout (the internal
bitmap is already removed):
-----------------------------------------------------------------
md20 : active raid1 sdj1[2] sdi1[1] sdn1[0]
732442432 blocks super 1.2 [3/3] [UUU]
-----------------------------------------------------------------
I tried to change it to Raid 5, but I'm getting aways an error.
-----------------------------------------------------------------
mdadm --grow /dev/md20 --level=5 --raid-devices=3 -c 32 \
--backup-file=/home/kraush/work/raidLevelChange
Impossibly level change request for RAID1
-----------------------------------------------------------------
I tried it with various permutations (+/- raid-devices, c, ...).
Is something in my command wrong or is the level change not
possible?
This is on Debian 7, mdadm - v3.3-65-g2167de7 - 11th March 2014
Regards, Hans
next reply other threads:[~2015-05-08 9:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-08 9:18 Hans Kraus [this message]
2015-05-08 10:47 ` mdadm Raid level change from 1 to 5? Robin Hill
2015-05-09 8:58 ` Hans Kraus
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