From: Frank Wittig <fw@weisshuhn.de>
To: John Poirier <john.poirier@case.edu>
Cc: linux-raid@vger.kernel.org
Subject: Re: md Grow for Raid 5
Date: Tue, 08 Mar 2005 20:34:56 +0100 [thread overview]
Message-ID: <422DFE60.5020807@weisshuhn.de> (raw)
In-Reply-To: <676e074ffe5f52e6671aac5a2c14e984@case.edu>
It actually is available.
I've tested it and it worked fine for me. But taking a backup is highly
recommended.
The trick is not to use mdadm, since growing with mdadm is not possible
at the moment. Use raid-tools instead.
The program raidreconf comes along with raidtools. This prog takes two
raid-tab files as input which describe the array configuration before
and after reconfiguration. (See man raidreconf for further details)
I've testet growing an array of 3 disks to 4 disks. Having LVM2 grow its
volume group along with the raid was another (very tricky) thing...
Greetings,
Frank
John Poirier wrote:
> Greets,
> A lot of RAID 5 hardware controllers can grow a RAID 5 array (online
> capacity expansion). Will this be available in software RAID?
next prev parent reply other threads:[~2005-03-08 19:34 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-08 18:23 md Grow for Raid 5 John Poirier
2005-03-08 19:34 ` Frank Wittig [this message]
2005-03-08 21:43 ` Mike Hardy
2005-03-08 23:14 ` berk walker
2005-03-08 23:20 ` Mike Hardy
2005-03-08 23:55 ` Neil Brown
2005-03-10 12:10 ` David Greaves
2005-03-09 9:31 ` Frank Wittig
2005-03-08 22:57 ` berk walker
2005-03-08 23:15 ` Mike Tran
2005-03-08 23:35 ` berk walker
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