Upgrade Trilio

Starting Trilio for Openstack 4.0 does Trilio for Openstack allow in-place upgrades.

The following versions can be upgraded to each other:

Old	New
4.0 GA (4.0.92)	4.0 SP1 (4.0.115)
4.0 GA (4.0.92)	4.1 latest hotfix
4.0 GA (4.0.92)	4.2 GA (4.2.64)
4.1 GA (4.1.94)	4.1 latest Hotfix
4.1 Hotfix	4.1 latest Hotfix
4.1 GA (4.1.94)	4.2 GA (4.2.64)
4.1 Hotfix	4.2 GA (4.2.64)
4.2 GA (4.2.64)	4.3.0
4.2 Hotfix	4.3.0

The upgrade process contains upgrading the Trilio appliance and the Openstack components and is dependent on the underlying operating system.

The Upgrade of Trilio for Canonical Openstack is managed through the charms.

Enable mount-bind for NFS

In T4O 4.2 and later releases, calculation of the mount point has been changed. It is necessary to set up the mount-bind to make T4O 4.1 or older backups available for T4O 4.2 and T4O 4.2 onwards releases. Please follow this documentation to set up the mount bind for Canonical OpenStack.