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Date:	Thu, 11 Oct 2007 12:26:40 +0530
From:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
To:	Andreas Dilger <adilger@...sterfs.com>
CC:	linux-ext4 <linux-ext4@...r.kernel.org>,
	Avantika Mathur <mathur@...ux.vnet.ibm.com>
Subject: Re: uninit block group/mballoc and fsstress



Andreas Dilger wrote:
> On Oct 10, 2007  22:07 +0530, Aneesh Kumar K.V wrote:
>> I am hitting this with  the below config
>>
>> mke2fs -j -I 256 -O lazy_bg $dev
> 
> Note that "-O lazy_bg" has nothing really to do with the uninit_groups
> feature.  Also, if you don't have the CFS e2fsprogs patches for
> uninit_groups then mke2fs creates an invalid filesystem if the journal is
> large (this was an unrelated bug we fixed while testing uninit_groups).
> Try running e2fsck right after the above mke2fs and you will likely
> see errors.
> 

e2fsprogs found at  

ftp://ftp.clusterfs.com/pub/lustre/other/e2fsprogs

sets unint with -O lazy_bg. Is there any other option that i can use to set
the uninit block group feature ?


>> jbd2_journal_bmap: journal block not found at offset 31780 on sda7
> 
> The problem is that lazy_bg allocates the journal blocks incorrectly, IIRC.
> 
> Cheers, Andreas
> --
> Andreas Dilger
> Principal Software Engineer
> Cluster File Systems, Inc.
> 
> 
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