GabrielBrascher opened a new issue #5407:
URL: https://github.com/apache/cloudstack/issues/5407
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##### ISSUE TYPE
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* Bug Report
##### COMPONENT NAME
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API
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##### CLOUDSTACK VERSION
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branch.
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4.16
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##### CONFIGURATION
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Information about the configuration if relevant, e.g. basic network,
advanced networking, etc. N/A otherwise
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- KVM
- Root disk on Local storage
- DataDisk allocated on any shared storage (tested on NFS, RBD)
##### OS / ENVIRONMENT
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##### SUMMARY
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When migrating a VM with root disk in local storage + datadisk (always
shared) it fails.
There are two ways of performing such a migration via the
[migrateVirtualMachineWithVolume](https://cloudstack.apache.org/api/apidocs-4.15/apis/migrateVirtualMachineWithVolume.html).
1. `migrate virtualmachinewithvolume virtualmachineid=<VM_ID>
hostid=<HOST_ID>`
2. `migrate virtualmachinewithvolume virtualmachineid=<VM_ID>
hostid=<HOST_ID> migrateto[0].volume=<VOLUME_ID> migrateto[0].pool=<POOL_ID>`
In the first case, the execution flow has no mapped volumes; however, it
assumes that all the volumes on the VM should be migrated and maps such
migrations. Causing exception during migration as the data disk has the wrong
map.
In the second scenario, CloudStack holds the provided map of `volume ->
storages` but at the end, it turns out to try to migrate all the volumes
ignoring the provided map.
##### STEPS TO REPRODUCE
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test-case. Use Screenshots if accurate.
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<!-- Paste example playbooks or commands between quotes below -->
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Migrate a VM with at least 1 Datadisk and its Root disk allocated in local
storage.
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##### EXPECTED RESULTS
<!-- What did you expect to happen when running the steps above? -->
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VM is live-migrated along with its Root disk to another host (& respective
local storage pool) in the same cluster
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##### ACTUAL RESULTS
<!-- What actually happened? -->
<!-- Paste verbatim command output between quotes below -->
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Fails to migrate VM
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