From: Luca Berra <bluca@comedia.it>
To: linux-raid@vger.kernel.org
Subject: Re: mdadm raid6->LVM->ext4 setup
Date: Tue, 16 Nov 2010 23:17:22 +0100 [thread overview]
Message-ID: <20101116221722.GC8943@maude.comedia.it> (raw)
In-Reply-To: <4CE2C8AC.7010103@geograph.co.za>
On Tue, Nov 16, 2010 at 08:08:44PM +0200, Zoltan Szecsei wrote:
> *** Setup:
> 8 * 5900RPM Seagte 2TB drives on SiI3132 PCIx x1 card.
> Linux gs0 2.6.32-25-generic #45-Ubuntu SMP Sat Oct 16 19:52:42 UTC 2010
> x86_64 GNU/Linux
> mdadm - v3.1.4 - 31st August 2010
> LVM version: 2.02.54(1) (2009-10-26)
> Library version: 1.02.39 (2009-10-26)
> Driver version: 4.15.0
> mke2fs 1.41.11 (14-Mar-2010)
>
> *** Commands used:
> mdadm --create /dev/md0 --metadata=1.2 --auto=md --assume-clean
> --bitmap=internal --bitmap-chunk=131072 --chunk=512 --level=6
> --raid-devices=8 /dev/sd[abcdefgh]
> mdadm --detail --scan >> /etc/mdadm.conf
> mdadm --assemble /dev/md0
as i said this is not useful
> pvcreate --metadatasize 512 /dev/md0
you should use --dataalignment, not --metadatasize, also you should
align to a full stripe
> vgcreate geo_vg0 /dev/md0
> lvcreate -n geo_lvm0 -l 100%FREE geo_vg0
> mkfs -t ext4 -m 1-b 4096 -E stride=128,stripe-width=768
> /dev/geo_vg0/geo_lvm0
--
Luca Berra -- bluca@comedia.it
next prev parent reply other threads:[~2010-11-16 22:17 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-16 18:08 mdadm raid6->LVM->ext4 setup Zoltan Szecsei
2010-11-16 18:16 ` Roman Mamedov
2010-11-16 18:23 ` Zoltan Szecsei
2010-11-16 22:17 ` Luca Berra [this message]
2010-11-16 23:39 ` Michal Soltys
2010-11-17 7:49 ` Zoltan Szecsei
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