On Wed, Apr 05, 2023 at 17:37:31 +0200, André Malm wrote: > Den 2023-04-05 kl. 09:47, skrev Peter Krempa: > > The backup operation is quite complex so it is possible. > > Please have a look into /var/log/libvirt/qemu/$VMNAME.log to see whether > > qemu logged something like an assertion failure before crashing. > > > > Additionally you can have a look into 'coredumpctl' whether there are > > any recorded crashes of 'qemu-system-x86_64' and also possibly collect > > the backtrace. > > > > Also make sure to try updating the qemu package and see whether the bug > > reproduces. > > > > If yes, please collect the stack/back-trace, versions of qemu and > > libvirt, the contents of the VM log file and also ideally configure > > libvirt for debug logging and collect the debug log as well: > > > > https://www.libvirt.org/kbase/debuglogs.html > > In the $VMNAME.log: qemu-system-x86_64: ../../block/qcow2.c:5175: > qcow2_get_specific_info: Assertion `false' failed. > > I'm running libvirt 8.0.0, which is the latest version for my dist (ubuntu > 22.04). If required how would I properly upgrade? > > Looking at https://github.com/qemu/qemu/blob/0c8022876f2183f93e23a7314862140c94ee62e7/block/qcow2.c > which would be the version of qcow2.c for 8.0.0 there seem to be some issue > with qcow2 compat. Huh, that is weird. Both images seem to be qcow2v3 so it's weird that the code reaches the assertion. I think at this point you should report an issue with qemu: https://gitlab.com/qemu-project/qemu/-/issues or report it on the qemu-block@xxxxxxxxxx mailing list You'll be asked for what operations lead to the failure so please make sure to collect the libvirt debug log as I've requested. I can help the qemu team to analyze it so make sure to mention me (or my gitlab handle 'pipo.sk') on the issue.
