From: Pieter De Wit <pieter@insync.za.net>
To: Krzysztof Adamski <k-list@adamski.org>, linux-raid@vger.kernel.org
Subject: Re: Looking for help how to migrate 2disk RAID1 to 3 disk RAID6
Date: Wed, 01 Jan 2014 14:02:00 +1300 [thread overview]
Message-ID: <52C36908.2010701@insync.za.net> (raw)
In-Reply-To: <1388537511.5058.22.camel@oxygen.netxsys.com>
On 1/01/2014 13:51, Krzysztof Adamski wrote:
> I have a system with two drives like this:
> / RAID1 on sda3 and sdb3
> /boot RAID1 on sda1 and sdb1
>
> I would like to migrate to
> / RAID6 on sdi3, sdj3 and sdh3
> /boot RAID1 on sdi1, sdj1 and sdh1
>
> The /boot already done.
> How would I do the migration to RAID6?
>
> The new drives i,j and h are larger then a and b, after the migration I
> will reshape the raid to use all the space on the new raid, unless it is
> possible to do it in one step.
>
> The reason I want RAID6 and not RAID1 with 3 drives is that later I may
> add more drives to the array.
>
> Currently I don't trust any RAID that has only one parity drive, it has
> to survive a failure of any two drives. So RAID6 or triple RAID1 are a
> minimum.
>
> Thanks in advance,
> K
>
> --
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Hi,
RAID Level 6 requires a minimum of 4 drives to implement
Cheers,
Pieter
next prev parent reply other threads:[~2014-01-01 1:02 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-01 0:51 Looking for help how to migrate 2disk RAID1 to 3 disk RAID6 Krzysztof Adamski
2014-01-01 1:02 ` Pieter De Wit [this message]
2014-01-01 4:54 ` Krzysztof Adamski
2014-01-01 7:15 ` Tomas M
2014-01-01 15:02 ` Krzysztof Adamski
2014-01-01 10:33 ` Pieter De Wit
2014-01-01 15:10 ` Krzysztof Adamski
2014-01-01 22:06 ` Pieter De Wit
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