Public bug reported: the system boots fine when using a casper-rw FILE but drops to a busybox when using a partition
the short log would be: ___________________________________________________ Begin: Running /scripts/casper-premount ... done. done. umount: can't umount /cdrom: Device or resource busy Warning: Unable to find the persistent home medium umount: can't umount /cdrom: Device or resource busy Warning: Impossible to include the casper-sn Snapshot umount: can't umount /cdrom: Device or resource busy Warning: Impossible to include the home-sn Snapshot done. ___________________________________________________ removing the "persistence" keyword from the syslinux.cfg works and the live usb drive boots just fine. using a persistence file instead of the partition and the usb drive boots just fine. i found older bug reports concerning the same problem but the fix proposed in 2010 is already integrated into the script "casper". so i started the flashdrive with the casper debug= option and i see the following (after probing several other devices it finally finds the right device and partition (sdb3) ___________________________________________________ + cow_backing_mp=/cdrom + [ -e /cdrom/casper-rw ] + umount /cdrom + sys2dev /sys/block/sdb/sdb3 + sysdev=/block/sdb/sdb3 + udevadm info -q name -p /block/sdb/sdb3 + echo /dev/sdb3 + devname=/dev/sdb3 + /sbin/blkid -s LABEL -o value /dev/sdb3 + [ casper-rw = casper-rw ] + echo /dev/sdb3 + return + cowprobe=/dev/sdb3 + [ -b /dev/sdb3 ] + cowdevice=/dev/sdb3 + get_fstype /dev/sdb3 + local FSTYPE + local FSSIZE + fstype + eval FSTYPE=ext4 FSSIZE=8458862592 + FSTYPE=ext4 FSSIZE=8458862592 + [ ext4 != unknown ] + echo ext4 + return 0 + cow_fstype=ext4 + cow_mountopt=rw,noatime + mount -t ext4 -o rw,noatime /dev/sdb3 /cow + [ ! -d /cow/upper ] + mkdir -p /cow/upper + continue + continue + mkdir -p /cow/work + [ -f /cow/format ] + [ DEFAULT = DEFAULT ] + modprobe -q -b overlay + grep -q ^overlay$ + cut -f2 /proc/filesystems + UNIONFS=overlay + break ___________________________________________________ this looks fine to me.. it looks like it recognizes everything .. it's ext4 .. label casper-rw.. it's mounting it... a little bit further down in the loooong log file it states the following: ______________________________________________ + cow_backing_mp=/home-rw-backing + [ -e /home-rw-backing/home-rw ] + umount /home-rw-backing + sys2dev /sys/block/sdb/sdb3 + sysdev=/block/sdb/sdb3 + udevadm info -q name -p /block/sdb/sdb3 + echo /dev/sdb3 + devname=/dev/sdb3 + /sbin/blkid -s LABEL -o value /dev/sdb3 + [ casper-rw = home-rw ] + get_fstype /dev/sdb3 + local FSTYPE + local FSSIZE + fstype + eval FSTYPE=ext4 FSSIZE=8458862592 + FSTYPE=ext4 FSSIZE=8458862592 + [ ext4 != unknown ] + echo ext4 + return 0 + [ ext4 = vfat ] + homecow= + [ -b ] + [ n != y ] + log_warning_msg Unable to find the persistent home medium + _log_msg Warning: Unable to find the persistent home medium\n + [ n = y ] + printf Warning: Unable to find the persistent home medium\n Warning: Unable to find the persistent home medium __________________________________________________________ a warning about the home medium is shown in both cases (file and partition) but the persistence file works never the less.. my system: kubuntu linux 15.10 beta1 uname -a Linux wald 4.1.0-3-generic #3-Ubuntu SMP Tue Jul 28 12:25:10 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux ** Affects: casper (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/1489855 Title: kubuntu 15.10 beta1 live usb drops to busybox with persistence PARTITION To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/casper/+bug/1489855/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs