linux-ext4 - Re: [PATCH] e2fsprogs: exit from preenhalt if IO errors were encountered

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Message-ID: <48EFD985.6090206@redhat.com>
Date:	Fri, 10 Oct 2008 17:39:01 -0500
From:	Eric Sandeen <sandeen@...hat.com>
To:	ext4 development <linux-ext4@...r.kernel.org>
Subject: Re: [PATCH] e2fsprogs: exit from preenhalt if IO errors were encountered

Eric Sandeen wrote:
> Resolves RH Bug 465679- e2fsck -p crashes with read-only DM device (e.g. logical volume)  
> 
> If a block device is unwritable, e2fsck -p gets into an infinite loop
> trying to preenhalt, close & flush the fs, which tries to flush the cache, 
> which gets a write error and calls preenhalt which tries to close & flush
> the fs ... ad infinitum.
> 
> Per Ted's suggestion just flag the ctx as "exiting" and short-circuit
> the infinite loop.
> 
> Tested by running e2fsck -p on a block device set read-only by BLKROSET.

Oh, thanks to Vlado Potisk for reporting this.

-Eric
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