[ovirt-users] VM switched off when migration for host maintenance fails

[Yaniv Kaul]

On Thu, Mar 16, 2017 at 12:56 PM, Eduardo Mayoral <emayoral at arsys.es> wrote:

> Hi,
>
>     An interesting thing just happened on my oVirt deployment.
>
>     While setting a host for maintenance, one of the VMs running on that
> host failed to migrate. Then ovirt-engine for some reason turned the VM
> off. Here are the relevant log lines from engine.log:
>
>
>
>
> 2017-03-16 09:56:23,324Z INFO
> [org.ovirt.engine.core.bll.MigrateVmCommand] (default task-60)
> [61a52216] Lock Acquired to object
> 'EngineLock:{exclusiveLocks='[422663a9-d712-4992-7c81-165b2976073e=<VM,
> ACTION_TYPE_FAILED_VM_IS_BEING_MIGRATED$VmName
> entorno127.arsysdesarrollo.lan>]', sharedLocks='null'}'
> 2017-03-16 09:56:23,957Z INFO
> [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector]
> (default task-60) [61a52216] EVENT_ID:
> VM_MIGRATION_START_SYSTEM_INITIATED(67), Correlation ID: 61a52216, Job
> ID: fbc5e0d7-4618-4ca8-b7a7-0fd9a43f490f, Call Stack: null, Custom Event
> ID: -1, Message: Migration initiated by system (VM:
> entorno127.arsysdesarrollo.lan, Source: llkk594.arsyslan.es,
> Destination: llkk593.arsyslan.es, Reason: Host preparing for maintenance).
> 2017-03-16 09:56:26,818Z INFO
> [org.ovirt.engine.core.vdsbroker.monitoring.VmAnalyzer]
> (DefaultQuartzScheduler10) [7c6c403b-0a82-47aa-aeb4-57fbe06e20e1] VM
> '422663a9-d712-4992-7c81-165b2976073e'(entorno127.arsysdesarrollo.lan)
> was unexpectedly detected as 'MigratingTo' on VDS
> '43f43ec5-e51d-400d-8569-261c98382e3a'(llkk593.arsyslan.es) (expected on
> '11a82467-afa4-4e4e-bd92-3383082d0a5e')
> 2017-03-16 09:56:42,149Z INFO
> [org.ovirt.engine.core.vdsbroker.monitoring.VmAnalyzer]
> (DefaultQuartzScheduler10) [fac8ade9-a867-4ff7-aac5-912f78cc3bb5] VM
> '422663a9-d712-4992-7c81-165b2976073e'(entorno127.arsysdesarrollo.lan)
> was unexpectedly detected as 'MigratingTo' on VDS
> '43f43ec5-e51d-400d-8569-261c98382e3a'(llkk593.arsyslan.es) (expected on
> '11a82467-afa4-4e4e-bd92-3383082d0a5e')
> 2017-03-16 09:56:54,755Z INFO
> [org.ovirt.engine.core.vdsbroker.monitoring.VmAnalyzer]
> (DefaultQuartzScheduler3) [54fa9a1b-fddb-4812-b5d2-06cf92834709] VM
> '422663a9-d712-4992-7c81-165b2976073e'(entorno127.arsysdesarrollo.lan)
> moved from 'MigratingFrom' --> 'Down'
> 2017-03-16 09:56:54,755Z INFO
> [org.ovirt.engine.core.vdsbroker.monitoring.VmAnalyzer]
> (DefaultQuartzScheduler3) [54fa9a1b-fddb-4812-b5d2-06cf92834709] Handing
> over VM
> '422663a9-d712-4992-7c81-165b2976073e'(entorno127.arsysdesarrollo.lan)
> to Host '43f43ec5-e51d-400d-8569-261c98382e3a'. Setting VM to status
> 'MigratingTo'
> 2017-03-16 09:56:58,160Z INFO
> [org.ovirt.engine.core.vdsbroker.monitoring.VmAnalyzer]
> (DefaultQuartzScheduler4) [dd4ea7bb-85bc-410e-9a8f-357c28d85d1c] VM
> '422663a9-d712-4992-7c81-165b2976073e'(entorno127.arsysdesarrollo.lan)
> is running in db and not running on VDS
> '43f43ec5-e51d-400d-8569-261c98382e3a'(llkk593.arsyslan.es)
> 2017-03-16 09:56:58,161Z INFO
> [org.ovirt.engine.core.vdsbroker.monitoring.VmAnalyzer]
> (DefaultQuartzScheduler4) [dd4ea7bb-85bc-410e-9a8f-357c28d85d1c] add VM
> '422663a9-d712-4992-7c81-165b2976073e'(entorno127.arsysdesarrollo.lan)
> to rerun treatment
>   turn to maintenance while VMs are still running on it.(VM:
> entorno127.arsysdesarrollo.lan, Source: llkk594.arsyslan.es,
> Destination: llkk593.arsyslan.es).
> 2017-03-16 09:56:59,193Z INFO
> [org.ovirt.engine.core.bll.MigrateVmCommand]
> (org.ovirt.thread.pool-7-thread-27) [14d40a88] Lock freed to object
> 'EngineLock:{exclusiveLocks='[422663a9-d712-4992-7c81-165b2976073e=<VM,
> ACTION_TYPE_FAILED_VM_IS_BEING_MIGRATED$VmName
> entorno127.arsysdesarrollo.lan>]', sharedLocks='null'}'
>
> Now, I understand an VM migration may fail for a number of reasons, but
> in that case, shouldn't the VM keep running on the source host? I do not
> quite understand what happened here or how to avoid it in the future.
>

Can you share vdsm logs from both source and destination?
Y.


>
> Best regards,
>
> --
> Eduardo Mayoral Jimeno (emayoral at arsys.es)
> Administrador de sistemas. Departamento de Plataformas. Arsys internet.
> +34 941 620 145 ext. 5153
>
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> http://lists.ovirt.org/mailman/listinfo/users
>
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