linux-ext4 - Re: large file system & high object count testing

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Message-ID: <4A9C4CBE.7040701@redhat.com>
Date:	Mon, 31 Aug 2009 18:20:46 -0400
From:	Ric Wheeler <rwheeler@...hat.com>
To:	Justin Maggard <jmaggard10@...il.com>
CC:	Andreas Dilger <adilger@....com>, linux-ext4@...r.kernel.org,
	"Ted Ts'o" <tytso@...nk.org>
Subject: Re: large file system & high object count testing

On 08/31/2009 05:25 PM, Justin Maggard wrote:
> On Aug 31, 2009  13:02 -0400, Ric Wheeler wrote:
>    
>> Mount after fsck:
>> Aug 31 12:27:12 megadeth kernel: EXT4-fs (dm-75):
>> ext4_check_descriptors: Checksum for group 487 failed (59799!=46827)
>> Aug 31 12:27:12 megadeth kernel: EXT4-fs (dm-75): group descriptors
>> corrupted!
>>      
> Ah, so it's not just me.  It looks like you're seeing the exact same
> thing I reported a few days ago in the ">16TB issues" thread.  You
> don't even have to do anything fancy to make this happen.  My test
> case involves simply creating 5 directories on the newly-created
> 64-bit filesystem, and running e2fsck on it immediately after
> unmounting to get the same results.
>
> -Justin
>    
Much faster than my fill it over the week end test :-)

ric

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