Public bug reported: Is there anything changed in xubuntu 16.04 LTS that causes tcplay device mapper to hang ?
The following command sequence works fine in xubuntu 14.04 but in 16.04 it hangs at the device mapper stage (5 below) when the valid passphrase is entered. The passphrase I use here is ‘testpw’. I know it has accepted the correct passphrase because it gives a message if I enter an invalid passphrase. This is a fresh install using the xubuntu-16.04.1-desktop-i386.iso on the same 32-bit processor laptop as the 14.04 system (multi-boot). I prefer using tcplay because of the container portability. There are no dmesg messages during the process on 16.04. This is the command sequence: 1) fallocate -l 20M foo.tc 2) sudo losetup -f (response is /dev/loop0) 3) sudo losetup /dev/loop0 foo.tc 4) sudo tcplay -c -d /dev/loop0 -a whirlpool -b AES-256-XTS (response is Passphrase: Repeat passphrase: Summary of actions: - Completely erase *EVERYTHING* on /dev/loop0 - Create volume on /dev/loop0 Are you sure you want to proceed? (y/n) y Securely erasing the volume... This process may take some time depending on the size of the volume Creating volume headers... Depending on your system, this process may take a few minutes as it uses true random data which might take a while to refill and after about 10 minutes Writing volume headers to disk... All done! ) 5) sudo tcplay -m foo.tc -d /dev/loop0 (response is Passphrase: and it then hangs – I have given it up to one hour. ) On xubuntu 14.04 step (5) takes less than one second, and I can then do the following 6) sudo mkfs.ext4 /dev/mapper/foo.tc 7) sudo mount /dev/mapper/foo.tc /mnt/FOO_DRIVE/ 8) df -h which shows the normal stuff plus /dev/mapper/foo.tc 19M 170K 17M 1% /mnt/FOO_DRIVE On xubuntu 16.04, after killing step 5, the would be step 6 gets the message ‘The file /dev/mapper/foo.tc does not exist and no size was specified.’ The above was the bug experience on a 32-bit laptop. On a test 64-bit base unit, I was able to show that the bug also applies to 16.04 LTS 64-bit versions of xubuntu and ubuntu ** Affects: ubuntu Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1625822 Title: tcplay hangs at the device mapper stage. This happens in 16.04 LTS version of xubuntu (32 bit and 64 bit) and ubuntu (64bit). This makes tcplay containers not accessible. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1625822/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs