Issue found on D-kvm:
startup='Fri Nov 15 03:59:55 2019'
memcg_subgroup_charge 1 TINFO: Starting test 1
/opt/ltp/testcases/bin/memcg_subgroup_charge.sh: 522: echo: echo: I/O error
memcg_subgroup_charge 1 TINFO: set /dev/memcg/memory.use_hierarchy to 0 failed
memcg_subgroup_charge 1 TINFO: Running memcg_process --mmap-anon -s 135168
memcg_subgroup_charge 1 TINFO: Warming up pid: 712
memcg_subgroup_charge 1 TINFO: Process is still here after warm up: 712
memcg_subgroup_charge 1 TPASS: rss is 135168 as expected
memcg_subgroup_charge 2 TPASS: rss is 0 as expected
memcg_subgroup_charge 3 TINFO: Starting test 2
/opt/ltp/testcases/bin/memcg_subgroup_charge.sh: 522: echo: echo: I/O error
memcg_subgroup_charge 3 TINFO: set /dev/memcg/memory.use_hierarchy to 0 failed
memcg_subgroup_charge 3 TINFO: Running memcg_process --mmap-anon -s 135168
memcg_subgroup_charge 3 TINFO: Warming up pid: 738
memcg_subgroup_charge 3 TINFO: Process is still here after warm up: 738
memcg_subgroup_charge 3 TPASS: rss is 135168 as expected
memcg_subgroup_charge 4 TPASS: rss is 0 as expected
memcg_subgroup_charge 5 TINFO: Starting test 3
/opt/ltp/testcases/bin/memcg_subgroup_charge.sh: 522: echo: echo: I/O error
memcg_subgroup_charge 5 TINFO: set /dev/memcg/memory.use_hierarchy to 0 failed
memcg_subgroup_charge 5 TINFO: Running memcg_process --mmap-anon -s 135168
memcg_subgroup_charge 5 TINFO: Warming up pid: 761
memcg_subgroup_charge 5 TINFO: Process is still here after warm up: 761
memcg_subgroup_charge 5 TBROK: timeouted on memory.usage_in_bytes
tag=memcg_subgroup_charge stime=1573790395 dur=13 exit=exited stat=2 core=no
cu=33 cs=22
** Also affects: linux-kvm (Ubuntu)
Importance: Undecided
Status: New
** Tags added: sru-20191111
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https://bugs.launchpad.net/bugs/1847982
Title:
memcg_subgroup_charge from controllers in ubuntu_ltp failed on D-Azure
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