Please attach the full engine log (at least from the moment you attempted the to delete).
Do you have access to the host the VM is running on? The vdsm log is available at /var/log/vdsm/vdsm.log

On Tue, Nov 21, 2017 at 2:17 PM, Arthur Melo <arthur@afabrica.net> wrote:
engine.log
------------------
2017-11-21 10:15:02,536-02 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (DefaultQuartzScheduler2) [70cc2ffa-2414-4a00-9e24-6b6378408a9d] EVENT_ID: USER_REMOVE_SNAPSHOT_FINISHED_FAILURE(357), Correlation ID: 70cc2ffa-2414-4a00-9e24-6b6378408a9d, Job ID: ec197072-7c38-42b6-9aef-99635d4ee135, Call Stack: null, Custom ID: null, Custom Event ID: -1, Message: Failed to delete snapshot '<UNKNOWN>' for VM 'proxy03'.
2017-11-21 10:15:02,537-02 ERROR [org.ovirt.engine.core.bll.tasks.CommandCallbacksPoller] (DefaultQuartzScheduler2) [70cc2ffa-2414-4a00-9e24-6b6378408a9d] Failed invoking callback end method 'onFailed' for command 'a84519fe-6b23-4084-84a2-b7964cbcde26' with exception 'null', the callback is marked for end method retries
2017-11-21 10:15:12,551-02 ERROR [org.ovirt.engine.core.bll.snapshots.RemoveSnapshotCommand] (DefaultQuartzScheduler5) [70cc2ffa-2414-4a00-9e24-6b6378408a9d] Ending command 'org.ovirt.engine.core.bll.snapshots.RemoveSnapshotCommand' with failure.
2017-11-21 10:15:12,555-02 INFO  [org.ovirt.engine.core.utils.transaction.TransactionSupport] (DefaultQuartzScheduler5) [70cc2ffa-2414-4a00-9e24-6b6378408a9d] transaction rolled back
2017-11-21 10:15:12,567-02 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (DefaultQuartzScheduler5) [70cc2ffa-2414-4a00-9e24-6b6378408a9d] EVENT_ID: USER_REMOVE_SNAPSHOT_FINISHED_FAILURE(357), Correlation ID: 70cc2ffa-2414-4a00-9e24-6b6378408a9d, Job ID: ec197072-7c38-42b6-9aef-99635d4ee135, Call Stack: null, Custom ID: null, Custom Event ID: -1, Message: Failed to delete snapshot '<UNKNOWN>' for VM 'proxy03'.
2017-11-21 10:15:12,567-02 ERROR [org.ovirt.engine.core.bll.tasks.CommandCallbacksPoller] (DefaultQuartzScheduler5) [70cc2ffa-2414-4a00-9e24-6b6378408a9d] Failed invoking callback end method 'onFailed' for command 'a84519fe-6b23-4084-84a2-b7964cbcde26' with exception 'null', the callback is marked for end method retries
2017-11-21 10:15:22,582-02 ERROR [org.ovirt.engine.core.bll.snapshots.RemoveSnapshotCommand] (DefaultQuartzScheduler10) [70cc2ffa-2414-4a00-9e24-6b6378408a9d] Ending command 'org.ovirt.engine.core.bll.snapshots.RemoveSnapshotCommand' with failure.
2017-11-21 10:15:22,585-02 INFO  [org.ovirt.engine.core.utils.transaction.TransactionSupport] (DefaultQuartzScheduler10) [70cc2ffa-2414-4a00-9e24-6b6378408a9d] transaction rolled back
2017-11-21 10:15:22,599-02 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (DefaultQuartzScheduler10) [70cc2ffa-2414-4a00-9e24-6b6378408a9d] EVENT_ID: USER_REMOVE_SNAPSHOT_FINISHED_FAILURE(357), Correlation ID: 70cc2ffa-2414-4a00-9e24-6b6378408a9d, Job ID: ec197072-7c38-42b6-9aef-99635d4ee135, Call Stack: null, Custom ID: null, Custom Event ID: -1, Message: Failed to delete snapshot '<UNKNOWN>' for VM 'proxy03'.
2017-11-21 10:15:22,600-02 ERROR [org.ovirt.engine.core.bll.tasks.CommandCallbacksPoller] (DefaultQuartzScheduler10) [70cc2ffa-2414-4a00-9e24-6b6378408a9d] Failed invoking callback end method 'onFailed' for command 'a84519fe-6b23-4084-84a2-b7964cbcde26' with exception 'null', the callback is marked for end method retries
------------------

I don't have vdsm log. (I don't know why).

Atenciosamente,
Arthur Melo
Linux User #302250


2017-11-21 10:14 GMT-02:00 Benny Zlotnik <bzlotnik@redhat.com>:
Please attach engine and vdsm logs

On Tue, Nov 21, 2017 at 2:11 PM, Arthur Melo <arthur@afabrica.net> wrote:
Can someone help me with this error?


Failed to delete snapshot '<UNKNOWN>' for VM 'proxy03'.



Atenciosamente,
Arthur Melo
Linux User #302250


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