I have a Nexus 3.29 instance with only one blob store (named default). A blob compaction was performed successfully. After this, the admin interface shows space used as 1225GB. However, on disk, the blob uses 1.6TB (measured using both “du -bs” and “du -hs”). I also looked up files with “deleted=true” set in the properties file. They only total about 750KB, likely created happened after the compaction finished.
How is the space used number calculated in the UI?