linux-ext4 - SOLVED: Re: files mapped funny? (related to online defragmentation)

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Date:	Mon, 21 May 2007 19:08:05 -0700
From:	Eric <erpo41@...il.com>
To:	linux-ext4 <linux-ext4@...r.kernel.org>
Subject: SOLVED: Re: files mapped funny? (related to online defragmentation)

> > I'm getting strange results when I map out the blocks used in files
> > larger than a several thousand KB. I never seem to get any more than
> > 1024 contiguous data blocks in a row. 
> > 
> filefrag command comes with e2fsprogs will print the file fragmentation
> info. I guess you can try filefrag -v command and see if that matches
> what your scripts reported.

Thanks for the pointer. It seems my program only counts data blocks, so
it sees the indirect block for each 1024 data blocks as a space between
extents. I will have to read the filefrag source and account for that.

Cheers,

Eric

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