Bug 1409246
| Summary: | VM migration failing with "Returning backwards compatible migration error code" | |||
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| Product: | Red Hat Enterprise Virtualization Manager | Reporter: | Gordon Watson <gwatson> | |
| Component: | vdsm | Assignee: | Martin Betak <mbetak> | |
| Status: | CLOSED ERRATA | QA Contact: | Israel Pinto <ipinto> | |
| Severity: | high | Docs Contact: | ||
| Priority: | unspecified | |||
| Version: | 4.0.2 | CC: | bazulay, ddash, gklein, gwatson, lsurette, mavital, mgoldboi, michal.skrivanek, mkalinin, shipatil, srevivo, tjelinek, trichard, ycui, ykaul | |
| Target Milestone: | ovirt-4.1.0-rc | Keywords: | ZStream | |
| Target Release: | --- | |||
| Hardware: | Unspecified | |||
| OS: | Linux | |||
| Whiteboard: | ||||
| Fixed In Version: | Doc Type: | Bug Fix | ||
| Doc Text: |
Previously, the Manager didn't send migration limits to VDSM during VM migration operations. The destination VDSM understood this lack of migration limits as migration from an old source that didn't support the retry logic, failing the migration altogether instead of having the source attempt a proper retry. This could ultimately result in the host entering an error state; especially problematic, for example, when attempting to put a host to maintenance.
Now, the Manager sends migrations limits as part of the VM migration operation, so the migration retry logic between the source and destination VDSM is properly triggered when necessary.
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Story Points: | --- | |
| Clone Of: | ||||
| : | 1413939 (view as bug list) | Environment: | ||
| Last Closed: | 2017-04-25 00:41:28 UTC | Type: | Bug | |
| Regression: | --- | Mount Type: | --- | |
| Documentation: | --- | CRM: | ||
| Verified Versions: | Category: | --- | ||
| oVirt Team: | Virt | RHEL 7.3 requirements from Atomic Host: | ||
| Cloudforms Team: | --- | Target Upstream Version: | ||
| Embargoed: | ||||
| Bug Depends On: | ||||
| Bug Blocks: | 1413939 | |||
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Description
Gordon Watson
2016-12-30 17:01:37 UTC
the problem is on the engine side where the incoming/outgoing limits are not sent Verify with:
Engine: Version 4.1.0.3-0.1.el7
Step:
migrate vm and check the incoming/outgoing limit is set.
Results:
Engine log: [maxOutgoingMigrations = 2, maxIncomingMigrations = 2]
2017-02-07 14:41:47,859+02 INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.MigrateBrokerVDSCommand] (org.ovirt.thread.pool-6-thread-50) [3add7741-1207-4618-b2f7-d8e51cad6c6d] START, MigrateBrokerVDSCommand(HostName = host_mixed_1, MigrateVDSCommandParameters:{runAsync='true', hostId='b879d50c-67e0-479a-9300-a7b7b2f1339c', vmId='1b1217db-ff0a-4e98-b408-a4f71e8af776', srcHost='seal08.qa.lab.tlv.redhat.com', dstVdsId='30ef250f-3a7d-4ed5-a8ca-75834da14cdb', dstHost='seal09.qa.lab.tlv.redhat.com:54321', migrationMethod='ONLINE', tunnelMigration='false', migrationDowntime='0', autoConverge='true', migrateCompressed='false', consoleAddress='null', maxBandwidth='5000', enableGuestEvents='true', maxIncomingMigrations='2', maxOutgoingMigrations='2', convergenceSchedule='[init=[{name=setDowntime, params=[100]}], stalling=[{limit=1, action={name=setDowntime, params=[150]}}, {limit=2, action={name=setDowntime, params=[200]}}, {limit=3, action={name=setDowntime, params=[300]}}, {limit=4, action={name=setDowntime, params=[400]}}, {limit=6, action={name=setDowntime, params=[500]}}, {limit=-1, action={name=abort, params=[]}}]]'}), log id: 451aeef4
vdms log: [incomingLimit = 2 , outgoingLimit = 2]
2017-02-07 14:41:42,272 INFO (periodic/2) [dispatcher] Run and protect: repoStats, Return response: {'06a1f8f4-81aa-49b0-b831-88284b222737': {'code': 0, 'actual': True, 'version': 0, 'acquired': True, 'delay': '0.000222759', 'lastCheck': '5.5', 'valid': True}, '62430d5b-8c57-4147-92dc-1ea907963ff9': {'code': 0, 'actual': True, 'version': 0, 'acquired': True, 'delay': '0.000242301', 'lastCheck': '0.9', 'valid': True}, 'fa65b176-cb84-41fd-8bf6-dae05dcc2595': {'code': 0, 'actual': True, 'version': 4, 'acquired': True, 'delay': '0.000257589', 'lastCheck': '0.9', 'valid': True}, 'bbb7e15c-7884-4d52-8bc4-d2de58e21a78': {'code': 0, 'actual': True, 'version': 4, 'acquired': True, 'delay': '0.000227469', 'lastCheck': '0.9', 'valid': True}} (logUtils:52)
2017-02-07 14:41:46,857 INFO (jsonrpc/7) [vdsm.api] START migrate args=(<virt.vm.Vm object at 0x371fad0>, {'incomingLimit': 2, 'src': 'seal08.qa.lab.tlv.redhat.com', 'dstqemu': '10.35.117.90', 'autoConverge': 'true', 'tunneled': 'false', 'enableGuestEvents': True, 'dst': 'seal09.qa.lab.tlv.redhat.com:54321', 'convergenceSchedule': {'init': [{'params': ['100'], 'name': 'setDowntime'}], 'stalling': [{'action': {'params': ['150'], 'name': 'setDowntime'}, 'limit': 1}, {'action': {'params': ['200'], 'name': 'setDowntime'}, 'limit': 2}, {'action': {'params': ['300'], 'name': 'setDowntime'}, 'limit': 3}, {'action': {'params': ['400'], 'name': 'setDowntime'}, 'limit': 4}, {'action': {'params': ['500'], 'name': 'setDowntime'}, 'limit': 6}, {'action': {'params': [], 'name': 'abort'}, 'limit': -1}]}, 'vmId': '1b1217db-ff0a-4e98-b408-a4f71e8af776', 'abortOnError': 'true', 'outgoingLimit': 2, 'compressed': 'false', 'maxBandwidth': 5000, 'method': 'online', 'mode': 'remote'}) kwargs={} (api:37)
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