On Wed, Jul 30, 2014 at 03:58:43PM -0700, Zetan Drableg wrote: > [00183ms] /usr/libexec/qemu-kvm \ > -global virtio-blk-pci.scsi=off \ > -nodefconfig \ > -nodefaults \ > -nographic \ > -machine accel=kvm:tcg \ > -cpu host,+kvmclock \ > -m 500 \ > -no-reboot \ > -kernel /var/tmp/.guestfs-0/kernel.47903 \ > -initrd /var/tmp/.guestfs-0/initrd.47903 \ > -device virtio-scsi-pci,id=scsi \ > -drive file=/tmp/libguestfs-test-tool-sda-Iakpwe,cache=none,format > =raw,id=hd0,if=none \ > -device scsi-hd,drive=hd0 \ > -drive file=/var/tmp/.guestfs-0/root.47903,snapshot=on,id=appliance, > if=none,cache=unsafe \ > -device scsi-hd,drive=appliance \ > -device virtio-serial \ > -serial stdio \ > -device sga \ > -chardev socket,path=/tmp/libguestfspx9994/guestfsd.sock,id=channel0 > \ > -device virtserialport,chardev=channel0,name=org.libguestfs.channel.0 > \ > -append 'panic=1 console=ttyS0 udevtimeout=600 no_timer_check > acpi=off printk.time=1 cgroup_disable=memory root=/dev/sdb selinux=0 > guestfs_verbose=1 TERM=xterm edd=off' > \x1b[1;256r\x1b[256;256H\x1b[6n > Google, Inc. > Serial Graphics Adapter 10/14/11 > SGABIOS $Id: sgabios.S 8 2010-04-22 00:03:40Z nlaredo $ (mockbuild@ > ca-build44.us.oracle.com) Fri Oct 14 20:04:36 UTC 2011 > Term: 80x24 > 4 0 > SeaBIOS (version seabios-0.6.1.2-28.el6) > \x1b[2J > > At this point it hangs forever. These hangs can be tricky to diagnose. There are a couple of things you can do however: (1) strace qemu to find out what it is doing, or: (2) [harder, but much more informative] gdb into the guest to find out where the guest hangs, or: (3) Take the command line above, and cut it down to try to isolate the problematic options. I would concentrate on the following options as being most likely to cause trouble: -cpu -machine -kernel -device sga (remove it) For (1) and (2) you can use a qemu wrapper to modify the qemu command that the test tool runs. See also: http://libguestfs.org/guestfs.3.html#qemu-wrappers http://rwmj.wordpress.com/2011/10/12/tip-debugging-the-early-boot-process-with-qemu-and-gdb/#content Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-builder quickly builds VMs from scratch http://libguestfs.org/virt-builder.1.html -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
