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Date: Tue, 3 Mar 2009 11:02:02 +0800
From: Peng tao <bergwolf@...il.com>
To: Theodore Tso <tytso@....edu>
Cc: linux-ext4@...r.kernel.org
Subject: Re: [PATCH-e2fsprogs] Allow clearing flex_bg if only one group per
flex
On Mon, Mar 2, 2009 at 8:39 PM, Theodore Tso <tytso@....edu> wrote:
> On Mon, Mar 02, 2009 at 04:28:44PM +0800, Peng Tao wrote:
>> This can be caused by tune2fs -O flex_bg. And clearing flex_bg on such
>> partitions is harmless.
>
> It's actually not necessarily harmless; e2fsck could have already
> assigned new bitmap and inode tables outside of the block group. If
> you want to enable this, you need to actually check to make sure all
> of the block/inode bitmap blocks and inode tables are within their own
> block group before allowing flex_bg to be cleared.
>
> - Ted
>
Hi, Ted
Further looking into the code, I realized that tune2fs -O^flex_bg is
already supported if it doesn't break file system consistency. So
please ignore this patch.
I will send you a new patch for enabling tune2fs -I dealing with the
similar scenario.
Cheers,
Bergwolf
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