Re: [gpfsug-discuss] R: Question on changing mode on many files

[Frederick Stock]

Yes

Fred
_______________________________________________________
Fred Stock | Spectrum Scale Development Advocacy | 720-430-8821
sto...@us.ibm.com

 

 

----- Original message -----
From: "Dorigo Alvise (PSI)" <alvise.dor...@psi.ch>
Sent by: gpfsug-discuss-boun...@spectrumscale.org
To: "gpfsug main discussion list" <gpfsug-discuss@spectrumscale.org>
Cc:
Subject: [EXTERNAL] [gpfsug-discuss] R: Question on changing mode on many files
Date: Tue, Dec 7, 2021 9:10 AM
 

I have 5.0.4 for the moment (planned to be updated next year) and what I see is:

 

[root@sf-dss-1 tmp]# locate mmfind

/usr/lpp/mmfs/samples/ilm/mmfind

/usr/lpp/mmfs/samples/ilm/mmfind.README

/usr/lpp/mmfs/samples/ilm/mmfindUtil_processOutputFile.c

/usr/lpp/mmfs/samples/ilm/mmfindUtil_processOutputFile.sampleMakefile

 

Is that what you are talking about ?

 

Thanks,

 

   Alvise

 

Da: gpfsug-discuss-boun...@spectrumscale.org <gpfsug-discuss-boun...@spectrumscale.org> Per conto di Frederick Stock
Inviato: martedì 7 dicembre 2021 15:02
A: gpfsug-discuss@spectrumscale.org
Cc: gpfsug-discuss@spectrumscale.org
Oggetto: Re: [gpfsug-discuss] Question on changing mode on many files

 

If you are running on a more recent version of Scale you might want to look at the mmfind command.  It provides a find-like wrapper around the execution of policy rules.

Fred
_______________________________________________________
Fred Stock | Spectrum Scale Development Advocacy | 720-430-8821
sto...@us.ibm.com

 

 

----- Original message -----
From: "Dorigo Alvise (PSI)" <alvise.dor...@psi.ch>
Sent by: gpfsug-discuss-boun...@spectrumscale.org
To: "'gpfsug main discussion list'" <gpfsug-discuss@spectrumscale.org>
Cc:
Subject: [EXTERNAL] [gpfsug-discuss] Question on changing mode on many files
Date: Tue, Dec 7, 2021 8:53 AM
 

Dear users/developers/support,

I’d like to ask if there is a fast way to manipulate the permission mask of many files (millions).

 

I tried on 900k files and a recursive chmod (chmod 0### -R path) takes about 1000s, with about 50% usage of mmfsd daemon.

I tried with the perl’s internal function chmod that can operate on an array of files, and it takes about 1/3 of the previous method. Which is already a good result.

 

I’ve seen the possibility to run a policy to execute commands, but I would avoid to execute external commands through mmxargs, 1M of times; would you ?

 

Does anybody have any suggestion to do this operation with minimum disruption on the system ?

 

Thank you,

 

    Alvise

_______________________________________________
gpfsug-discuss mailing list
gpfsug-discuss at spectrumscale.org
http://gpfsug.org/mailman/listinfo/gpfsug-discuss 

 

 

_______________________________________________
gpfsug-discuss mailing list
gpfsug-discuss at spectrumscale.org
http://gpfsug.org/mailman/listinfo/gpfsug-discuss 

 

_______________________________________________
gpfsug-discuss mailing list
gpfsug-discuss at spectrumscale.org
http://gpfsug.org/mailman/listinfo/gpfsug-discuss