[gpfsug-discuss] Unix mode bits and mmapplypolicy

aquan aquan at o2.pl
Fri Aug 28 16:12:23 BST 2015


Hello,
This is my first time here. I'm a computer science student from Poland
and I use GPFS during my internship at DESY. GPFS is a completely new
experience to me, I don't know much about file systems and especially those
used on clusters.
I would like to ask about the unix mode bits and mmapplypolicy.
What I noticed is that when I do the following:
1. Recursively call chmod on some directory (i.e. chmod -R 0777 some_directory)
2. Call mmapplypolicy to list mode (permissions),
the listed modes of files don't correspond exactly to the modes that I set with chmod.
However, if I wait a bit between step 1 and 2, the listed modes are correct.
It seems that the mode bits are updated somewhat asynchronically and if I run
mmapplypolicy too soon, they will contain old values.
I would like to ask if it is possible to make sure that before calling mmputacl,
the mode bits of that directory will be up to date on the list generated by a policy?
- Omer Sakarya
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