From mboxrd@z Thu Jan  1 00:00:00 1970
From: NeilBrown <neilb@suse.de>
Subject: Re: Hi! Strange issue with LSR -- bitmaps hadn't been used during 2
 of 3 RAIDs resync
Date: Sun, 27 May 2012 22:00:07 +1000
Message-ID: <20120527220007.64fb230b@notabene.brown>
References: <CA+sTkh74rDvV05pjhVAD5wa4fxXsZE5MLN4y4fMd=Js7_BoTDQ@mail.gmail.com>
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Sender: linux-raid-owner@vger.kernel.org
To: Igor M Podlesny <for.poige+lsr@gmail.com>
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On Sun, 27 May 2012 19:32:40 +0800 Igor M Podlesny <for.poige+lsr@gmail.com>
wrote:

>    A power outage has happened to system (which was in "suspend"
> state) with RAID-10, RAID-5 and RAID-6. Later on boot, RAID-10 was
> fast re-synced using bitmap, but both RAID-5 and RAID-6 were in
> auto-readonly mode with resync=3DDELAYED. When they flipped to
> Read-Write, LSR started re-syncing not using bitmaps seemingly. A bug?

Maybe.  But with so little detail it is hard to say.
What made you think the bitmaps weren't being used?
Did that arrays still have their bitmaps?
Where they degraded?
How many bits were set in the bitmaps (probably too late to check now)?

Is it reproducable ?  ... OK, I don't really expect you to try to reproduce
it, but if you could that would be awesome!

NeilBrown


>=20
>    Occurred once on Linux 3.2.12, x86_64.
>=20
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