From: Mike Fedyk <mfedyk@matchmail.com>
To: Mark Cooke <mpc@star.sr.bham.ac.uk>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Raid5 resync slow with one linear array
Date: Thu, 4 Apr 2002 14:04:14 -0800 [thread overview]
Message-ID: <20020404220414.GB29089@matchmail.com> (raw)
In-Reply-To: <20020403005244.GE952@matchmail.com> <Pine.LNX.4.44.0204042255040.8182-100000@pc24.sr.bham.ac.uk>
On Thu, Apr 04, 2002 at 10:56:02PM +0100, Mark Cooke wrote:
>
> Hmm,
>
> Well you have me stumped then, Mike. I've only been playing with the
> raid stuff for a little while myself, and haven't had this trouble.
>
> Hope someone else on the list can help!
I think it is the linear array that is part of the raid5 array. RAID5
writing to the linear array (because one of the members of the RAID5 is
another linear pair of drives) probably is accounted as normal userspace IO,
and that causes the code to choose a slower transfer rate to sync.
Can someone confirm?
next prev parent reply other threads:[~2002-04-04 22:02 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-04-02 2:28 Raid5 resync slow with one linear array Mike Fedyk
[not found] ` <Pine.LNX.4.44.0204020630140.1152-100000@pc24.sr.bham.ac.uk>
2002-04-03 0:52 ` Mike Fedyk
[not found] ` <Pine.LNX.4.44.0204042255040.8182-100000@pc24.sr.bham.ac.uk>
2002-04-04 22:04 ` Mike Fedyk [this message]
2002-04-04 4:03 ` Neil Brown
2002-04-04 22:56 ` Mike Fedyk
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