Hello Andreas, sorry for the late reply. As you suggested it was a matter
of sync_permissions. After disabling sync_permission recursive chmod and
chown operations are taking "normal" time to complete. Thank you very
much
for the info. On a separate but somehow close issue, can you suggest any
tuning on speeding up "stat" and "listdir" operations. We
are using a
python script, which go es thru a folder structure with a lot of files and
dirs. It uses "os.listdir", which is essentially posix ls. I`ve read
in the
manual about directory statahead and agl. I`ll try later today or tomorrow
playing with the window size. Also a simple "time lfs ls" shows faster
execution time than "time ls", so I`ll probably have to talk with the
dev
guy about implementing "lfs ls" instead the posix ls.
Cheers,
Nikolay
On Tue, Aug 20, 2013 at 6:12 PM, Dilger, Andreas
<andreas.dilger-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>wrote:
> You didn''t mention which version of Lustre you are using, but
this is
> probably related to https://jira.hpdd.intel.com/browse/LU-3671
>
> Cheers, Andreas
>
> On 2013-08-20, at 1:08, "Nikolay Kvetsinski"
<nkvecinski-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>
> Hello guys,
>
> does anyone of you have problems with chown and chmod operations taking
> extremely long time to complete. For example chown on 200 MB folder is
> taking minutes. The MDS is not loaded at all. All other operations (file
> read and write) seem to be doing fine.
>
> Any help is greatly appreciated.
>
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>
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