[Pkg-libvirt-maintainers] Bug#925621: virsh: error: internal error: Failed to probe QEMU binary with QMP:\n

Thorsten Glaser t.glaser at tarent.de
Wed Mar 27 18:04:19 GMT 2019

On Wed, 27 Mar 2019, Thorsten Glaser wrote:

> I cannot start any VM any more:
> tglase at tglase:~ $ virsh -c qemu:///system start Netboot
> error: Failed to start domain Netboot
> error: internal error: Failed to probe QEMU binary with QMP:

I’ve just, after a reboot, seen something interesting in syslog,
which indicates that newer libvirt MIGHT be starting the qemu
processes as dæmons in the background, instead of just when the
VMs are started.

Is this true, and, if so, can it be disabled?

My <emulator/> is a shell script looking like this:

tglase at tglase:~ $ cat /usr/local/bin/qemu-in-chroot
exec schroot -c sid-amd64 -u root -- qemu-system-x86_64 -enable-kvm "$@"

The reason for this is that qemu:x32 cannot give the VMs enough
virtual memory and that I need the amd64 binaries for that, but
I don’t want to always use the amd64 binaries, so I have both,
and amd64 only in chroot (plus the library dependencies are heavy
enough to preclude installation of the amd64 M-A alternative on
the main x32 system).

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