Re: [Libguestfs] Issue with virt-builder on Ubuntu 14.04

On Mon, Jun 29, 2015 at 08:49:26PM -0600, Shawn Greig wrote: [...] Thanks for the detailed bug report. The issue is indeed something strange with your host or KVM or your host kernel (3.13.0-55-generic). As you can see from the end of the messages: > [ 0.371018] EXT4-fs (sdb): mounting ext2 file system using the ext4 subsystem > [ 0.393840] EXT4-fs (sdb): mounted filesystem without journal. Opts: > supermin: chroot > Starting /init script ... > ln: failed to create symbolic link '/etc/mtab': File exists > /init: 55: /init: systemd-tmpfiles: not found > [ 1.687079] systemd-udevd[91]: starting version 204 > [ 1.808148] random: nonblocking pool is initialized > [ 1.886029] ACPI Exception: AE_BAD_PARAMETER, Thread 487102464 could not acquire Mutex [0x1] (20131115/utmutex-285) > [ 1.886591] piix4_smbus 0000:00:01.3: SMBus Host Controller at 0xb100, revision 0 > /init: 79: /init: cannot create /sys/block/{h,s,ub,v}d*/queue/scheduler: Directory nonexistent > /sbin/dhclient-script: line 31: /etc/fstab: No such file or directory > [ 2.935872] input: ImExPS/2 Generic Explorer Mouse as /devices/platform/i8042/serio1/input/input3 ... the kernel boots quite far, and then hangs in the init script (see appliance/init). Some things you can try: - Force qemu to use TCG (no KVM) mode to see if that makes a difference: export LIBGUESTFS_BACKEND_SETTINGS=force_tcg - Use 'libguestfs-test-tool' for testing to see if that makes a difference. In the build directory, run: make quickcheck - Try a different appliance kernel by setting these variables, but choose different kernel versions by looking in your /boot directory first: export SUPERMIN_KERNEL_VERSION=3.13.0-55-generic export SUPERMIN_KERNEL=/boot/vmlinuz-$SUPERMIN_KERNEL_VERSION export SUPERMIN_MODULES=/lib/modules/$SUPERMIN_KERNEL_VERSION rm -rf tmp/.guestfs-* make quickcheck - Add debugging 'set -x' to the top of appliance/init in the source tree to see if it fails while running a specific command. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://people.redhat.com/~rjones/virt-top