borgmatic 2.2.0 keeps Borg deduplicating the tarballs you back up
borgmatic 2.2.0 adds a beta tarballs data source that streams a tar file into Borg as individual files, so VM exports deduplicate instead of sitting in the archive as one packed blob. The release also fixes a hang that hit database dumps with heavy output, file-descriptor exhaustion when dumping hundreds of databases, and a regression that cost ZFS, LVM and Btrfs hooks their Borg cache hits.