From: "Marcin M. Jessa" <lists@yazzy.org>
To: David Brown <david@westcontrol.com>
Cc: linux-raid@vger.kernel.org
Subject: Re: Creating an md with 3TB drives.
Date: Wed, 28 Sep 2011 17:09:00 +0200 [thread overview]
Message-ID: <4E83388C.9010308@yazzy.org> (raw)
In-Reply-To: <j5umop$6sr$1@dough.gmane.org>
On 9/28/11 10:43 AM, David Brown wrote:
> On 28/09/2011 10:31, Marcin M. Jessa wrote:
>> On 9/28/11 10:23 AM, NeilBrown wrote:
>> [...]
>>
>>>>
>>>> Then I used fdisk to change the partition type to Linux raid auto
>>>
>>> You can do that if you like but it will have no effect. The "raid auto"
>>> partition type only means anything on MBR partitions. You don't need
>>> to, so
>>> don't bother.
>>
>> Thanks Neil.
>> Not using fdisk worked like a charm.
>>
>
> Using fdisk probably resulted in the disks going over to MBR rather than
> GPT, and thus you have a 2TB limit.
>
> By the way, you should probably try the parted again and fix the
> alignment issue (rather than just "ignoring" it) - it will make a /big/
> difference.
In terms of speed?
This RAID array is temporarily just so I can back up/restore my broken
5x2TB RAID6 but it would be interesting to know what to do.
I was running
# parted -a optimal /dev/sdd
which was suppose to fix that warning but it didn't.
--
Marcin M. Jessa
next prev parent reply other threads:[~2011-09-28 15:09 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-28 8:05 Creating an md with 3TB drives Marcin M. Jessa
2011-09-28 8:23 ` NeilBrown
2011-09-28 8:31 ` Marcin M. Jessa
2011-09-28 8:43 ` David Brown
2011-09-28 15:09 ` Marcin M. Jessa [this message]
2011-09-29 9:09 ` David Brown
2011-09-29 9:23 ` Marcin M. Jessa
2011-09-29 11:18 ` David Brown
2011-10-05 22:25 ` Sebastian Muniz
2011-10-05 23:20 ` Jérôme Poulin
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