Hi all, As title, thanks a lot. My test host configurations: Linux desktop 3.0.0-14-generic #23-Ubuntu SMP Mon Nov 21 20:28:43 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux The test tool output as following: xxx@desktop:~$ sudo libguestfs-test-tool [sudo] password for xxx: ===== Test starts here ===== LIBGUESTFS_DEBUG=1 TMPDIR=(not set) libguestfs: new guestfs handle 0x16cd0f0 library version: 1.15.11 guestfs_get_append: (null) guestfs_get_attach_method: appliance guestfs_get_autosync: 1 guestfs_get_direct: 0 guestfs_get_memsize: 500 guestfs_get_network: 0 guestfs_get_path: /usr/lib/guestfs guestfs_get_pgroup: 0 guestfs_get_qemu: /usr/bin/kvm guestfs_get_recovery_proc: 1 guestfs_get_selinux: 0 guestfs_get_smp: 1 guestfs_get_trace: 0 guestfs_get_verbose: 1 host_cpu: x86_64 Launching appliance, timeout set to 600 seconds. libguestfs: [00000ms] febootstrap-supermin-helper --verbose -f checksum '/usr/lib/guestfs/supermin.d' x86_64 supermin helper [00000ms] whitelist = (not specified), host_cpu = x86_64, kernel = (null), initrd = (null), appliance = (null) supermin helper [00000ms] inputs[0] = /usr/lib/guestfs/supermin.d checking modpath /lib/modules/3.0.0-13-generic is a directory picked vmlinuz-3.0.0-13-generic because modpath /lib/modules/3.0.0-13-generic exists checking modpath /lib/modules/3.0.0-14-generic is a directory picked vmlinuz-3.0.0-14-generic because modpath /lib/modules/3.0.0-14-generic exists supermin helper [00000ms] finished creating kernel supermin helper [00000ms] visiting /usr/lib/guestfs/supermin.d supermin helper [00000ms] visiting /usr/lib/guestfs/supermin.d/base.img supermin helper [00001ms] visiting /usr/lib/guestfs/supermin.d/daemon.img supermin helper [00001ms] visiting /usr/lib/guestfs/supermin.d/hostfiles supermin helper [00031ms] visiting /usr/lib/guestfs/supermin.d/init.img supermin helper [00196ms] finished creating appliance libguestfs: [00201ms] begin building supermin appliance libguestfs: [00203ms] run febootstrap-supermin-helper libguestfs: [00205ms] febootstrap-supermin-helper --verbose -f ext2 /usr/lib/guestfs/supermin.d x86_64 /var/tmp/guestfs.jgetV0/kernel /var/tmp/guestfs.jgetV0/initrd /var/tmp/guestfs.jgetV0/root supermin helper [00000ms] whitelist = (not specified), host_cpu = x86_64, kernel = /var/tmp/guestfs.jgetV0/kernel, initrd = /var/tmp/guestfs.jgetV0/initrd, appliance = /var/tmp/guestfs.jgetV0/root supermin helper [00000ms] inputs[0] = /usr/lib/guestfs/supermin.d checking modpath /lib/modules/3.0.0-13-generic is a directory picked vmlinuz-3.0.0-13-generic because modpath /lib/modules/3.0.0-13-generic exists checking modpath /lib/modules/3.0.0-14-generic is a directory picked vmlinuz-3.0.0-14-generic because modpath /lib/modules/3.0.0-14-generic exists supermin helper [00000ms] finished creating kernel supermin helper [01816ms] finished mke2fs supermin helper [01816ms] visiting /usr/lib/guestfs/supermin.d supermin helper [01817ms] visiting /usr/lib/guestfs/supermin.d/base.img supermin helper [01923ms] visiting /usr/lib/guestfs/supermin.d/daemon.img supermin helper [01932ms] visiting /usr/lib/guestfs/supermin.d/hostfiles supermin helper [07257ms] visiting /usr/lib/guestfs/supermin.d/init.img supermin helper [17331ms] finished creating appliance libguestfs: [17547ms] finished building supermin appliance libguestfs: [17581ms] begin testing qemu features libguestfs: [17611ms] finished testing qemu features libguestfs: accept_from_daemon: 0x16cd0f0 g->state = 1 [17614ms] /usr/bin/kvm \ -drive file=/tmp/libguestfs-test-tool-sda-6OA3hT,cache=off,format=raw,if=virtio \ -nodefconfig \ -machine accel=kvm:tcg \ -nodefaults \ -nographic \ -m 500 \ -no-reboot \ -no-hpet \ -device virtio-serial \ -serial stdio \ -chardev socket,path=/tmp/libguestfsJF88Lr/guestfsd.sock,id=channel0 \ -device virtserialport,chardev=channel0,name=org.libguestfs.channel.0 \ -kernel /var/tmp/.guestfs-0/kernel.17521 \ -initrd /var/tmp/.guestfs-0/initrd.17521 \ -append 'panic=1 console=ttyS0 udevtimeout=300 no_timer_check acpi=off printk.time=1 cgroup_disable=memory selinux=0 guestfs_verbose=1 TERM=xterm ' \ -drive file=/var/tmp/.guestfs-0/root.17521,snapshot=on,if=virtio,cache=unsafeSupported machines are: pc Standard PC (alias of pc-0.14) pc-0.14 Standard PC (default) pc-0.13 Standard PC pc-0.12 Standard PC pc-0.11 Standard PC, qemu 0.11 pc-0.10 Standard PC, qemu 0.10 isapc ISA-only PC libguestfs: child_cleanup: 0x16cd0f0: child process died libguestfs: error: child process died unexpectedly libguestfs-test-tool: failed to launch appliance libguestfs: closing guestfs handle 0x16cd0f0 (state 0) Zhi Yan, Liu