[Lustre-discuss] How to find a file by object id

[Wojciech Turek]

Many Thanks Daniel, these hints are very helpful.

Wojciech

2009/10/21 Daniel Kobras <kobras at linux.de>

> Hi!
>
> On Wed, Oct 21, 2009 at 11:58:43AM +0100, Wojciech Turek wrote:
> > I apologize if this question was answered earlier but I can not find it
> in
> > the mailing list.
> > I have an object ID and I would like to find file that this object is
> part
> > of. I tried to use lfs find but I can not seem to find right combination
> of
> > options.
>
> On a Lustre client, I'm not aware of any better method than using a
> combination
> of lfs find and lfs getstripe to look for matching object IDs.  On the
> servers,
> Andreas Dilger has described a more efficient way using debugfs in
> http://lists.lustre.org/pipermail/lustre-discuss/2009-July/011080.html
>
> > Also is there a simple way to list all the files and their object IDs?
>
> I'm not sure whether it counts as "simple", but this is what I'm using:
>
> lfs find . -type f -print0 | while IFS='' read -d '' i; do echo "$i"; lfs
> getstripe -q "$i"; done
>
> Regards,
>
> Daniel.
>
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>



-- 
--
Wojciech Turek

Assistant System Manager

High Performance Computing Service
University of Cambridge
Email: wjt27 at cam.ac.uk
Tel: (+)44 1223 763517
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