debugfs question

Andreas Dilger adilger at
Wed Jul 2 07:28:53 UTC 2008

On Jun 28, 2008  23:50 +0300, Yamin, Yossi wrote:
> I am trying to read a file directly from the disk using debugfs utility.
> I am running "stat" on the file I want, filter out IND and Bind blocks,
> and then copy the data blocks using dd directly from the Disk.
> On small files it work'd (13MB).
> On big files (3.5 , 440 GB)  the size is the same but md5sum get differ.
> What am I doing wrong?

What you are doing wrong is that you aren't using the debugfs "dump"
command, which will do what you are trying to do.

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

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