Dear Jonathan, This is what I had assumed was the case. Since the system ended up with an enforced reboot before we had time for further investigation I wasn't able to confirm this.
> I can be very confusing for end users, especially when what is holding onto > the file is some random zombie process on another node that died last month. Yes, that's very likely to have been the case. Regards Aaron Turner -----Original Message----- From: [email protected] <[email protected]> On Behalf Of Jonathan Buzzard Sent: 18 February 2020 10:50 To: [email protected] Subject: Re: [gpfsug-discuss] Odd behaviour with regards to reported free space On Tue, 2020-02-18 at 09:28 +0000, TURNER Aaron wrote: > Dear All, > > This has happened more than once with both 4.2.3 and 5.0. The > instances may not be related. > > In the first instance, usage was high (over 90%) and so users were > encouraged to delete files. One user deleted a considerable number of > files equal to around 10% of the total storage. Reported usage did not > fall. There were not obviously any waiters. Has anyone seen anything > similar? > I have seen similar behaviour a number of times. I my experience it is because a process somewhere has an open file handle on one or more files/directories. So you can delete the file and it goes from a directory listing; it's no long visible when you do ls. However the file has not actually gone, and will continue to count towards total file system usage, user/group/fileset quota's etc. Once the errant process is found and killed magically the space becomes free. I can be very confusing for end users, especially when what is holding onto the file is some random zombie process on another node that died last month. JAB. -- Jonathan A. Buzzard Tel: +44141-5483420 HPC System Administrator, ARCHIE-WeSt. University of Strathclyde, John Anderson Building, Glasgow. G4 0NG _______________________________________________ gpfsug-discuss mailing list gpfsug-discuss at spectrumscale.org http://gpfsug.org/mailman/listinfo/gpfsug-discuss The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336. _______________________________________________ gpfsug-discuss mailing list gpfsug-discuss at spectrumscale.org http://gpfsug.org/mailman/listinfo/gpfsug-discuss
