mariadb incremental backup not working

[Jose Arthur Benetasso Villanova]

Version:
openstack-trove-guestagent-6.0.1-0.20161130143308.6907ba8.el7.centos.noarch
python2-troveclient-2.5.0-1.el7.noarch
openstack-trove-common-6.0.1-0.20161130143308.6907ba8.el7.centos.noarch
python-trove-6.0.1-0.20161130143308.6907ba8.el7.centos.noarch

Action:
Create a backup incremental from a full backup

Expect output:
backup incremental

Output:
backup full

Reproducible:
Always

Steps to reproduce:
Configure a MariaDB Guest.
Create a full backup
Create an incremental backup based on full backup
Check backup size

[Jose Arthur Benetasso Villanova (jose-arthur)]

Workaround:
In guest:
/etc/trove/conf.d/trove-guestagent.conf

[mariadb]
backup_namespace = trove.guestagent.strategies.backup.mysql_impl
backup_strategy = InnoBackupExIncremental

restore_namespace = trove.guestagent.strategies.restore.mysql_impl
restore_strategy = InnoBackupExIncremental

[Amrith Kumar (amrith)]

This appears to be a configuration issue.

[Jose Arthur Benetasso Villanova (jose-arthur)]

Although you can adapt the configuration since MariaDB and MySQL are similar databases, the default implementation (MariaDBInnoBackupExIncremental) doesnt inherits the incremental implementation from InnoBackupExIncremental as attached diagram.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/458609