postgres postgres 1575324616939 Feb 20 13:55 devdb_0.sql
But, the restore has gone over 1.6 TB
# \l+
1639 GB
How is that even possible?
The dump itself doesn't contain index data. It'll contain a line that says 'CREATE INDEX .....' The index is an on-disk entity that requires disk space, it's very common for a dump file and a restored database to very significantly in size.