From: "Majed B." <majedb@gmail.com>
To: John Robinson <john.robinson@anonymous.org.uk>
Cc: linux-raid <linux-raid@vger.kernel.org>
Subject: Re: Reshaping the length of devices
Date: Fri, 12 Mar 2010 20:08:59 +0300 [thread overview]
Message-ID: <70ed7c3e1003120908h21c40695pc562ca660420a451@mail.gmail.com> (raw)
In-Reply-To: <4B9A71D1.108@anonymous.org.uk>
John, don't hijack the thread.
Post your question in a separate email.
On Fri, Mar 12, 2010 at 7:54 PM, John Robinson
<john.robinson@anonymous.org.uk> wrote:
> On 12/03/2010 15:18, Jon Hardcastle wrote:
>>
>>
>> --- On Fri, 12/3/10, Asdo <asdo@shiftmail.org> wrote:
>>
>>> From: Asdo <asdo@shiftmail.org>
>>> Subject: Reshaping the length of devices
>>> To: "linux-raid" <linux-raid@vger.kernel.org>
>>> Date: Friday, 12 March, 2010, 15:15
>>> I am wondering... is it possible to
>>> reshape the length of the underlying devices with MD raid?
>>>
>>> I mean like in the case one buys larger disks: after moving
>>> the raid partitions to the new disks half of them is still
>>> free. So one might want to extend the raid partitions to the
>>> end of the disks instead of creating another array in the
>>> free space.
>>>
>>> I have searched the linux-raid mailing list history but I
>>> couldn't find this topic.
>>>
>>> Thanks in advance
>>
>> As long as the size of ALL underlying devices have increased you can
>> --grow=MAX to the a multiple of the now smallest drive.
>
> Hmm, that reminds me I was meaning to ask - before I have to go to a
> customer's premises and try it - if I have a CentOS 5 system with 0.90
> metadata and type fd partitions with RAID-5 over 3 discs, and I want to grow
> it by replacing the drives, if I dd small partitions onto larger ones and
> reboot, will the system recognise the RAID-5 - which now has its metadata
> somewhere in the middle of the paritions not at the end - so that I can then
> --grow?
>
> Cheers,
>
> John.
> --
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--
Majed B.
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next prev parent reply other threads:[~2010-03-12 17:08 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-12 15:15 Reshaping the length of devices Asdo
2010-03-12 15:18 ` Jon Hardcastle
2010-03-12 16:54 ` John Robinson
2010-03-12 17:08 ` Majed B. [this message]
2010-03-12 17:37 ` John Robinson
2010-03-12 15:20 ` Majed B.
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