From: Mads Peter Bach <mpb@hum.auc.dk>
To: Anders Fugmann <afu@fugmann.dhs.org>
Cc: linux-raid@vger.kernel.org
Subject: Re: Upgrading Raid1 array to have 2. disks.
Date: Wed, 07 May 2003 01:46:16 +0200 [thread overview]
Message-ID: <3EB84948.2090401@hum.auc.dk> (raw)
In-Reply-To: <3EB8441F.8070606@fugmann.dhs.org>
Anders Fugmann wrote:
> Sorry if this is the wrong list to post this on.
It's the right list.
> I have made an error when creating a new raid1 array as I specified that
> the raid should consist of only one disk. Now, I would like to add
> another disk, but mdadm insists on adding it as a spare disk, offering
> no data redundancy.
> I have read the manpages, and tried googling without success.
> I do not wish to destroy the data on the discs, and recreate the array
> but It might be a last resort. Can anyone help me convince mdadm to add
> the 2. partition as an active disk.
You could keep your data by doing this:
Remove the current spare:
mdadm --remove /dev/md/0 /dev/ide/host0/bus0/target0/lun0/part1[0]
Create new array with
mdadm --create /dev/md/1 --level=1
--raid-devices=/dev/ide/host0/bus0/target0/lun0/part1[0] missing
Then create fs on new array, mount & copy data to the new array. Stop the old
array, add disk from old array to the new array.
--
Mads Peter Bach
Systemadministrator, Det Humanistiske Fakultet, Aalborg Universitet
Kroghstræde 3 - 5.111, DK-9220 Aalborg Øst - (+45) 96358062
# whois MPB1-DK@whois.dk-hostmaster.dk
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next prev parent reply other threads:[~2003-05-06 23:46 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-06 23:24 Upgrading Raid1 array to have 2. disks Anders Fugmann
2003-05-06 23:46 ` Mads Peter Bach [this message]
2003-05-07 0:00 ` Neil Brown
2003-05-08 19:11 ` Anders Fugmann
2003-05-20 0:33 ` raid5, 2 drives dead at same time,kernel will Oops? 3tcdgwg3
2003-05-21 2:42 ` Neil Brown
2003-05-22 1:04 ` 3tcdgwg3
2003-05-30 20:33 ` 3tcdgwg3
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