This commit adds `RegenerateVolumeGroupJournal` to Manager
interface. RegenerateVolumeGroupJournal regenerate the omap
data for the volume group.
This performs the following operations:
- extracts clusterID and Mons from the cluster mapping
- Retrieves pool and journalPool parameters from the VolumeGroupReplicationClass
- Reserves omap data
- Add volumeIDs mapping to the reserved volume group omap object
- Generate new volume group handle
Returns the generated volume group handler.
Signed-off-by: Praveen M <m.praveen@ibm.com>
This commit consolidates flatten logic checks for cloneDepth
and snapshotLimit in PrepareVolumeForSnapshot. This allows
the function to be called for both CreateSnapshot and
CreateVolumeGroupSnapshot.
Clone Depth check and flattening of grand parent image
now occurs before creation of snapshot starts.
This aligns better with how PVC-PVC clone and
PVC-restore process occurs currently.
Flattening the grandparent image once prevents
flattening of every newly created snapshot.
Snapshot in above para refers to k8s VolumeSnapshot
(which is backed by a rbd image).
Signed-off-by: Rakshith R <rar@redhat.com>
Without the SnapshotGroupID in the Snapshot object, Kubernetes CSI does
not know that the Snapshot belongs to a group. In that case, it allows
the deletion of the Snapshot, which should be denied.
Signed-off-by: Niels de Vos <ndevos@ibm.com>
The Group Controller Server may need to fetch a VolumeGroupSnapshot that
was statically provisioned. In that case, only the name of the
VolumeGroupSnapshot is known and should be resolved to an object.
Signed-off-by: Niels de Vos <ndevos@ibm.com>
The GetVolumeGroupSnapshotByID function makes it possible to get a
VolumeGroupSnapshot object from the Manager by passing a request-id.
This makes it simple for the Group Controller Server to check if a
VolumeGroupSnapshot already exists, so it is not needed to try and
re-create an existing one.
Signed-off-by: Niels de Vos <ndevos@ibm.com>
Implement the CreateVolumeGroupSnapshot for the rbd.Manager. A Group
Controller Server can use the rbd.Manager to create VolumeGroupSnapshots
in an easy an idempotent way.
Signed-off-by: Niels de Vos <ndevos@ibm.com>
A (CSI) VolumeGroupSnapshot object contains references to Snapshot IDs
(or CSI Snapshot handles). In order to work with a VolumeGroupSnapshot
struct, the Snapshot IDs need to be resolved into rbdSnapshot structs.
Signed-off-by: Niels de Vos <ndevos@ibm.com>
The VolumeGroupSnapshot type will be used by the rbd.Manager to create,
inspect and delete VolumeGroupSnapshos.
Signed-off-by: Niels de Vos <ndevos@ibm.com>
When the rbd.Manager creates a VolumeGroupSnapshot, each RBD-snapshot
that is created as part of the RBD-group needs to be cloned into its own
RBD-image that will be used as a CSI Snapshot.
The VolumeGroup.CreateSnapshots() creates the RBD-group snapshot and
returns a list of the Snapshot structs.
Signed-off-by: Niels de Vos <ndevos@ibm.com>
The NewSnapshotByID() function makes it possible to clone a new Snapshot
from an existing RBD-image and the ID of an RBD-snapshot on that image.
This will be used by the VolumeGroupSnapshot feature, where the ID of an
RBD-snapshot is obtained for the RBD-snapshot on the RBD-images.
Signed-off-by: Niels de Vos <ndevos@ibm.com>
The rbdSnapshot/rbdImage object implements all functions for a useful
Snapshot interface. The rbd.Manager will be able to use this for
providing VolumeGroupSnapshot support.
Signed-off-by: Niels de Vos <ndevos@ibm.com>
There is no need for the `Manager.DeleteVolumeGroup()` function as
`VolumeGroup.Delete()` should cover everything too.
By moving the `.Delete()` functionality of removing the group from the
journal to the shared `commonVolumeGroup` type, a volume group snaphot
can use it as well.
Signed-off-by: Niels de Vos <ndevos@ibm.com>
Add extra error checking to make sure trying to create an existing
volume group does not result in a failure. The same counts for deleting
a non-existing volume group, and adding/removing volumes to/from the
volume group.
Signed-off-by: Niels de Vos <ndevos@ibm.com>
A VolumeGroup CSI-Addons object contains a list of CSI Volumes. A
ToCSI() function makes creating such a list much simpler.
Signed-off-by: Niels de Vos <ndevos@ibm.com>
The rbd_types package was initially created with references to the rbd
package. And the rbd package references the rbd_types package. Having
rbd/types was not possible due to recursive imports. After cleaning up
the rbd_types package, it can be renamed to rbd/types.
Signed-off-by: Niels de Vos <ndevos@ibm.com>
