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.
On Tue, Aug 20, 2013 at 6:12 PM, Dilger, Andreas
You didn't mention which version of Lustre you are using, but
probably related to https://jira.hpdd.intel.com/browse/LU-3671
On 2013-08-20, at 1:08, "Nikolay Kvetsinski" <nkvecinski(a)gmail.com>
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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