GitHub user Rubueno created a discussion: Ceph cluster full, how to live
migrate a VM and one of its volumes to a different host and pool?
We are running into a full ceph cluster. How can we live migrate a VM to a
different host and one of its volumes to a different pool? Currently we cannot
migrate just the volume to a different pool because it's not possible to update
the volume details in KVM without migrating a VM. Migrating a VM to a different
host and also specifying a different pool results in:
```
2025-09-02 10:17:37,418 ERROR [o.a.c.e.o.VolumeOrchestrator]
(Work-Job-Executor-103:ctx-769ddfe9 job-602372/job-602373 ctx-fc1a004e)
(logid:93387da3) Failed to migrate VM [VM instance
{"id":20704,"instanceName":"i-960-20704-VM","state":"Migrating","type":"User","uuid":"75ccad2e-59b3-4114-8366-c2e0b5808d70"}]
along with its volumes due to [Can't find strategy to move data. Source Host:
hv-138-f14-21.ams02.my.org, Destination Host: hv-138-a05-30.ams02.my.org,
Volume UUIDs:
5b7c9988-8c8b-44f3-a672-3c5f32947ec3,ed3feacd-995d-4777-b3bb-f73f3e8b8cff].
```
GitHub link: https://github.com/apache/cloudstack/discussions/11559
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