snap: fix s390x hypervisor snap packaging#202
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Enable the snap to run the libvirt/nova-compute stack on s390x by addressing the packaging issues found during LPAR validation. Build QEMU with the s390x-softmmu target so nova-compute can find a native s390x emulator. Expose /etc/mdevctl.d to libvirtd through a read-only system-files plug, matching libvirt's mediated-device discovery behaviour. Create /usr/sbin/ovs-vswitchd as a fallback symlink when the non-DPDK Open vSwitch binary is staged, so ovsdb-server startup can report the OVS version. These changes are no-ops for existing amd64/arm64 paths except for the fallback symlink guard, which only runs when /usr/sbin/ovs-vswitchd is otherwise missing. Assisted-by: Codex 5.5 Signed-off-by: Myles Penner <myles.penner@canonical.com>
gboutry
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Jun 29, 2026
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Can you raise a request on the snapcraft forum for the new plug you request and ensure it's approved before landing this PR?
Can you verify that no other interfaces grant this specific capability first?
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Enable the snap to run the libvirt/nova-compute stack on s390x by addressing the packaging issues found during LPAR validation.
Build QEMU with the s390x-softmmu target so nova-compute can find a native s390x emulator.
Expose /etc/mdevctl.d to libvirtd through a read-only system-files plug, matching libvirt's mediated-device discovery behaviour.
Create /usr/sbin/ovs-vswitchd as a fallback symlink when the non-DPDK Open vSwitch binary is staged, so ovsdb-server startup can report the OVS version.
These changes are no-ops for existing amd64/arm64 paths except for the fallback symlink guard, which only runs when /usr/sbin/ovs-vswitchd is otherwise missing.
Assisted-by: Codex 5.5