The wget calls in this script just download as much as they can. I thought I had enough free space on the server, but was wrong. This script filled my VM to 100%, causing a cascade of failures that took hours to fix: most tools assume at least a few bytes for a lock file, for example.

https://github.com/metabrainz/musicbrainz-docker/blob/9fb99ecfde4d821ae2887ceaae51bc736d96fd21/build/musicbrainz-dev/scripts/fetch-dump.sh