Release notes appendix for libguestfs 1.20 on Fedora 18
I'm just about to release libguestfs 1.20. This appendix covers issues specific to Fedora 18. Fedora 18 defaults to using the libvirt attach-method, meaning that libvirt is used to create and manage the libguestfs appliance. There are several benefits to this (see the full release notes). You can switch back to the ordinary method (directly running qemu) at any time by doing: export LIBGUESTFS_ATTACH_METHOD=appliance There is a bug in libvirt (or perhaps libnl, or somewhere else) which causes libvirtd to segfault occasionally: https://bugzilla.redhat.com/show_bug.cgi?id=875741 You will need selinux-policy >= 3.11.1-63.fc18 and libvirt >= 0.10.2.1-3.fc18 in order to use SELinux in Enforcing mode giving you the full benefit of sVirt protection. I have tested this and it all works well for me, but please open bugs if you find any problems. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-df lists disk usage of guests without needing to install any software inside the virtual machine. Supports Linux and Windows. http://et.redhat.com/~rjones/virt-df/
On Thu, Dec 13, 2012 at 01:53:24PM +0000, Richard W.M. Jones wrote:
I'm just about to release libguestfs 1.20. This appendix covers issues specific to Fedora 18.
Fedora 18 defaults to using the libvirt attach-method, meaning that libvirt is used to create and manage the libguestfs appliance. There are several benefits to this (see the full release notes). You can switch back to the ordinary method (directly running qemu) at any time by doing: export LIBGUESTFS_ATTACH_METHOD=appliance
There is a bug in libvirt (or perhaps libnl, or somewhere else) which causes libvirtd to segfault occasionally: https://bugzilla.redhat.com/show_bug.cgi?id=875741
This is jus a dup of the other similar BZ you filed https://bugzilla.redhat.com/show_bug.cgi?id=886454 The flaw is netcf, using libnl APIs that are not threadsafe. It is trivially demonstrated by just having 2 threads call netcf_init/netcf_close in parallel Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|
On Thu, Dec 13, 2012 at 01:53:24PM +0000, Richard W.M. Jones wrote:
I'm just about to release libguestfs 1.20. This appendix covers issues specific to Fedora 18.
Fedora 18 defaults to using the libvirt attach-method, meaning that libvirt is used to create and manage the libguestfs appliance. There are several benefits to this (see the full release notes). You can switch back to the ordinary method (directly running qemu) at any time by doing: export LIBGUESTFS_ATTACH_METHOD=appliance
There is a bug in libvirt (or perhaps libnl, or somewhere else) which causes libvirtd to segfault occasionally: https://bugzilla.redhat.com/show_bug.cgi?id=875741
You will need selinux-policy >= 3.11.1-63.fc18 and libvirt >= 0.10.2.1-3.fc18 in order to use SELinux in Enforcing mode giving you the full benefit of sVirt protection. I have tested this and it all works well for me, but please open bugs if you find any problems.
[This just in ...] https://bugzilla.redhat.com/show_bug.cgi?id=886915 If you are using Xen as your primary hypervisor on Fedora 18, then libguestfs may fail with an error: unsupported flag 0x2 in function xendaemoncreatexml Try one of the following solutions: export LIBGUESTFS_ATTACH_METHOD=libvirt:qemu:///session or: export LIBGUESTFS_ATTACH_METHOD=appliance Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://et.redhat.com/~rjones/virt-top
Also I accidentally compiled out LDM (Windows dynamic disk) support in the first Fedora 18 package. This will be fixed in a few days in the 1.20.1 [not yet released] build. https://bugzilla.redhat.com/show_bug.cgi?id=887812 Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming blog: http://rwmj.wordpress.com Fedora now supports 80 OCaml packages (the OPEN alternative to F#) http://cocan.org/getting_started_with_ocaml_on_red_hat_and_fedora
participants (2)
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Daniel P. Berrange -
Richard W.M. Jones