Cinder backups from vm with attached volume

Registered by Eldar Nugaev

Sometimes we would like to perform some actions before backup like flushing data to the disk, pausing services.
It can be done only inside the vm. So we want to have possibility to implement a data consistent cinder backup.

For that we should provide information about attached volume. We should set mode as filesystem or mysql but provide additional volume-id parameter. The freezer assumes that the patch provided for backup is located on cinder volume and makes no checks. Then it implements all actions as it is but instead of doing lvm snapshot it does cinder backup.

Blueprint information

Status:
Complete
Approver:
None
Priority:
Undefined
Drafter:
Eldar Nugaev
Direction:
Needs approval
Assignee:
Eldar Nugaev
Definition:
New
Series goal:
None
Implementation:
Implemented
Milestone target:
None
Started by
Eldar Nugaev
Completed by
Eldar Nugaev

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Gerrit topic: https://review.openstack.org/#q,topic:bp/cinder-backup-mode,n,z

Addressed by: https://review.openstack.org/184506
    Sometimes we would like to perform some actions before backup like flushing data to the disk, pausing services. It can be done only inside the vm. So we want to have possibility to implement a data consistent cinder backup.

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