Hello I create encrypted backups on blu-ray discs for some years now with a bash script, but now I encountered a problem mounting some of these discs (but not all of them - in fact, 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 - seems strange...). It's not date-related (and they are not too old).
In detail, I use the following commands: IMGFILE=/home/TMP_BKP/backup.img IMGSIZE=24064000K IMGLOOP=`losetup -f` touch $IMGFILE truncate -s $IMGSIZE $IMGFILE losetup $IMGLOOP $IMGFILE cryptsetup luksFormat --cipher aes-xts-plain64 $IMGLOOP cryptsetup luksOpen $IMGLOOP BDbackup mkudffs -b 2048 --label $1 /dev/mapper/BDbackup mount -t udf /dev/mapper/BDbackup /mnt/BDbackup ... then I create my compressed backup files ... umount /mnt/BDbackup cryptsetup luksClose /dev/mapper/BDbackup losetup -d $IMGLOOP growisofs -dvd-compat -Z /dev/dvd=$IMGFILE; eject In order to mount the disc, I use: cryptsetup luksOpen -r /dev/dvd BDbackup mount -t udf /dev/mapper/BDbackup /mnt/BDbackup Unfortunately, this fails now for some of my discs and also for the last image file I created (not deleted yet...): mount: /mnt/BDbackup: wrong fs type, bad option, bad superblock on /dev/ mapper/BDbackup, missing codepage or helper program, or other error. And dmesg shows: UDF-fs: warning (device dm-10): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device dm-10): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed Any ideas what may happen here? Thank you. Best, Bernd
