Red Hat Bugzilla – Bug 561528
libguestfs hangs on F-12: chardev: opening backend "stdio" failed / qemu: could not open serial device 'stdio': Invalid argument
Last modified: 2013-09-02 02:43:39 EDT
= Description = While executing the provided python test script [1] noted from Richards blog post [2], it seems that the command hangs. I've been seeing similar issues while attempting virt installs on this F-12 system lately but haven't managed to pinpoint the trouble. So far, this is the only reproduce-able test case I've found. [1] https://fedorahosted.org/pipermail/autoqa-devel/attachments/20100201/0d29652b/attachment.py [2] http://rwmj.wordpress.com/2010/02/01/libguestfs-python-example/ = Software installed = This is a F-12 system (plus updates) * gpxe-roms-qemu-0.9.7-6.fc12.noarch * libguestfs-1.0.75-1.fc12.x86_64 * libvirt-0.7.5-3.fc12.x86_64 * python-libguestfs-1.0.75-1.fc12.x86_64 * qemu-common-0.12.1.2-3.fc12.x86_64 * qemu-img-0.12.1.2-3.fc12.x86_64 * qemu-kvm-0.12.1.2-3.fc12.x86_64 * qemu-system-x86-0.12.1.2-3.fc12.x86_64 = Steps to reproduce = 1) Run libguestfs-test-tool = Actual Results = # libguestfs-test-tool ===== Test starts here ===== LIBGUESTFS_DEBUG=1 new guestfs handle 0xc8d120 library version: 1.0.75 guestfs_get_append: (null) guestfs_get_autosync: 0 guestfs_get_memsize: 500 guestfs_get_path: /usr/lib64/guestfs guestfs_get_qemu: /usr/bin/qemu-kvm guestfs_get_verbose: 1 Launching appliance, timeout set to 120 seconds. looking for supermin appliance in /usr/lib64/guestfs null_vmchannel_sock = 58845 accept_from_daemon: 0xc8d120 g->state = 0 /usr/bin/qemu-kvm \ -drive file=/tmp/libguestfs-test-tool-sda-ojUUe4,cache=off,if=ide \ -drive file=/tmp/libguestfs-test-tool-iso-arbZsP,cache=off,if=ide \ -m 500 \ -no-reboot \ -nographic \ -serial stdio \ -no-hpet \ -net user,vlan=0,net=10.0.2.0/8 \ -net nic,model=virtio,vlan=0 \ -kernel /tmp/libguestfsO3m10i/kernel \ -initrd /tmp/libguestfsO3m10i/initrd \ -append 'panic=1 console=ttyS0 udevtimeout=300 noapic acpi=off cgroup_disable=memory selinux=0 guestfs_vmchannel=tcp:10.0.2.2:58845 guestfs_verbose=1 ' chardev: opening backend "stdio" failed qemu: could not open serial device 'stdio': Invalid argument Alarm clock
Updated summary to reflect the error. We fixed this upstream a while back: http://git.annexia.org/?p=libguestfs.git;a=commit;h=b4a4db522fed542f48aa60717e65061c5e83c919 but the build which includes that fix hasn't yet made it to Fedora 12 updates. Can you try installing the following package from F12 updates-testing which should fix it: https://admin.fedoraproject.org/updates/F12/FEDORA-2010-1176?_csrf_token=c38531a96656ca9bd2e24f9a78e1c197154039e5
Link without the CSRF token: https://admin.fedoraproject.org/updates/F12/FEDORA-2010-1176
Thanks! I've added positive karma to the bodhi update request. The updates-testing packages recommended resolve the issue. * libguestfs-1.0.81-1.fc12.4.x86_64 * python-libguestfs-1.0.81-1.fc12.4.x86_64 # libguestfs-test-tool ... ===== TEST FINISHED OK ===== closing guestfs handle 0x116f120 (state 2) sending SIGTERM to process 26466
Thanks for testing it. I'll try to get that pushed to stable asap.
Confirmed that this fixes the issue on a F12 + virt-preview machine.