linux-ext4 - Re: [e2fsprogs] Implement resync of declared blocks for software RAID

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Date:	Tue, 08 Dec 2009 21:26:35 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Jody McIntyre <scjody@....com>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: [e2fsprogs] Implement resync of declared blocks for software RAID

Jody McIntyre <scjody@....com> writes:

> This patch resyncs declared blocks on journal recovery.  This must be done
> as part of journal replay for filesystems with
> JFS_FEATURE_INCOMPAT_DECLARE_BLOCKS; we have previously guaranteed to MD
> that we will resync any blocks that may have been undergoing writes at
> the time of a system crash.
>
> The SET_RESYNC_ALL and CLEAR_RESYNC_ALL ioctls are used to instruct MD
> to resync all blocks being read and written.
>
> This patch is UNTESTED and is being sent only because I am no longer
> working on declared mode.

Is this the only e2fsprogs patch needed for this feature, apart
from the kernel patches you posted?

Too bad you're not working on it anymore, I definitely liked
the idea.

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
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