Hi,
I update the hosted engine to 4.4.7 and one of the 2 nodes where the engine is running.
Current status is:
- Hosted engine at 4.4.7 running on Node 0
- Node 0 at 4.4.6
- Node 1 at 4.4.7

Now, moving Node 0 to maintenance successfully moved the SPM from Node 0 to Node 1 but while trying to migrate hosted engine I get on Node 0 vdsm.log:
2021-07-06 12:25:07,882+0000 INFO  (jsonrpc/5) [vdsm.api] START repoStats(domains=()) from=::ffff:10.46.8.133,35048, task_id=f12d7694-d2b5-4658-9e0d-3f0dc54aca93 (api:48)
2021-07-06 12:25:07,882+0000 INFO  (jsonrpc/5) [vdsm.api] FINISH repoStats return={'1996dc3b-d33f-49cb-b32a-8f7b1d50af5e': {'code': 0, 'lastCheck': '3.0', 'delay': '0.00114065', 'valid': True, 'version': 5, 'acq
uired': True, 'actual': True}} from=::ffff:10.46.8.133,35048, task_id=f12d7694-d2b5-4658-9e0d-3f0dc54aca93 (api:54)
2021-07-06 12:25:07,882+0000 INFO  (jsonrpc/5) [vdsm.api] START multipath_health() from=::ffff:10.46.8.133,35048, task_id=6515fac9-830a-4b6a-904e-cc1262e87f01 (api:48)
2021-07-06 12:25:07,882+0000 INFO  (jsonrpc/5) [vdsm.api] FINISH multipath_health return={} from=::ffff:10.46.8.133,35048, task_id=6515fac9-830a-4b6a-904e-cc1262e87f01 (api:54)
2021-07-06 12:25:07,883+0000 ERROR (migsrc/b2072331) [virt.vm] (vmId='b2072331-1558-4186-86b4-fa83af8eba95') can't connect to virtlogd: Unable to open system token /run/libvirt/common/system.token: Permission de
nied (migration:294)
2021-07-06 12:25:07,888+0000 INFO  (jsonrpc/5) [api.host] FINISH getStats return={'status': {'code': 0, 'message': 'Done'}, 'info': (suppressed)} from=::ffff:10.46.8.133,35048 (api:54)
2021-07-06 12:25:08,166+0000 ERROR (migsrc/b2072331) [virt.vm] (vmId='b2072331-1558-4186-86b4-fa83af8eba95') Failed to migrate (migration:467)
Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/vdsm/virt/migration.py", line 441, in _regular_run
    time.time(), machineParams
  File "/usr/lib/python3.6/site-packages/vdsm/virt/migration.py", line 537, in _startUnderlyingMigration
    self._perform_with_conv_schedule(duri, muri)
  File "/usr/lib/python3.6/site-packages/vdsm/virt/migration.py", line 626, in _perform_with_conv_schedule
    self._perform_migration(duri, muri)
  File "/usr/lib/python3.6/site-packages/vdsm/virt/migration.py", line 555, in _perform_migration
    self._migration_flags)
  File "/usr/lib/python3.6/site-packages/vdsm/virt/virdomain.py", line 159, in call
    return getattr(self._vm._dom, name)(*a, **kw)
  File "/usr/lib/python3.6/site-packages/vdsm/virt/virdomain.py", line 101, in f
    ret = attr(*args, **kwargs)
  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 2119, in migrateToURI3
    raise libvirtError('virDomainMigrateToURI3() failed')
libvirt.libvirtError: can't connect to virtlogd: Unable to open system token /run/libvirt/common/system.token: Permission denied
2021-07-06 12:25:08,197+0000 INFO  (jsonrpc/6) [api.virt] START getMigrationStatus() from=::ffff:10.46.8.133,35048, flow_id=4e86b85d, vmId=b2072331-1558-4186-86b4-fa83af8eba95 (api:48)
2021-07-06 12:25:08,197+0000 INFO  (jsonrpc/6) [api.virt] FINISH getMigrationStatus return={'status': {'code': 0, 'message': 'Done'}, 'migrationStats': {'status': {'code': 12, 'message': 'Fatal error during migr
ation'}, 'progress': 0}} from=::ffff:10.46.8.133,35048, flow_id=4e86b85d, vmId=b2072331-1558-4186-86b4-fa83af8eba95 (api:54)
On node 0:
# ls -lZ /run/libvirt/common/system.token
ls: cannot access '/run/libvirt/common/system.token': No such file or directory

On node 1:
# ls -lZ /run/libvirt/common/system.token
-rw-------. 1 root root system_u:object_r:virt_var_run_t:s0 32 Jul  6 09:29 /run/libvirt/common/system.token

any clue?
--

Sandro Bonazzola

MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV

Red Hat EMEA

sbonazzo@redhat.com   

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