On Thu, 09 Sep 2021 19:28:04 +0100 Daniel P. Berrangé wrote: > On Thu, Sep 09, 2021 at 02:33:25PM +0200, Štěpán Němec wrote: >> libvirt.libvirtError: operation failed: Failed to take snapshot: pre-save failed: qxl >> Error: Error while writing VM state: Unknown error -1 >> >> I am on Arch Linux (x86_64), using the distro packages. Checking my >> pacman logs, might update of qemu-headless from 6.0.0 to 6.1.0 have >> something to do with that? > > Yes, auite likely related to the QEMU update as > > "pre-save failed: qxl" > > is an error message that libvirt is getting back from QEMU. Thanks! > There was a change in this code in qemu in 6.1.0, but that was > replacing an assert() with this graceful error message. So if > anything your older QEMU ought to have been crashing ! Not only were/is it not crashing; downgrading the package back to 6.0.0 makes the snapshots work again. > Anyway, I think you need to report this to the QEMU community. Filed as https://gitlab.com/qemu-project/qemu/-/issues/610 Thank you, Štěpán
