From: David Greaves <david@dgreaves.com>
To: Luke Reeves <luke@neuro-tech.net>
Cc: Guy <bugzilla@watkins-home.com>, linux-raid@vger.kernel.org
Subject: Re: Adding a new mirror disk to RAID1 configuration
Date: Fri, 09 Jul 2004 09:11:36 +0100 [thread overview]
Message-ID: <40EE5338.6080802@dgreaves.com> (raw)
In-Reply-To: <40EE2994.1090402@neuro-tech.net>
no, no no :)
Install the second disk (hdc)
build it as md1 RAID1 with a 'missing' disk this time
copy the data over from md0
get rid of md0
add the first disk as the missing disk
it will sync
don't do it again
David
Luke Reeves wrote:
> I've looked into raidreconf, but apparently it can only do operations
> on RAID levels 0 and 5.
>
> Luke
>
> Guy wrote:
>
>> My guess is you configured the RAID1 array as having 1 disk. Now if
>> you add
>> more disks to it, they are spares. You should have configured the
>> array as
>> having 2 disks, with 1 missing. Then when you add a disk, it will
>> re-build
>> to it.
>>
>> Read about raidreconf. Google it, if needed! It may allow you to
>> modify a
>> RAID1 array. I know it allows you to add a disk to a RAID5 array,
>> but don't
>> know about RAID1. I have never used this tool.
>>
>> Guy
>>
>> -----Original Message-----
>> From: linux-raid-owner@vger.kernel.org
>> [mailto:linux-raid-owner@vger.kernel.org] On Behalf Of Luke Reeves
>> Sent: Friday, July 09, 2004 12:55 AM
>> To: linux-raid@vger.kernel.org
>> Subject: Adding a new mirror disk to RAID1 configuration
>>
>> I have a system with two 40GB drives, and the first drive (hda) is
>> setup under an md device with RAID1 driving it. I'm trying to now
>> make the second disk, hdc, a mirror of the first. When I try to add
>> it using mdadm the second disk becomes a spare and no synchronization
>> is done. Is there any way to add the second disk directly as a
>> mirror? Thanks.
>>
>> Luke Reeves
>> http://www.neuro-tech.net/
>> -
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>
> -
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next prev parent reply other threads:[~2004-07-09 8:11 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-09 4:54 Adding a new mirror disk to RAID1 configuration Luke Reeves
2004-07-09 5:09 ` Guy
2004-07-09 5:13 ` Luke Reeves
2004-07-09 8:11 ` David Greaves [this message]
2004-07-09 8:23 ` Luke Reeves
2004-07-09 18:36 ` maarten van den Berg
2004-07-09 19:29 ` Guy
2004-07-09 20:09 ` Paul Clements
2004-07-09 21:04 ` maarten van den Berg
2004-07-10 0:03 ` Mark Hahn
2004-07-10 11:49 ` Maarten van den Berg
2004-07-09 5:13 ` Neil Brown
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