Re: [ovirt-users] USER_CREATE_SNAPSHOT_FINISHED_FAILURE with Cinder storage stuck

[Matthias Leopold]

Am 2017-08-22 um 09:33 schrieb Maor Lipchuk:

On Mon, Aug 21, 2017 at 6:12 PM, Matthias Leopold
<matthias.leop...@meduniwien.ac.at> wrote:

Hi,

we're experimenting with Cinder/Ceph Storage on oVirt 4.1.3. When we tried
to snapshot a VM (2 disks on Cinder storage domain) the task never finished
and now seems to be in an uninterruptible loop. We tried to stop it in
various (brute force) ways, but the below messages (one of the disks as an
example) are cluttering engine.log every 10 seconds. We tried the following:

- deleting the VM
- restarting ovirt-engine service
- vdsClient -s 0 getAllTasksStatuses on SPM host (no result)
- restarting vdsmd service on SPM host
- /usr/share/ovirt-engine/setup/dbutils/taskcleaner.sh -u engine -d engine
-c c841c979-70ea-4e06-b9c4-9c5ce014d76d

None of this helped. How do we get rid of this failed transaction?

thx
matthias

2017-08-21 16:40:44,798+02 INFO
[org.ovirt.engine.core.utils.transaction.TransactionSupport]
(DefaultQuartzScheduler7) [080af640-bac3-4990-8bf4-6829551b538d] transaction
rolled back
2017-08-21 16:40:44,799+02 ERROR
[org.ovirt.engine.core.bll.job.ExecutionHandler] (DefaultQuartzScheduler7)
[080af640-bac3-4990-8bf4-6829551b538d] Exception:
org.springframework.dao.DataIntegrityViolationException:
CallableStatementCallback; SQL [{call insertstep(?, ?, ?, ?, ?, ?, ?, ?, ?,
?, ?, ?, ?, ?)}]; ERROR: insert or update on table "step" violates foreign
key constraint "fk_step_job"
2017-08-21 16:40:44,805+02 ERROR
[org.ovirt.engine.core.bll.snapshots.CreateAllSnapshotsFromVmCommand]
(DefaultQuartzScheduler7) [080af640-bac3-4990-8bf4-6829551b538d] Ending
command
'org.ovirt.engine.core.bll.snapshots.CreateAllSnapshotsFromVmCommand' with
failure.
2017-08-21 16:40:44,807+02 WARN
[org.ovirt.engine.core.bll.snapshots.CreateAllSnapshotsFromVmCommand]
(DefaultQuartzScheduler7) [080af640-bac3-4990-8bf4-6829551b538d] No snapshot
was created for VM 'c0235316-81c4-48be-9521-b86b338c7d20' which is in LOCKED
status
2017-08-21 16:40:44,810+02 INFO
[org.ovirt.engine.core.utils.transaction.TransactionSupport]
(DefaultQuartzScheduler7) [080af640-bac3-4990-8bf4-6829551b538d] transaction
rolled back
2017-08-21 16:40:44,810+02 WARN
[org.ovirt.engine.core.bll.lock.InMemoryLockManager]
(DefaultQuartzScheduler7) [080af640-bac3-4990-8bf4-6829551b538d] Trying to
release exclusive lock which does not exist, lock key:
'c0235316-81c4-48be-9521-b86b338c7d20VM'
2017-08-21 16:40:44,810+02 INFO
[org.ovirt.engine.core.bll.snapshots.CreateAllSnapshotsFromVmCommand]
(DefaultQuartzScheduler7) [080af640-bac3-4990-8bf4-6829551b538d] Lock freed
to object
'EngineLock:{exclusiveLocks='[c0235316-81c4-48be-9521-b86b338c7d20=VM]',
sharedLocks=''}'
2017-08-21 16:40:44,829+02 ERROR
[org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector]
(DefaultQuartzScheduler7) [080af640-bac3-4990-8bf4-6829551b538d] EVENT_ID:
USER_CREATE_SNAPSHOT_FINISHED_FAILURE(69), Correlation ID:
080af640-bac3-4990-8bf4-6829551b538d, Job ID:
a3be8af1-8d33-4d35-9672-215ac7c9959f, Call Stack: null, Custom Event ID: -1,
Message: Failed to complete snapshot 'test' creation for VM '<UNKNOWN>'.
2017-08-21 16:40:44,829+02 ERROR
[org.ovirt.engine.core.bll.tasks.CommandCallbacksPoller]
(DefaultQuartzScheduler7) [080af640-bac3-4990-8bf4-6829551b538d] Failed
invoking callback end method 'onFailed' for command
'c841c979-70ea-4e06-b9c4-9c5ce014d76d' with exception 'null', the callback
is marked for end method retries

Hi Matthias,

Can you please attach the full engine log contains the first error
occurred so we can trace its origin and fix it?
Does it reproduced constantly?

The engine does not use VDSM tasks to manage Cinder, the engine use
Cinder as an external provider using the COCO infrastructure for async
tasks.
The COCO tasks are managed in the database using the command_entities
table, basically if you will remove all references of the command id
from the command_entities and restart engine you should not see it any
more.

Regards,
Maor

Hi Maor,




--------------------------------------+--------------+--------------------------------------+--------



keep appearing and still cause messages in engine.log like



The SQL error messages like



are gone now. Please give me a hint how to get rid of these tasks.



Thanks a lot again
Best Regards
Matthias

thanks very much for replying. First i tried to clean the command_entities table plus restarting engine as you suggested. This didn't work entirely, these two entries engine=# select command_id, command_type, root_command_id, status from command_entities; command_id | command_type | root_command_id | status c841c979-70ea-4e06-b9c4-9c5ce014d76d | 206 | c841c979-70ea-4e06-b9c4-9c5ce014d76d | FAILED 65fa094e-1609-47ea-bf0d-611e3d5b9358 | 206 | 65fa094e-1609-47ea-bf0d-611e3d5b9358 | FAILED 2017-08-22 11:54:57,109+02 WARN [org.ovirt.engine.core.bll.snapshots.CreateAllSnapshotsFromVmCommand] (DefaultQuartzScheduler8) [080af640-bac3-4990-8bf4-6829551b538d] No snapshot was created for VM 'c0235316-81c4-48be-9521-b86b338c7d20' which is in LOCKED status 2017-08-22 11:54:57,112+02 INFO [org.ovirt.engine.core.utils.transaction.TransactionSupport] (DefaultQuartzScheduler8) [080af640-bac3-4990-8bf4-6829551b538d] transaction rolled back 2017-08-22 11:54:57,112+02 WARN [org.ovirt.engine.core.bll.lock.InMemoryLockManager] (DefaultQuartzScheduler8) [080af640-bac3-4990-8bf4-6829551b538d] Trying to release exclusive lock which does not exist, lock key: 'c0235316-81c4-48be-9521-b86b338c7d20VM' 2017-08-22 11:54:57,112+02 INFO [org.ovirt.engine.core.bll.snapshots.CreateAllSnapshotsFromVmCommand] (DefaultQuartzScheduler8) [080af640-bac3-4990-8bf4-6829551b538d] Lock freed to object 'EngineLock:{exclusiveLocks='[c0235316-81c4-48be-9521-b86b338c7d20=VM]', sharedLocks=''}' 2017-08-22 11:54:57,131+02 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (DefaultQuartzScheduler8) [080af640-bac3-4990-8bf4-6829551b538d] EVENT_ID: USER_CREATE_SNAPSHOT_FINISHED_FAILURE(69), Correlation ID: 080af640-bac3-4990-8bf4-6829551b538d, Call Stack: null, Custom Event ID: -1, Message: Failed to complete snapshot 'test' creation for VM '<UNKNOWN>'. 2017-08-22 11:54:57,132+02 ERROR [org.ovirt.engine.core.bll.tasks.CommandCallbacksPoller] (DefaultQuartzScheduler8) [080af640-bac3-4990-8bf4-6829551b538d] Failed invoking callback end method 'onFailed' for command 'c841c979-70ea-4e06-b9c4-9c5ce014d76d' with exception 'null', the callback is marked for end method retries 2017-08-22 11:54:57,138+02 ERROR [org.ovirt.engine.core.bll.snapshots.CreateAllSnapshotsFromVmCommand] (DefaultQuartzScheduler8) [54caec87-ba59-4e9f-acf3-7fb5d94658e4] Ending command 'org.ovirt.engine.core.bll.snapshots.CreateAllSnapshotsFromVmCommand' with failure. ERROR: insert or update on table "step" violates foreign key constraint "fk_step_job" To trace the original error i'm attaching a minute of engine logs when the error first occurred (i hope this works when sending to the list). We have not tried to reproduce it yet, but we are planning to test cinder/ceph storage more extensively, so we'll be looking at this again. At first i would feel a lot better when i could clean up the last error completely.

engine.log.gz
Description: application/gzip

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