From: rabbit@rabbit.us (Peter Rabbitson)
To: linux-raid@vger.kernel.org
Subject: Re: RAID0 to RAID5 upgrade
Date: Thu, 1 Mar 2007 18:39:05 -0500 [thread overview]
Message-ID: <20070301233905.GA13126@rabbit.us> (raw)
In-Reply-To: <45E75DE0.6060900@tmr.com>
On Thu, Mar 01, 2007 at 06:12:32PM -0500, Bill Davidsen wrote:
> I have three drives, with some various partitions, currently set up like
> this.
>
> drive0 drive1 drive2
>
> hdb1 hdi1 hdk1
> \_________RAID1________/
>
> hdb2 hdi2 hdk2
> unused \___RAID0____/
> 200GB 100GB x 2
>
> hdi3 hdk3
> \___unused___/
> 100GB x 2
>
> What I want to have is 3 x 200 = 400GB RAID5.
>
> I would like to avoid copying 200GB of data to another machine and back
Can't you do the following:
* copy the data from raid0 to hdb2 ( raid0 <= hdb2 you can even do a dd)
* degrade raid1 to only contain drive0
* since you have all your data on drive0, wipe drive1 and drive2 clean,
create a degraded raid5
* copy stuff from drive0 to the new array (enw fs as well I presume)
* resync the raid5 with drive0
next prev parent reply other threads:[~2007-03-01 23:39 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-01 23:12 RAID0 to RAID5 upgrade Bill Davidsen
2007-03-01 23:39 ` Peter Rabbitson [this message]
2007-03-02 20:31 ` Bill Davidsen
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