Created attachment 1699598 [details]
loga

Description of problem:
VM with disk on iscsi on PPC environment fails to start on host with the following errors:

Engine.log:
2020-07-02 09:18:50,521+03 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (ForkJoinPool-1-worker-17) [14c64a7d] EVENT_ID: VM_DOWN_ERROR(119), VM vm_TestCase5138_0209130682 is down with error. Exit message: Wake up from hibernation failed:internal error: child reported (status=125): unable to set security context 'system_u:object_r:virt_content_t:s0' on '/rhev/data-center/mnt/blockSD/97370c99-3549-4686-8536-d067f82e5daf/images/1bc19190-6f96-4d7e-9db3-a25c87451aaa/f5dd8cc0-7491-4574-a066-00ffcc0382fb': No such file or directory.
2020-07-02 09:18:50,527+03 ERROR [org.ovirt.engine.core.vdsbroker.monitoring.VmsMonitoring] (ForkJoinPool-1-worker-17) [14c64a7d] Rerun VM 'ad70f664-cf00-4390-a8dc-ccb267dd283f'. Called from VDS 'host_mixed_2'
2020-07-02 09:18:50,537+03 WARN  [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (EE-ManagedThreadFactory-engine-Thread-17496) [14c64a7d] EVENT_ID: USER_INITIATED_RUN_VM_FAILED(151), Failed to run VM vm_TestCase5138_0209130682 on Host host_mixed_2.

VDSM.log:
2020-07-02 09:18:48,754+0300 ERROR (vm/ad70f664) [virt.vm] (vmId='ad70f664-cf00-4390-a8dc-ccb267dd283f') The vm start 
process failed (vm:871)
Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/vdsm/virt/vm.py", line 801, in _startUnderlyingVm
    self._run()
  File "/usr/lib/python3.6/site-packages/vdsm/virt/vm.py", line 2570, in _run
    fname, srcDomXML, libvirt.VIR_DOMAIN_SAVE_PAUSED)
  File "/usr/lib/python3.6/site-packages/vdsm/common/libvirtconnection.py", line 131, in wrapper
    ret = f(*args, **kwargs)
  File "/usr/lib/python3.6/site-packages/vdsm/common/function.py", line 94, in wrapper
    return func(inst, *args, **kwargs)
  File "/usr/lib64/python3.6/site-packages/libvirt.py", line 4851, in restoreFlags
    if ret == -1: raise libvirtError ('virDomainRestoreFlags() failed', conn=self)
libvirt.libvirtError: internal error: child reported (status=125): unable to set security context 'system_u:object_r:v
irt_content_t:s0' on '/rhev/data-center/mnt/blockSD/97370c99-3549-4686-8536-d067f82e5daf/images/1bc19190-6f96-4d7e-9db
3-a25c87451aaa/f5dd8cc0-7491-4574-a066-00ffcc0382fb': No such file or directory

Saw it in our automation. After it fails, it starts on another host.
In single host environment, the VM fails to start in the first attempt.


Version-Release number of selected component (if applicable):
rhv-4.4.1-5:
vdsm-4.40.20-1.el8ev.ppc64le
ovirt-engine-4.4.1.5-0.17.el8ev.noarch

How reproducible:
100%

Steps to Reproduce:
1. Create VM with iSCSI disk
2. Run the VM
3. Create memory snapshot
4. Power off the VM
5. Preview snapshot
6. Run the VM

Actual results:
Operation fails

Expected results:
Operation should succeed.

Additional info:
Logs are attached.