The tests started yesterday can be described like this: 1. I tested the Ubuntu 16.04.1 LTS desktop amd64 iso file.
2. To be completely sure, I created two USB boot drives with the Ubuntu Startup Disk Creator (not that it would clone differently from mkusb, but anyway, just in case. 3. I upgraded casper to the new version in xenial-proposed, 1.376.2. 4. I ran both tests in UEFI mode, a live-only session in an Intel NUC https://www-ssl.intel.com/content/www/us/en/nuc/nuc-kit-nuc6i3syh.html and a persistent live session in a Lenovo X131e https://shop.lenovo.com/ISS_Static/ww/wci/products/us/laptop/thinkpad/x-series /x131e-intel/X131e-Datasheet-Intel.pdf The persistence was using a casper-rw partition in another drive (because the cloned drive has the read-only file system ISO 9660. I checked with 'df -h' how much space was used before and after the test period. 5. Result Live-only: ubuntu@ubuntu:~$ date;df -h . Wed Oct 26 17:46:20 UTC 2016 Filesystem Size Used Avail Use% Mounted on /cow 1.9G 48M 1.9G 3% / ubuntu@ubuntu:~$ echo 'this is live-only' this is live-only ubuntu@ubuntu:~$ echo 'this is live-only' this is live-only ubuntu@ubuntu:~$ date;df -h . Wed Oct 26 19:38:35 UTC 2016 Filesystem Size Used Avail Use% Mounted on /cow 1.9G 48M 1.9G 3% / ubuntu@ubuntu:~$ date;df -h . Thu Oct 27 16:30:19 UTC 2016 Filesystem Size Used Avail Use% Mounted on /cow 1.9G 1.1G 886M 54% / ubuntu@ubuntu:~$ df -h Filesystem Size Used Avail Use% Mounted on udev 1.9G 0 1.9G 0% /dev tmpfs 384M 6.4M 378M 2% /run /dev/sdb 1.5G 1.5G 0 100% /cdrom /dev/loop0 1.4G 1.4G 0 100% /rofs /cow 1.9G 1.1G 886M 54% / tmpfs 1.9G 172K 1.9G 1% /dev/shm tmpfs 5.0M 4.0K 5.0M 1% /run/lock tmpfs 1.9G 0 1.9G 0% /sys/fs/cgroup tmpfs 1.9G 4.0K 1.9G 1% /tmp tmpfs 384M 124K 384M 1% /run/user/999 /dev/mmcblk0p2 6.0M 0 6.0M 0% /media/ubuntu/Firmware Persistent live: ubuntu@ubuntu:~$ date;df -h . Wed Oct 26 18:39:29 UTC 2016 Filesystem Size Used Avail Use% Mounted on /cow 22G 92M 21G 1% / ubuntu@ubuntu:~$ date;df -h . Thu Oct 27 16:29:50 UTC 2016 Filesystem Size Used Avail Use% Mounted on /cow 22G 1.1G 20G 6% / ubuntu@ubuntu:~$ df -h Filesystem Size Used Avail Use% Mounted on udev 1.9G 0 1.9G 0% /dev tmpfs 380M 6.2M 374M 2% /run /dev/sda 1.5G 1.5G 0 100% /cdrom /dev/loop0 1.4G 1.4G 0 100% /rofs /cow 22G 1.1G 20G 6% / tmpfs 1.9G 228K 1.9G 1% /dev/shm tmpfs 5.0M 4.0K 5.0M 1% /run/lock tmpfs 1.9G 0 1.9G 0% /sys/fs/cgroup tmpfs 1.9G 4.0K 1.9G 1% /tmp tmpfs 380M 92K 380M 1% /run/user/999 /dev/mmcblk0p5 22G 1.1G 20G 6% /media/ubuntu/casper-rw /dev/mmcblk0p3 6.4G 2.1G 4.0G 34% /media/ubuntu/root 6. Conclusion In both cases, a big unattended upgrade was performed. The used space increased from 48M to 1.1G in the live-only case and from 92M to 1.1G in the persistent live case. I attach the terminal dialogues in both cases for more details (in this comment and the next one). ** Attachment added: "live-only-terminal-dialogue.txt" https://bugs.launchpad.net/ubuntu/+source/casper/+bug/1619188/+attachment/4768325/+files/live-only-terminal-dialogue.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1619188 Title: Unattended upgrades can break persistent live media To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/casper/+bug/1619188/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
