linux-kernel - Re: [Bug 14354] Re: ext4 increased intolerance to unclean shutdown?

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Message-ID: <4AEA0B71.5050805@redhat.com>
Date:	Thu, 29 Oct 2009 16:38:57 -0500
From:	Eric Sandeen <sandeen@...hat.com>
To:	Parag Warudkar <parag.lkml@...il.com>
CC:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
	Theodore Tso <tytso@....edu>,
	LKML <linux-kernel@...r.kernel.org>, linux-ext4@...r.kernel.org,
	bugzilla-daemon@...zilla.kernel.org
Subject: Re: [Bug 14354] Re: ext4 increased intolerance to unclean shutdown?

Parag Warudkar wrote:
> On Tue, Oct 27, 2009 at 6:15 AM, Aneesh Kumar K.V
> <aneesh.kumar@...ux.vnet.ibm.com> wrote:
>> Can you try this patch ?
>>
>> commit a8836b1d6f92273e001012c7705ae8f4c3d5fb65
>> Author: Aneesh Kumar K.V <aneesh.kumar@...ux.vnet.ibm.com>
>> Date:   Tue Oct 27 15:36:38 2009 +0530
>>
>>    ext4: discard preallocation during truncate
>>
>>    We need to make sure when we drop and reacquire the inode's
>>    i_data_sem we discard the inode preallocation. Otherwise we
>>    could have blocks marked as free in bitmap but still belonging
>>    to prealloc space.
> 
> Just wanted to let you know that I have applied this patch and one
> unclean shutdown later it seems to have not given me any trouble.
> 
> I will continue testing it - hopefully I won't have to reformat  this
> time ( every time I tested previously I ended up having weird issues
> that I decided to get rid of by reformatting /).

I've been running my testcase, and I just hit the usual corruption with 
this patch in place after 8 iterations, I'm afraid.

-Eric

> Parag
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