[7530] in linux-scsi channel archive
Re: single logical volume from multiple disks?
daemon@ATHENA.MIT.EDU (Alan Cox)
Sat Nov 13 13:56:03 1999
To: otis@DOMINIS.com (Otis Gospodnetic)
Date: Sat, 13 Nov 1999 18:44:01 +0000 (GMT)
Cc: linux-scsi@vger.rutgers.edu
In-Reply-To: <000c01bf2e03$e4baa500$0201a8c0@dominis.com> from "Otis Gospodnetic" at Nov 13, 99 01:21:24 pm
Content-Type: text
Message-Id: <E11mi9b-0002yi-00@the-village.bc.nu>
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
> Is it possible to arrange multiple SCSI disks into a single logical volume
> like that is commonly done with RAID?
Yes. You use the RAID code for it.
> smaller (9/18 GB) disks, but I'd like to avoid the expense of a RAID
> controller/enclosure/etc. and am wondering if I can make multiple SCSI disks
> appear as one disk to the OS or if my only choice is RAID.
Linux does software raid
> Will LVM (http://linux.msede.com/lvm/) do the job with just plain (Fast)
> SCSI or is LVM for RAID only?
You can run Linux raid0 (or 1 or 5 or ..) as your underlying layer to
merge the disks into a volume then use LVM over the top of it. Also take a
look at the ext2 resizer.
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