I cannot delete a volume or a volume snapshot

The volume must be in the state Available and have the attachment status Detached. Before you can delete volumes you need to delete any snapshots of these volumes or vice versa. Volumes cannot be deleted as long as any snapshots of the particular volumes exist. The Horizon Web GUI does not provide the possibility to list these dependencies between volumes and snapshots but you could use the following bash script to list the dependencies for your project: get_volume_dependencies.sh

Below you see an example of the output of that script. There are 2 volumes and one Snapshot listed. To be able to delete the snapshot you first have to delete the volume with UUID 1a0ed73b-d15a-4db2-8a84-c96953c183f0.

./get_volume_dependencies.sh VOLUME: 07e56053-082a-411e-be41-747cd7004a56 (Name: )

VOLUME: 1a0ed73b-d15a-4db2-8a84-c96953c183f0 (Name: )

SNAPSHOT: c90c09b1-01e5-4a9d-b2b6-ba9187f5af6c (Name: snapshot for snapsnap) ??? VOLUME: 1a0ed73b-d15a-4db2-8a84-c96953c183f0 (Name: )

Despite cleared dependencies the system may still refuse to delete a volume most often due to an inconsistent state and/or attachment status in the database. An example would be a volume for which openstack volume show VOLUME_UUID shows an attachment to an already deleted instance, or an instance for which **openstack server show SERVER_UUID** does not show said attachment. In that case the state and/or attachment status have to be reset manually which requires admin privileges, so if you have this kind of problem please open a ticket and name the volume.