nvazquez opened a new issue #4090:
URL: https://github.com/apache/cloudstack/issues/4090
Migration of VMs with removed snapshots fail when the DB record of deleted
snapshot is marked as 'removed' (after garbage collection)
##### ISSUE TYPE
* Bug Report
##### COMPONENT NAME
~~~
API
~~~
##### CLOUDSTACK VERSION
~~~
4.13.0
~~~
##### CONFIGURATION
Advanced zone
At least 2 clusters
XCP-ng 7.6 hosts
##### OS / ENVIRONMENT
##### SUMMARY
Inter-cluster migration fail under certain conditions. It was found that
trying to migrate a VM in which one of their volumes snapshots was removed does
not fail when the DB record has:
- state = 'Destroyed'
- removed = NULL
However, after garbage collection, the removed filed gets updated and after
that, any migration attempt fails with NullPointerException
##### STEPS TO REPRODUCE
~~~
Deploy VM on cluster 1
Create ROOT volume snapshot
Remove volume snapshot
Wait until DB entry gets the 'removed' not null
Migrate VM to another cluster with storage motion
~~~
##### EXPECTED RESULTS
~~~
Migration succeeds
~~~
##### ACTUAL RESULTS
~~~
2020-05-05 04:32:17,770 DEBUG [c.c.a.m.DirectAgentAttache]
(DirectAgent-157:ctx-0f4faa96) (logid:8c041fe2) Seq 6-1901081992703924074:
Executing request
2020-05-05 04:32:17,808 DEBUG [c.c.a.m.DirectAgentAttache]
(DirectAgent-157:ctx-0f4faa96) (logid:7bd1f9b7) Seq 6-1901081992703924074:
Response Received:
2020-05-05 04:32:17,808 DEBUG [c.c.a.t.Request]
(DirectAgent-157:ctx-0f4faa96) (logid:7bd1f9b7) Seq 6-1901081992703924074:
Processing: { Ans: , MgmtId: 52243264806, via: 6(dc04-xcpcloud-h47.one.local),
Ver: v1, Flags: 10, [{"com.cloud.agent.api.MigrateWithStorageCompleteAnsw
er":{"volumeTos":[{"path":"a80b5499-f1c9-40bc-80fa-18c1084a37cd","accountId":0,"id":6},{"path":"4306c091-8df9-4589-be24-1ac4d9314ec7","accountId":0,"id":7}],"result":true,"wait":0}}]
}
2020-05-05 04:32:17,808 DEBUG [c.c.a.t.Request]
(Work-Job-Executor-25:ctx-ce0203f2 job-241/job-242 ctx-0fb2548d)
(logid:7bd1f9b7) Seq 6-1901081992703924074: Received: { Ans: , MgmtId:
52243264806, via: 6(dc04-xcpcloud-h47.one.local), Ver: v1, Flags: 10, {
MigrateWithStorageC
ompleteAnswer } }
2020-05-05 04:32:17,838 DEBUG [o.a.c.s.s.SnapshotObject]
(Work-Job-Executor-25:ctx-ce0203f2 job-241/job-242 ctx-0fb2548d)
(logid:7bd1f9b7) Failed to update state:java.lang.NullPointerException
2020-05-05 04:32:17,852 ERROR [o.a.c.s.v.VolumeServiceImpl]
(Work-Job-Executor-25:ctx-ce0203f2 job-241/job-242 ctx-0fb2548d)
(logid:7bd1f9b7) Failed to process copy volume callback
2020-05-05 04:32:17,859 DEBUG [o.a.c.e.o.VolumeOrchestrator]
(Work-Job-Executor-25:ctx-ce0203f2 job-241/job-242 ctx-0fb2548d)
(logid:7bd1f9b7) Failed to migrated vm VM[User|i-17-5-VM] along with its
volumes. java.lang.NullPointerException
2020-05-05 04:32:17,859 INFO [c.c.v.VirtualMachineManagerImpl]
(Work-Job-Executor-25:ctx-ce0203f2 job-241/job-242 ctx-0fb2548d)
(logid:7bd1f9b7) Migration was unsuccessful. Cleaning up: VM[User|i-17-5-VM]
~~~
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