linux-ext4 - Re: [PATCH] e2freefrag utility

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Message-ID: <20090725001823.GD6832@mit.edu>
Date:	Fri, 24 Jul 2009 20:18:23 -0400
From:	Theodore Tso <tytso@....edu>
To:	Andreas Dilger <adilger@....com>
Cc:	Eric Sandeen <sandeen@...hat.com>, linux-ext4@...r.kernel.org
Subject: Re: [PATCH] e2freefrag utility

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?

      	      	    	    	       - Ted
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