From: Jens Hoffrichter <joho@hausboot.org>
To: linux-lvm@sistina.com
Subject: Re: [linux-lvm] Best practice for lvm on raid-5
Date: Mon Feb 2 13:30:02 2004 [thread overview]
Message-ID: <20040202182846.GO5191@deepthought.hausboot.org> (raw)
In-Reply-To: <20040202162025.GA27150@muon.de>
On Mon, Feb 02, 2004 at 05:20:25PM +0100, Nils Juergens wrote:
> > Currently I have /dev/md0 as my only physical volume, but this will lead
> > to problems if I am going to expand the raid 5 by adding another 80 GB
> > harddrive to (as pvresize is not implemented again yet, as I understand).
>
> Unless I am mistaken, it is not even possible to expand /dev/md0 by adding
> another drive in the first place. And because linux software raid has
> no way of knowing which blocks are in use and which are not, i do not see
> how this could ever be possible.
Yes, it should be possible using raidreconf. I have not testet it yet, but
at least the manpage states it. Converting a raid 0 to a raid 5 of same size
worked without problem.
> If you add another array (raid1 or raid5) as /dev/md1, you can vgextend your
> VG.
Yes, I'm aware of this, but for this I have to add another 3 disk to the
system, and I want to avoid this.
CU all,
Jens
--
GPG: 1024D/CF884D50 F2E8 F7FC F823 6464 4E9D EFAB 6EE9 8B9C CF88 4D50
------------------------------------------------------------------------
Jens Hoffrichter / joho@hausboot.org / Joho@IRC / Fon: +43-650-5376989
A dream is a wish your heart makes.
(Seen on a parade in Walt Disney World)
next prev parent reply other threads:[~2004-02-02 13:30 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-02 10:36 [linux-lvm] Best practice for lvm on raid-5 Jens Hoffrichter
2004-02-02 11:22 ` Nils Juergens
2004-02-02 13:30 ` Jens Hoffrichter [this message]
2004-02-02 14:37 ` Chris Cox
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