On Mon, Oct 10, 2016 at 3:11 PM, nicola.gentile.to <nicola.gentile.to@gmail.com> wrote:

Hi,

I have a problem. I try to put in maintenance mode the host, but the message that is displayed is this

"Error while executing action: Cannot switch Host to Maintenance mode. Host has asynchronous running tasks, wait for operation to complete and retry."

I checked the log file engine.log:

"2016-10-10 14:32:53,841 INFO [org.ovirt.engine.core.bll.MaintenanceNumberOfVdssCommand] (default task-15) [697e9736] Lock Acquired to object 'EngineLock:{exclusiveLocks='null', sharedLocks='[00000001-0001-0001-0001-00000000016a=<POOL, ACTION_TYPE_FAILED_OBJECT_LOCKED>]'}'
2016-10-10 14:32:53,843 WARN [org.ovirt.engine.core.bll.MaintenanceNumberOfVdssCommand] (default task-15) [697e9736] Validation of action 'MaintenanceNumberOfVdss' failed for user admin@internal-authz. Reasons: VAR__TYPE__HOST,VAR__ACTION__MAINTENANCE,VDS_CANNOT_MAINTENANCE_SPM_WITH_RUNNING_TASKS
2016-10-10 14:32:53,843 INFO [org.ovirt.engine.core.bll.MaintenanceNumberOfVdssCommand] (default task-15) [697e9736] Lock freed to object 'EngineLock:{exclusiveLocks='null', sharedLocks='[00000001-0001-0001-0001-00000000016a=<POOL, ACTION_TYPE_FAILED_OBJECT_LOCKED>]'}'
2016-10-10 14:32:53,851 ERROR [org.ovirt.engine.api.restapi.resource.AbstractBackendResource] (default task-15) [] Operation Failed: [Cannot switch Host to Maintenance mode. Host has asynchronous running tasks,"

How can I revolve?

It seams that you have ongoing async operation on that host. If this it's true, I'd suggest to wait for them to complete.

If it's not the case or that tasks somehow died, on the engine machine you have the /usr/share/ovirt-engine/setup/dbutils/taskcleaner.sh utility to remove that zombies.

Regards

Nicola

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