Re: User space tool to extract ext3 inode information

[Aravindan Raghuveer <aravindan_raghu yahoo com>]

Hi Andreas,

Thanks a bunch for your quick response! I checked the
command and the output is terms of filesytem block
numbers [mine seems to have a 4K block size]. I can
convert this into LBAs in my perl script.

Thanks again.

Regards,

-Aravind.


--- Andreas Dilger <adilger clusterfs com> wrote:

> On Apr 16, 2007  11:17 -0700, Aravindan Raghuveer
> wrote:
> > I need to write a user space tool that can dump
> > logical block addresses used by every file in a
> ext3
> > file system. For example, if file foo uses LBAs
> 2,3
> > and file bar uses LBAs 100,102,156, then the
> ouptut
> > should read:
> > 
> > FILENAME    LBAs 
> > foo         2, 3
> > bar         100,102,156
> > 
> > Is there a tool that exists that can do this? If
> not,
> > what would be a good strategy to write this tool.
> I am
> > learning filesystem programming and would really
> > appreciate any pointers.
> 
> "debugfs -c -R 'stat /path/to/file' /dev/XXX"
> reports, among other things
> the blocks used by that file.
> 
> Cheers, Andreas
> --
> Andreas Dilger
> Principal Software Engineer
> Cluster File Systems, Inc.
> 
> 


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