[slurm-users] Cleanup of job_container/tmpfs

[Jason Ellul]

Thanks so much Ole for the info and link,

Your documentation is extremely useful.

Prior to moving to 22.05 we had been using slurm-spank-private-tmpdir with an epilog to clean-up the folders on job completion, but we were hoping to move to the inbuilt functionality to ensure future compatibility and reduce complexity.

Will try 23.02 and if that does not resolve our issue consider moving back to slurm-spank-private-tmpdir or auto_tmpdir.

Thanks again,

Jason

Jason Ellul
Head - Research Computing Facility
Office of Cancer Research
Peter MacCallum Cancer Center


From: slurm-users <slurm-users-bounces at lists.schedmd.com> on behalf of Ole Holm Nielsen <Ole.H.Nielsen at fysik.dtu.dk>
Date: Wednesday, 1 March 2023 at 8:29 pm
To: slurm-users at lists.schedmd.com <slurm-users at lists.schedmd.com>
Subject: Re: [slurm-users] Cleanup of job_container/tmpfs
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Hi Jason,

IMHO, the job_container/tmpfs is not working well in Slurm 22.05, but
there may be some significant improvements included in 23.02 (announced
yesterday).  I've documented our experiences in the Wiki page
https://wiki.fysik.dtu.dk/Niflheim_system/Slurm_configuration/#temporary-job-directories
This page contains links to bug reports against the job_container/tmpfs
plugin.

We're using the auto_tmpdir SPANK plugin with great success in Slurm 22.05.

Best regards,
Ole


On 01-03-2023 03:27, Jason Ellul wrote:
> We have recently moved to slurm 22.05.8 and have configured
> job_container/tmpfs to allow private tmp folders.
>
> job_container.conf contains:
>
> AutoBasePath=true
>
> BasePath=/slurm
>
> And in slurm.conf we have set
>
> JobContainerType=job_container/tmpfs
>
> I can see the folders being created and they are being used but when a
> job completes the root folder is not being cleaned up.
>
> Example of running job:
>
> [root at papr-res-compute204 ~]# ls -al /slurm/14292874
>
> total 32
>
> drwx------   3 root      root    34 Mar  1 13:16 .
>
> drwxr-xr-x 518 root      root 16384 Mar  1 13:16 ..
>
> drwx------   2 mzethoven root     6 Mar  1 13:16 .14292874
>
> -r--r--r--   1 root      root     0 Mar  1 13:16 .ns
>
> Example once job completes /slurm/<jobid> remains:
>
> [root at papr-res-compute204 ~]# ls -al /slurm/14292794
>
> total 32
>
> drwx------   2 root root     6 Mar  1 09:33 .
>
> drwxr-xr-x 518 root root 16384 Mar  1 13:16 ..
>
> Is this to be expected or should the folder /slurm/<jobid> also be removed?
>
> Do I need to create an epilog script to remove the directory that is left?


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