[CRIU] Cgroup testing failed

[Pavel Emelyanov]

Hi, Tycho

After recent merge all ci.openvz.org jobs started to fail on cgroup02 like this

======================== Run zdtm/static/cgroup02 in h =========================
Start test
Test is SUID
./cgroup02 --pidfile=cgroup02.pid --outfile=cgroup02.out --dirname=cgroup02.test
Cleaning cgclean.fk807p (name=zdtmtst.defaultroot)
cgclean.fk807p/oldroot
cgclean.fk807p/newroot
Left there is:
cgroup.clone_children
cgroup.procs
cgroup.sane_behavior
holder
notify_on_release
release_agent
tasks
Cleaning cgclean.fk807p (name=zdtmtst)
cgclean.fk807p/oldroot
cgclean.fk807p/zdtmtstroot
Left there is:
cgroup.clone_children
cgroup.procs
cgroup.sane_behavior
holder
notify_on_release
release_agent
tasks
Cleaning cgclean.fk807p (hugetlb)
cgclean.fk807p/newroot
Left there is:
cgroup.clone_children
cgroup.procs
cgroup.sane_behavior
notify_on_release
release_agent
tasks
Cleaning cgclean.fk807p (perf_event)
cgclean.fk807p/newroot
Left there is:
cgroup.clone_children
cgroup.procs
cgroup.sane_behavior
notify_on_release
release_agent
tasks
Cleaning cgclean.fk807p (pids)
cgclean.fk807p/newroot
Left there is:
cgroup.clone_children
cgroup.procs
cgroup.sane_behavior
notify_on_release
release_agent
tasks
Cleaning cgclean.fk807p (blkio)
cgclean.fk807p/newroot
Left there is:
blkio.avg_queue_size
blkio.dequeue
blkio.empty_time
blkio.group_wait_time
blkio.idle_time
blkio.io_merged
blkio.io_merged_recursive
blkio.io_queued
blkio.io_queued_recursive
blkio.io_service_bytes
blkio.io_service_bytes_recursive
blkio.io_serviced
blkio.io_serviced_recursive
blkio.io_service_time
blkio.io_service_time_recursive
blkio.io_wait_time
blkio.io_wait_time_recursive
blkio.leaf_weight
blkio.leaf_weight_device
blkio.reset_stats
blkio.sectors
blkio.sectors_recursive
blkio.throttle.io_service_bytes
blkio.throttle.io_serviced
blkio.throttle.read_bps_device
blkio.throttle.read_iops_device
blkio.throttle.write_bps_device
blkio.throttle.write_iops_device
blkio.time
blkio.time_recursive
blkio.unaccounted_time
blkio.weight
blkio.weight_device
cgroup.clone_children
cgroup.procs
cgroup.sane_behavior
notify_on_release
release_agent
system.slice
tasks
user.slice
Cleaning cgclean.fk807p (freezer)
cgclean.fk807p/newroot
Left there is:
cgroup.clone_children
cgroup.procs
cgroup.sane_behavior
notify_on_release
release_agent
tasks
Cleaning cgclean.fk807p (cpuset)
cgclean.fk807p/newroot
Left there is:
cgroup.clone_children
cgroup.procs
cgroup.sane_behavior
cpuset.cpu_exclusive
cpuset.cpus
cpuset.effective_cpus
cpuset.effective_mems
cpuset.mem_exclusive
cpuset.mem_hardwall
cpuset.memory_migrate
cpuset.memory_pressure
cpuset.memory_pressure_enabled
cpuset.memory_spread_page
cpuset.memory_spread_slab
cpuset.mems
cpuset.sched_load_balance
cpuset.sched_relax_domain_level
notify_on_release
release_agent
tasks
Cleaning cgclean.fk807p (cpu,cpuacct)
cgclean.fk807p/newroot
Left there is:
cgroup.clone_children
cgroup.procs
cgroup.sane_behavior
cpuacct.stat
cpuacct.usage
cpuacct.usage_percpu
cpu.cfs_period_us
cpu.cfs_quota_us
cpu.shares
cpu.stat
notify_on_release
release_agent
system.slice
tasks
user.slice
Cleaning cgclean.fk807p (devices)
cgclean.fk807p/newroot
Left there is:
cgroup.clone_children
cgroup.procs
cgroup.sane_behavior
devices.allow
devices.deny
devices.list
notify_on_release
release_agent
system.slice
tasks
user.slice
Cleaning cgclean.fk807p (memory)
cgclean.fk807p/newroot
Left there is:
cgroup.clone_children
cgroup.event_control
cgroup.procs
cgroup.sane_behavior
memory.failcnt
memory.force_empty
memory.kmem.failcnt
memory.kmem.limit_in_bytes
memory.kmem.max_usage_in_bytes
memory.kmem.slabinfo
memory.kmem.tcp.failcnt
memory.kmem.tcp.limit_in_bytes
memory.kmem.tcp.max_usage_in_bytes
memory.kmem.tcp.usage_in_bytes
memory.kmem.usage_in_bytes
memory.limit_in_bytes
memory.max_usage_in_bytes
memory.memsw.failcnt
memory.memsw.limit_in_bytes
memory.memsw.max_usage_in_bytes
memory.memsw.usage_in_bytes
memory.move_charge_at_immigrate
memory.numa_stat
memory.oom_control
memory.pressure_level
memory.soft_limit_in_bytes
memory.stat
memory.swappiness
memory.usage_in_bytes
memory.use_hierarchy
notify_on_release
release_agent
system.slice
tasks
user.slice
Cleaning cgclean.fk807p (net_cls,net_prio)
cgclean.fk807p/newroot
Left there is:
cgroup.clone_children
cgroup.procs
cgroup.sane_behavior
net_cls.classid
net_prio.ifpriomap
net_prio.prioidx
notify_on_release
release_agent
tasks
Cleaning cgclean.fk807p (name=systemd)
cgclean.fk807p/newroot
Left there is:
cgroup.clone_children
cgroup.procs
cgroup.sane_behavior
notify_on_release
release_agent
system.slice
tasks
user.slice
Run criu dump
Running zdtm/static/cgroup02.hook(--pre-restore)
Run criu restore
=[log]=> dump/zdtm/static/cgroup02/24/1/restore.log
------------------------ grep Error ------------------------
(00.683227)     24: Error (cgroup.c:1075): cg: couldn't unshare cgns: Invalid argument
(00.683235)     24: Error (cgroup.c:1089): cg: failed preparing cgns(00.683596) Error (cr-restore.c:2134): Restoring FAILED.
------------------------ ERROR OVER ------------------------
################ Test zdtm/static/cgroup02 FAIL at CRIU restore ################

-- Pavel