wmcs-backups has a config file where you can specify a list of regexes to exclude some volumes from being backed up:
exclude_volumes:
cloudinfra-nfs:
- scratch
admin-monitoring:
- ".*"
[...]This is not working correctly because the code in wmcs-backup.py is matching the regex against the image ID (e.g. d1478efd-9fa6-4293-8389-e72459b794c0) instead of the image name (e.g. scratch)