From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Busby Subject: Re: Raid5 to another raid level?? Date: Mon, 10 Oct 2011 22:47:58 +0100 Message-ID: References: <-7602537176266265843@unknownmsgid> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: neilb@suse.de Cc: john.robinson@anonymous.org.uk, linux-raid@vger.kernel.org List-Id: linux-raid.ids I have a quick question i remember reading somewhere about not using metadata version 0.9 with drives larger than 2tb, > at the moment i have the following > > root@BlueBolt:~# cat /proc/mdstat > Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] = [raid4] [raid10] > md0 : active raid5 sdd[2] sde[0] sdb[3] sdc[1] > =A0 =A0 =A0 5860543488 blocks level 5, 512k chunk, algorithm 2 [4/4] = [UUUU] > =A0 =A0 =A0 bitmap: 2/15 pages [8KB], 65536KB chunk > unused devices: > root@BlueBolt:~# mdadm --detail /dev/md0 > /dev/md0: > =A0 =A0 =A0 =A0 Version : 0.90 > =A0 Creation Time : Mon Jul =A04 15:08:38 2011 > =A0 =A0 =A0Raid Level : raid5 > =A0 =A0 =A0Array Size : 5860543488 (5589.05 GiB 6001.20 GB) > =A0 Used Dev Size : 1953514496 (1863.02 GiB 2000.40 GB) > =A0 =A0Raid Devices : 4 > =A0 Total Devices : 4 > Preferred Minor : 0 > =A0 =A0 Persistence : Superblock is persistent > =A0 Intent Bitmap : Internal > =A0 =A0 Update Time : Mon Oct 10 22:44:11 2011 > =A0 =A0 =A0 =A0 =A0 State : active > =A0Active Devices : 4 > Working Devices : 4 > =A0Failed Devices : 0 > =A0 Spare Devices : 0 > =A0 =A0 =A0 =A0 =A0Layout : left-symmetric > =A0 =A0 =A0Chunk Size : 512K > =A0 =A0 =A0 =A0 =A0 =A0UUID : ddab6c38:dee3ead0:95ba4558:1c9a49ed (lo= cal to host BlueBolt) > =A0 =A0 =A0 =A0 =A0Events : 0.2836102 > =A0 =A0 Number =A0 Major =A0 Minor =A0 RaidDevice State > =A0 =A0 =A0 =A00 =A0 =A0 =A0 8 =A0 =A0 =A0 64 =A0 =A0 =A0 =A00 =A0 =A0= =A0active sync =A0 /dev/sde > =A0 =A0 =A0 =A01 =A0 =A0 =A0 8 =A0 =A0 =A0 32 =A0 =A0 =A0 =A01 =A0 =A0= =A0active sync =A0 /dev/sdc > =A0 =A0 =A0 =A02 =A0 =A0 =A0 8 =A0 =A0 =A0 48 =A0 =A0 =A0 =A02 =A0 =A0= =A0active sync =A0 /dev/sdd > =A0 =A0 =A0 =A03 =A0 =A0 =A0 8 =A0 =A0 =A0 16 =A0 =A0 =A0 =A03 =A0 =A0= =A0active sync =A0 /dev/sdb > which as you can see if using 0.90, i am looking at replacing all the= 2tb drives with 3tb versions, would i need to update the metadata vers= ion? if so how can i go about this? > thanks > Mike -- To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html