Ticket 7888 - unable to get pids of '(null)'
Summary: unable to get pids of '(null)'
Status: RESOLVED FIXED
Alias: None
Product: Slurm
Classification: Unclassified
Component: slurmstepd (show other tickets)
Version: 19.05.2
Hardware: Linux Linux
: --- 4 - Minor Issue
Assignee: Felip Moll
QA Contact:
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Depends on:
Blocks:
 
Reported: 2019-10-07 12:53 MDT by Nate Rini
Modified: 2021-07-13 05:32 MDT (History)
2 users (show)

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Version Fixed: 21.08.0
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Description Nate Rini 2019-10-07 12:53:41 MDT 
Splitting off this issue to new ticket from bug#7872 comment#21

Oct 07 17:33:44 h9c53 slurmstepd[22157]: debug2: _file_read_uint32s: unable to open '(null)/tasks' for reading : No such file or directory
Oct 07 17:33:44 h9c53 slurmstepd[22157]: debug2: xcgroup_get_pids: unable to get pids of '(null)'
Oct 07 17:33:44 h9c53 slurmstepd[22157]: debug2: _file_read_uint32s: unable to open '(null)/tasks' for reading : No such file or directory
Oct 07 17:33:44 h9c53 slurmstepd[22157]: debug2: xcgroup_get_pids: unable to get pids of '(null)'
Comment 10 Nate Rini 2020-06-05 10:39:49 MDT 
Customer has same issue in Bug#9133 comment#59:

> _file_read_uint32s: unable to open '(null)/tasks' for reading : No such file or directory⏎
> xcgroup_get_pids: unable to get pids of '(null)'⏎
> _file_read_uint32s: unable to open '(null)/tasks' for reading : No such file or directory⏎
> xcgroup_get_pids: unable to get pids of '(null)'⏎
> task affinity plugin unloaded⏎
> _file_read_uint32s: unable to open '(null)/tasks' for reading : No such file or directory⏎
> xcgroup_get_pids: unable to get pids of '(null)'⏎
Comment 14 Felip Moll 2021-07-13 05:32:48 MDT 
This issue is fixed in internal bug 9254 and the refactor of cgroup code that is now on master branch and will be in the next 21.08 release.

Thanks!