cc82349363
Makes those files conformant with current linting rules and avoids linting errors when we need to toch them again. Previous doing "pre-commit run -a" uncovered these errors, now is no longer reporting any other errors. Change-Id: Ie4cf229c8f11c2b55b323eac23c89483b26d3781
2.0 KiB
snapshot-libvirt
An Ansible role for snapshotting a libvirt environment using external snapshots with backing files.
The role will shutdown all of the VMs specified in the overcloud_nodes list, then proceed with either creating or restoring a previous snapshot depending on the settings for snapshot_create and snapshot_restore. The default is to do nothing since both of these operations are potentially destructive.
When run with snapshot_create=true, the role will check if there is already a backing file. If one exists, it will commit all new changes to that backing file. If there is not already a backing file, the role will create one, and make an empty snapshot pointing to it.
When run with snapshot_restore=true, the role will delete the current snapshot and create an empty snapshot pointing to the backing file.
Limitations
- This role does not currently support any "management" of snapshots, i.e. there is only one maintained.
- The role uses qemu-img directly to create the snapshots, this means
the snapshots will not show up with commands like
virsh-snapshot - The role does not currently implement any method to remove the backing files. This means when starting over from scratch, these *.bak files will need to be manually deleted (if reusing the same libvirt_volume_path).
Example Usage
---
- name: Create a snapshot (or update a snapshot)
hosts: virthost
gather_facts: true
vars:
- snapshot_create: true
- libvirt_volume_path: /opt/vm_images
- libvirt_uri: qemu:///system
- overcloud_nodes:
- name: subnode-0
- name: subnode-1
roles:
- snapshot-libvirt
become: true
- name: Restore a snapshot
hosts: virthost
gather_facts: true
vars:
- snapshot_restore: true
- libvirt_volume_path: /opt/vm_images
- libvirt_uri: qemu:///system
- overcloud_nodes:
- name: subnode-0
- name: subnode-1
roles:
- snapshot-libvirt
become: true
License
Apache