Hi Alec ,
mmfind doesn’t have a man page (does it have an online one ? I cannot find it). 
And according to mmfind -h it doesn’t exposes the “-N” neither  the “-B” flags. 
RPM is gpfs.base-5.1.1-2.x86_64.

Do I have chance to download a newest version of that script from somewhere ?

Thanks,

   Alvise

Da: gpfsug-discuss-boun...@spectrumscale.org 
<gpfsug-discuss-boun...@spectrumscale.org> Per conto di Dorigo Alvise (PSI)
Inviato: lunedì 13 dicembre 2021 11:50
A: gpfsug main discussion list <gpfsug-discuss@spectrumscale.org>
Oggetto: [gpfsug-discuss] R: Question on changing mode on many files

I am definitely going to try this solution with mmfind.
Thank you also for the command line and several hints… I’ll be back with the 
outcome soon.

   Alvise

Da: 
gpfsug-discuss-boun...@spectrumscale.org<mailto:gpfsug-discuss-boun...@spectrumscale.org>
 
<gpfsug-discuss-boun...@spectrumscale.org<mailto:gpfsug-discuss-boun...@spectrumscale.org>>
 Per conto di Alec
Inviato: domenica 12 dicembre 2021 23:04
A: gpfsug main discussion list 
<gpfsug-discuss@spectrumscale.org<mailto:gpfsug-discuss@spectrumscale.org>>
Oggetto: Re: [gpfsug-discuss] Question on changing mode on many files

How am I just learning about this right now, thank you!  Makes so much more 
sense now the odd behaviors I've seen over the years on GPFS vs POSIX 
chmod/ACL.  Will definitely go review those settings on my filesets now, wonder 
if the default has evolved from 3.x -> 4.x -> 5.x.

IBM needs to find a way to pre-compile mmfind and make it supported, it really 
is essential and so beneficial, and so hard to get done in a production 
regulated environment.  Though a bigger warning that the compress option is an 
action not a criteria!

Alec

On Sun, Dec 12, 2021 at 9:01 AM Simon Thompson 
<s.j.thomp...@bham.ac.uk<mailto:s.j.thomp...@bham.ac.uk>> wrote:
> I'm not sure if this happens on Spectrum Scale but on most FS's if you do a 
> chmod 770 file you'll lose any ACLs assigned to the
> file, so safest to bump the permissions with a subtractive or additive o-w or 
> g+w type operation.

This depends entirely on the fileset setting, see:
https://www.ibm.com/docs/en/spectrum-scale/5.1.2?topic=reference-mmchfileset-command

“allow-permission-change”

We typically have file-sets set to chmodAndUpdateAcl, though not exclusively, I 
think it was some quirky software that tested the permissions after doing 
something and didn’t like the updatewithAcl thing …

Simon
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