Hi, B.M. wrote that dmesg reports: > UDF-fs: warning (device dm-10): udf_load_vrs: No VRS found
That's a very early stage of UDF recognition. Given that you were able to copy files into that UDF image by help of the Linux kernel driver, i deem it improbable that the properly decrypted UDF format would be in such a bad shape. So it looks like decryption uses a wrong key when you mount it again. Consider to exercise the procedure without encryption to make sure that the resulting $IMGFILE are recognizable UDF and contain the files which you expect. Just to be sure. > my last backups consist of two discs each, and I cannot > mount the first one but I can mount the second one for each of them Hard to explain. I see a theoretical race condition in the sequence of IMGLOOP=`losetup -f` and losetup $IMGLOOP $IMGFILE but cannot make up a situation where this would lead to silent failure to encrypt. What does file "$IMGFILE" say ? Consider to use --verbose and/or --debug with the two runs of cryptsetup luksOpen. Maybe you see a reason why they are at odds. Have a nice day :) Thomas
