both mountTests and parted_utils_tests failed.
the test execute 'mount' and 'umount' command. after the umount command, the loop device can not be freed
here is the log: -------------------- >> begin captured logging << -------------------- Storage.Misc.excCmd: DEBUG: 'dd if=/dev/zero of=/tmp/tmpH2KSCr bs=100M count=1' (cwd None) Storage.Misc.excCmd: DEBUG: SUCCESS: <err> = '1+0 records in\n1+0 records out\n104857600 bytes (105 MB) copied, 0.266024 s, 39 4 MB/s\n'; <rc> = 0 Storage.Misc.excCmd: DEBUG: 'losetup -f --show /tmp/tmpH2KSCr' (cwd None) Storage.Misc.excCmd: DEBUG: FAILED: <err> = 'losetup: could not find any free loop device\n'; <rc> = 255 --------------------- >> end captured logging << ---------------------