linux-ext4 - Re: [PATCH] ext* free space fragmentation reporting

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Message-id: <20080722070521.GA16621@webber.adilger.int>
Date:	Tue, 22 Jul 2008 01:05:21 -0600
From:	Andreas Dilger <adilger@....com>
To:	Theodore Tso <tytso@....EDU>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: [PATCH] ext* free space fragmentation reporting

On Jul 21, 2008  22:59 -0400, Theodore Ts'o wrote:
> On Mon, Jul 21, 2008 at 03:13:34PM -0600, Andreas Dilger wrote:
> > We wrote a tool for Lustre which reports the free space fragmentation in
> > ext* filesystems.  There was a request on linuxfs to get a copy of this
> > patch, and I thought it would be potentially useful for others as well.
> > The patch is against 1.40.11, but I don't think it would need to change
> > much (if any) for 1.40.1 because it only uses public libext2fs interfaces.
> 
> Thanks, I'll look at this.  Speaking of which, a week or two ago I was
> going through the clusterfs patches to see if there was anything I had
> missed for 1.41.0 that should either go into 1.42 or 1.41.1, and I
> noticed there were a number of extra tools, of which freefrag was but
> one.
> 
> Can I assume a signed-off by "Andreas Dilger <adilger@....com>" for
> any of the Clusterfs/Sun e2fsprogs patches in the public patches
> directory?

Yes.

> Are there any other user programs in particular that should be included?

The other one that we've worked on is e2scan - it implements a fast
scan of the inode table to find modified files for backup/rsync/etc.

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

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