Libvirt Storage Volume Renaming: Difference between revisions
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There is no [[virsh]] command to rename a volume, but it can be achieved via the following sequence of steps: | There is no [[virsh]] command to rename a volume, but it can be achieved via the following sequence of steps: | ||
1. Shutdown all the virtual machines that use the volume | 1. Shutdown all the virtual machines that use the volume: | ||
2. | virsh shutdown test-vm | ||
2. Clone the volume, under a different name. | |||
virsh vol-clone --pool main-storage-pool test-volume.raw test-volume-2.raw | |||
For more details, see [[virsh vol-clone]]. | |||
3. Edit the definition of the virtual machines using the volume, and change the name of the logical volume in the definition. | |||
Replace: | |||
... | |||
<disk type='file' device='disk'> | |||
<driver name='qemu' type='raw'/> | |||
<source file='/main-storage-pool/<b>test-volume.raw</b>'/> | |||
<target dev='vdb' bus='virtio'/> | |||
<address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/> | |||
</disk> | |||
... | |||
with | |||
... | |||
<disk type='file' device='disk'> | |||
<driver name='qemu' type='raw'/> | |||
<source file='/main-storage-pool/<b>test-volume-2.raw</b>'/> | |||
<target dev='vdb' bus='virtio'/> | |||
<address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/> | |||
</disk> | |||
... | |||
4. Restart the virtual machine, it should not detect any difference. | |||
5. Optional: Delete the original storage volume from the pool with [[virsh vol-delete]]. Note that [[virsh vol-delete]] will also ''delete the content'' of the underlying storage, not just removes the storage volume definition from the pool. | |||
virsh vol-delete test-volume.img main-storage-pool | |||
Latest revision as of 21:43, 30 June 2017
Internal
Overview
There is no virsh command to rename a volume, but it can be achieved via the following sequence of steps:
1. Shutdown all the virtual machines that use the volume:
virsh shutdown test-vm
2. Clone the volume, under a different name.
virsh vol-clone --pool main-storage-pool test-volume.raw test-volume-2.raw
For more details, see virsh vol-clone.
3. Edit the definition of the virtual machines using the volume, and change the name of the logical volume in the definition.
Replace:
...
<disk type='file' device='disk'>
<driver name='qemu' type='raw'/>
<source file='/main-storage-pool/test-volume.raw'/>
<target dev='vdb' bus='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>
</disk>
...
with
...
<disk type='file' device='disk'>
<driver name='qemu' type='raw'/>
<source file='/main-storage-pool/test-volume-2.raw'/>
<target dev='vdb' bus='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>
</disk>
...
4. Restart the virtual machine, it should not detect any difference.
5. Optional: Delete the original storage volume from the pool with virsh vol-delete. Note that virsh vol-delete will also delete the content of the underlying storage, not just removes the storage volume definition from the pool.
virsh vol-delete test-volume.img main-storage-pool