Similar poor experience:
running Duplicati - 2.0.2.12_canary_2017-10-20
MacOS - El Capitan
Duplicati stalls showing “Verifying backend data …” in status bar.
Live profiling shows last entry is:
Nov 27, 2017 11:46 PM: Starting - ExecuteReader: SELECT "A"."Hash", "C"."Hash" FROM (SELECT "BlocklistHash"."BlocksetID", "Block"."Hash", * FROM "BlocklistHash","Block" WHERE "BlocklistHash"."Hash" = "Block"."Hash" AND "Block"."VolumeID" = ?) A, "BlocksetEntry" B, "Block" C WHERE "B"."BlocksetID" = "A"."BlocksetID" AND "B"."Index" >= ("A"."Index" * 3200) AND "B"."Index" < (("A"."Index" + 1) * 3200) AND "C"."ID" = "B"."BlockID" ORDER BY "A"."BlocksetID", "B"."Index"
mono-sgen64 is running at 99% CPU, but nothing is happening…