From: Francesco Talamona <ti.liame@email.it>
To: gentoo-user@lists.gentoo.org
Subject: [gentoo-user] Re: [OT] Moving system from "single-disk" to RAID-1 configuration
Date: Mon, 24 Oct 2005 20:28:44 +0200 [thread overview]
Message-ID: <200510242028.44718.ti.liame@email.it> (raw)
In-Reply-To: <200510231553.37011.Dan.Johansson@dmj.nu>
On Sunday 23 October 2005 15:53, Dan Johansson wrote:
> Hi,
>
> I have a setup Gentoo on a Box with a onboard ATA Raid controller
> (Promise PDC20265 FastTrak100 Lite/Ultra100). At the moment I am only
> using one ATA-Disk on this controller (this is the only disk in the
> system). Now I want to add a second Disk to this system and setup a
> RAID-1 configuration. Can someone point me to a good HOWTO or
> something similar which describes how to setup this
> (grub/lilo/dm/...) on a 2.6 kernel.
>
> Regards,
Many howtos mix raidtools and mdadm, this one [1] IMO is much clear.
At the moment I'm running a system with a RAID1 for /boot and another
RAID1 for root, and a LVM2 on top of a RAID5 for everything else. [3]
The most difficult thing was making disc naming sticky, I have a ASUS
A8V with a Via and a Promise controller, and the disk naming was so
sloppy that if sda failed all other disks were renamed to accommodate
in the free namespace, not at all reliable!
See [2].
In the end, after udev fine tuning, I managed to build a degraded array
of 4 disks using 3 discs (the RAID1 for /boot was built with 3 of 3
from the start) using instruction and suggestion in [1], no need
for /etc/raidtab!
A livecd that recognizes your hardware and has mdadm, lvm... is an
invaluable rescue tool, test it before all.
[1]http://www.linuxdevcenter.com/pub/a/linux/2002/12/05/RAID.html
[2]http://forum.hardware.fr/hardwarefr/OSAlternatifs/RAID-Soft-SATA-SCSI-Les-disques-changent-resolu-sujet-51807-1.htm
[3]http://www.gentoo.org/doc/en/lvm2.xml
ciao
Francesco
--
Linux Version 2.6.12-gentoo-r9, Compiled #2 Wed Aug 24 18:43:16 CEST
2005
One 2.2GHz AMD Athlon 64 Processor, 2GB RAM, 4325.37 Bogomips Total
aemaeth
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gentoo-user@gentoo.org mailing list
next prev parent reply other threads:[~2005-10-24 18:34 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-23 13:53 [gentoo-user] [OT] Moving system from "single-disk" to RAID-1 configuration Dan Johansson
2005-10-24 18:28 ` Francesco Talamona [this message]
2005-10-24 20:02 ` [gentoo-user] " Mike Williams
2005-10-25 5:01 ` Francesco Talamona
2005-10-25 10:27 ` Mike Williams
2005-10-25 17:02 ` Dan Johansson
2005-10-25 17:54 ` Mike Williams
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