Quoting Svenja Otten (ot...@global-village.de):
> Package: cgmanager
> Version: 0.33-2+deb8u2
>
> Hi,
>
> the "cgm gettasks" command does not always work as expected.
> I set up a memory limit of 64MB for the user with uid 1000:
>
> root@debian-test:~# cat /etc/systemd/system/user-1000.slice.d/MemoryLimit.conf
> [Slice]
> MemoryLimit=67108864
>
> It is set up at reboot, as I can see (with the user logged in):
>
> root@debian-test:~# cgget -g memory:/user.slice/user-1000.slice
> /user.slice/user-1000.slice:
> memory.pressure_level:
> memory.use_hierarchy: 1
> memory.swappiness: 60
> memory.memsw.failcnt: 0
> memory.limit_in_bytes: 67108864
> memory.memsw.max_usage_in_bytes: 3182592
> memory.usage_in_bytes: 2670592
> memory.memsw.limit_in_bytes: 18446744073709551615
> memory.failcnt: 0
> memory.force_empty:
> memory.memsw.usage_in_bytes: 2670592
> memory.max_usage_in_bytes: 3182592
> memory.numa_stat: total=652 N0=652
> file=0 N0=0
> anon=652 N0=652
> unevictable=0 N0=0
> hierarchical_total=652 N0=652
> hierarchical_file=0 N0=0
> hierarchical_anon=652 N0=652
> hierarchical_unevictable=0 N0=0
> memory.oom_control: oom_kill_disable 0
> under_oom 0
> memory.stat: cache 0
> rss 2670592
> rss_huge 0
> mapped_file 0
> writeback 0
> swap 0
> pgpgin 1285
> pgpgout 633
> pgfault 2744
> pgmajfault 0
> inactive_anon 0
> active_anon 2670592
> inactive_file 0
> active_file 0
> unevictable 0
> hierarchical_memory_limit 67108864
> hierarchical_memsw_limit 18446744073709551615
> total_cache 0
> total_rss 2670592
> total_rss_huge 0
> total_mapped_file 0
> total_writeback 0
> total_swap 0
> total_pgpgin 1285
> total_pgpgout 633
> total_pgfault 2744
> total_pgmajfault 0
> total_inactive_anon 0
> total_active_anon 2670592
> total_inactive_file 0
> total_active_file 0
> total_unevictable 0
> memory.move_charge_at_immigrate: 0
> memory.soft_limit_in_bytes: 18446744073709551615
>
>
> I can also see the user's tasks:
>
> root@debian-test:~# cgm gettasks memory user.slice/user-1000.slice
> 2732
> 2734
> 2735
> 2737
> 2738
>
> But if I then log out with the root user and re-log in, the command fails
> with:
>
> root@debian-test:~# cgm gettasks memory user.slice/user-1000.slice
> call to cgmanager_get_tasks_sync failed: invalid request
>
> Can you please check why the command fails after re-log in?
My guess would be that your new login is in a different cgroup from the
old. The path 'user.slice/user-1000.slice' is relative to your current
path. What does
cgm getpidcgroupabs memory $$
show before and after logging back in?
