linux-ext4 - Re: [PATCH] e2freefrag utility

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Message-id: <20090727183636.GN4231@webber.adilger.int>
Date:	Mon, 27 Jul 2009 12:36:36 -0600
From:	Andreas Dilger <adilger@....com>
To:	Theodore Tso <tytso@....edu>
Cc:	Eric Sandeen <sandeen@...hat.com>, linux-ext4@...r.kernel.org
Subject: Re: [PATCH] e2freefrag utility

On Jul 24, 2009  20:18 -0400, Theodore Ts'o wrote:
> On Fri, Jul 24, 2009 at 05:14:25PM -0600, Andreas Dilger wrote:
> > Well, it was important for the hardware RAID setups, to see how many
> > stripe-aligned free chunks are available in the filesystem.  Since
> > mballoc will also try to allocate/align on "chunk" boundaries this
> > is useful to know.  If this chunksize depended on the superblock
> > s_raid_stripe_width then it would be more useful for the general public.
> 
> Yeah, I think what we should try to do is to display the chunk
> information if s_raid_stripe_width if it is set, and otherwise only
> print it if a chunk size is explicitly specified.  Sounds like a plan?

Yes, sounds reasonable.

Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.

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