Master -- pr52033 -- Volume infos fix #55165
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This was referenced Oct 30, 2019
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Also master port of PR #51691 |
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Also master-port of PR #52414 |
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@dwoz pinging you on this PR since I merged a few other related ones that you were looking at. |
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Expose informations of the libvirt storage volumes, either for one or all the volumes. Among the provided data, this function exposes the names of the virtual machines using the volumes of file type.
All users to remove a libvirt storage volume.
It may happen on pools that have not refresh for a long time that the volume list is not matching reality. Then when calling the info() or XMLDesc() functions libvirt errors out. virt.volume_info() now handles this case.
Since the pool and volume parameters can be None, make them optional and default to None.
Even though the volume_infos handles the libvirt exception when a volume is missing, libvirt was still outputting the error message in the log. Since this can add noise to the log only record the libvirt error message in debug level.
libvirt raises an error when getting the list of volumes of a pool that is not active. Rule out those pools from virt.volume_infos since we still need to give infos on the other pools' volumes.
_get_domain returns a domain object when only one VM has been found. virt.volume_infos needs to take care of it or it will fail to list the volumes informations if the host in such a case.
virt._get_domain() throws an CommandExecutionError if there is no virtual machine. In volume_infos() this is not an error at all since the VMs list is only used to find out which VM uses each volume.
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dwoz
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What does this PR do?
Master port of PR #52033. Needs PR #55163 to be merged in before.
Tests written?
Yes
Commits signed with GPG?
Yes