linux-ext4 - Re: [PATCH 08/37] mke2fs: set gdt csum when creating packed fs

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Date:	Fri, 2 May 2014 13:55:59 +0200 (CEST)
From:	Lukáš Czerner <lczerner@...hat.com>
To:	"Darrick J. Wong" <darrick.wong@...cle.com>
cc:	tytso@....edu, linux-ext4@...r.kernel.org
Subject: Re: [PATCH 08/37] mke2fs: set gdt csum when creating packed fs

On Thu, 1 May 2014, Darrick J. Wong wrote:

> Date: Thu, 01 May 2014 16:13:15 -0700
> From: Darrick J. Wong <darrick.wong@...cle.com>
> To: tytso@....edu, darrick.wong@...cle.com
> Cc: linux-ext4@...r.kernel.org
> Subject: [PATCH 08/37] mke2fs: set gdt csum when creating packed fs
> 
> When we're creating a fs with metadata blocks packed at the beginning
> (packed_meta_blocks=1 in mke2fs.conf), set the group descriptor
> checksum or else we create DOA filesystems with checksum errors.

Makes sense. Thanks!

Reviewed-by: Lukas Czerner <lczerner@...hat.com>

> 
> Signed-off-by: Darrick J. Wong <darrick.wong@...cle.com>
> ---
>  misc/mke2fs.c |    1 +
>  1 file changed, 1 insertion(+)
> 
> 
> diff --git a/misc/mke2fs.c b/misc/mke2fs.c
> index 6507d0d..fd6259d 100644
> --- a/misc/mke2fs.c
> +++ b/misc/mke2fs.c
> @@ -383,6 +383,7 @@ static errcode_t packed_allocate_tables(ext2_filsys fs)
>  		ext2fs_block_alloc_stats_range(fs, goal,
>  					       fs->inode_blocks_per_group, +1);
>  		ext2fs_inode_table_loc_set(fs, i, goal);
> +		ext2fs_group_desc_csum_set(fs, i);
>  	}
>  	return 0;
>  }
> 
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