Hi, branch pragmatic-multiextent-2020 has now passed all my experiments which master would pass. Insofar i propose to merge it.
----------------------------------------------------------------------- There is a substantial problem with the size assessment of DVD and BD media, though. A fully fomatted DVD+RW of 2,295,104 blocks gets assessed as having only 431,849 blocks (and MSF being 95:59:74). The macro check_lsn in lib/driver/read.c then prevents reading of any block beyond that wrong small size. Since large.iso is a multi-session ISO, its root directory lies above the wrong size and src/cd-info reports no ISO directory tree but also no error message. (The lack of error message is caused by check_lsn only issuing a cdio_info message which src/cd-info does not show. src/cd-info itself tries to issue an error message on failure of iso9660_fs_readdir() by a call named report(). It does not show up.) I assume that the size misperception comes from use of MSF oriented inquiries or conversions which are inapproriate with block counts in the millions. I will try to find out where it goes wrong with gnu_linux.c. Depending on the results, this issue might need fixing in each of the operating system drivers. Have a nice day :) Thomas
