swapon on degraded raid is ok for 2.4.0
Package: sysvinit
Severity: wishlist
Version: 2.78-4
Summary checkroot.sh can now turn on swap on resyncing array as long as
kernel is >=2.4.0.
Greetings
Bernd
----- Forwarded message from Neil Brown <neilb@cse.unsw.edu.au> -----
Envelope-to: inka-user@lina.inka.de
From: Neil Brown <neilb@cse.unsw.edu.au>
To: Bernd Eckenfels <inka-user@lina.inka.de>
Date: Mon, 22 Jan 2001 17:37:10 +1100 (EST)
Cc: linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org
Subject: Re: [PATCH] - filesystem corruption on soft RAID5 in 2.4.0+
On Monday January 22, inka-user@lina.inka.de wrote:
> In article <14955.19182.663691.194031@notabene.cse.unsw.edu.au> you wrote:
> > There have been assorted reports of filesystem corruption on raid5 in
> > 2.4.0, and I have finally got a patch - see below.
> > I don't know if it addresses everybody's problems, but it fixed a very
> > really problem that is very reproducable.
>
> Do you know if it is safe with 2.4.0 kernels to swap on degraded soft raids?
> On the debian-devel list there is a discussion. Currently Debisn Systems to
> not do swap-on on boot if a raid partition is resyncing.
In 2.2 it was not safe to swap to a RAID array that we being resyched
or was having a spare reconstructed, but in 2.4 it is perfectly safe.
It would be entirely appropriate for the init.d script to check for
version >= 2.3.9pre8 (I think that is when the new resync code went
it) - or probably just >= 2.4.0, and bypass any fancy checks if that
is the case.
NeilBrown
>
> Greetings
> Bernd
> -
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----- End forwarded message -----
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