linux-ext4 - [PATCH] e2freefrag utility

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Message-id: <20090721001750.GD4231@webber.adilger.int>
Date:	Mon, 20 Jul 2009 18:17:50 -0600
From:	Andreas Dilger <adilger@....com>
To:	"Theodore Ts'o" <tytso@....edu>
Cc:	linux-ext4@...r.kernel.org
Subject: [PATCH] e2freefrag utility

Attached is the e2freefrag tool.  It grabs the block bitmaps, creates
buddy bitmaps from them and displays the total/free chunks (default
1MB chunk size), and a histogram of free space.

It could probably be enhanced to print the chunk sizes based on the
RAID chunk size stored in the superblock, but I just thought of that
this minute...

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

View attachment "e2fsprogs-e2freefrag.patch" of type "text/plain" (14338 bytes)