From: Brad Campbell <lists2009@fnarfbargle.com>
To: Peter Kovari <peter@kovari.priv.hu>
Cc: linux-raid@vger.kernel.org
Subject: Re: Question regarding --backup-file
Date: Mon, 02 May 2011 23:34:18 +0800 [thread overview]
Message-ID: <4DBECEFA.1050203@fnarfbargle.com> (raw)
In-Reply-To: <000301cc08db$89293160$9b7b9420$@priv.hu>
On 02/05/11 23:13, Peter Kovari wrote:
> Hi all,
>
> I understand, that a change from RAID5 to RAID6 by adding a single disk -
> eg. keeping the number of data disks - requires a backup file throughout the
> whole reshape process. For a larger, multi-TB array this means millions of
> writes to the backup file, which - if i'm correct - means means millions of
> writes to the same physical sectors of the disk that holds the backup file.
> Is this not problematic? How many write operations can a typical drive
> tolerate nowadays? (on the same sectors)
Lots, where Lots >= 1 and Lots < infinity.
I've never seen rotating media specify any form of limitation to writes.
Have you?
Brad
next prev parent reply other threads:[~2011-05-02 15:34 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-02 15:13 Question regarding --backup-file Peter Kovari
2011-05-02 15:34 ` Brad Campbell [this message]
2011-05-02 17:39 ` Peter Kovari
2011-05-02 19:05 ` David Brown
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