The icestormdb utility is a command-line tool for importing and exporting IceStorm databases.
You can export an IceStorm database while IceStorm is actively using this database. Write operations to the IceStorm database will block while icestormdb is reading the database.
If you want to back-up the IceStorm database while IceStorm is running, we recommend using the mdb_copy tool.
The --mapsize option allows you to set the map size of the new LMDB database. See service.LMDB.MapSize for additional information.
Besides importing files that it creates itself, icestormdb can also import the files exported by the Ice 3.5 (icestormdb35) and Ice 3.6 versions of this utility.