qemuxml2argvtest: disk-vhostuser: Add invocation for qemu-4.2

With qemu versions prior to qemu-5.0 we'll format 'scsi=off' for
virtio-blk disks, but also for vhost-user-blk. This is a bug as it's not
supported.

Add a test case to show that wrong configuration is generated by adding
running 'disk-vhostuser' test case on capabilities from qemu-4.2.

For this to be possible it's required to enable shared memory via NUMA
configuration as old QEMU's don't allow configuration of the default
memory backend. This is achieved by adding a copy of the
'disk-vhostuser' XML with NUMA enabled.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>

tests/qemuxml2argvdata/disk-vhostuser-numa.x86_64-4.2.0.args

@@ -0,0 +1,39 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/tmp/lib/domain--1-QEMUGuest1 \
+USER=test \
+LOGNAME=test \
+XDG_DATA_HOME=/tmp/lib/domain--1-QEMUGuest1/.local/share \
+XDG_CACHE_HOME=/tmp/lib/domain--1-QEMUGuest1/.cache \
+XDG_CONFIG_HOME=/tmp/lib/domain--1-QEMUGuest1/.config \
+/usr/bin/qemu-system-x86_64 \
+-name guest=QEMUGuest1,debug-threads=on \
+-S \
+-object secret,id=masterKey0,format=raw,file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
+-machine pc-i440fx-4.2,usb=off,dump-guest-core=off \
+-accel tcg \
+-cpu qemu64 \
+-m 14336 \
+-overcommit mem-lock=off \
+-smp 1,sockets=1,cores=1,threads=1 \
+-object memory-backend-file,id=ram-node0,mem-path=/var/lib/libvirt/qemu/ram/-1-QEMUGuest1/ram-node0,share=on,size=15032385536 \
+-numa node,nodeid=0,cpus=0,memdev=ram-node0 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,fd=1729,server=on,wait=off \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-no-acpi \
+-boot strict=on \
+-device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 \
+-chardev socket,id=chr-vu-virtio-disk0,path=/tmp/vhost1.sock \
+-device vhost-user-blk-pci,scsi=off,bus=pci.0,addr=0x2,chardev=chr-vu-virtio-disk0,id=virtio-disk0,bootindex=1 \
+-chardev socket,id=chr-vu-virtio-disk1,path=/tmp/vhost1.sock,reconnect=10 \
+-device vhost-user-blk-pci,iommu_platform=on,ats=on,packed=on,scsi=off,bus=pci.0,addr=0x3,chardev=chr-vu-virtio-disk1,id=virtio-disk1 \
+-audiodev '{"id":"audio1","driver":"none"}' \
+-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4 \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
+-msg timestamp=on

tests/qemuxml2argvdata/disk-vhostuser-numa.x86_64-latest.args

@@ -0,0 +1,39 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/tmp/lib/domain--1-QEMUGuest1 \
+USER=test \
+LOGNAME=test \
+XDG_DATA_HOME=/tmp/lib/domain--1-QEMUGuest1/.local/share \
+XDG_CACHE_HOME=/tmp/lib/domain--1-QEMUGuest1/.cache \
+XDG_CONFIG_HOME=/tmp/lib/domain--1-QEMUGuest1/.config \
+/usr/bin/qemu-system-x86_64 \
+-name guest=QEMUGuest1,debug-threads=on \
+-S \
+-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/tmp/lib/domain--1-QEMUGuest1/master-key.aes"}' \
+-machine pc,usb=off,dump-guest-core=off \
+-accel tcg \
+-cpu qemu64 \
+-m 14336 \
+-overcommit mem-lock=off \
+-smp 1,sockets=1,cores=1,threads=1 \
+-object '{"qom-type":"memory-backend-file","id":"ram-node0","mem-path":"/var/lib/libvirt/qemu/ram/-1-QEMUGuest1/ram-node0","share":true,"size":15032385536}' \
+-numa node,nodeid=0,cpus=0,memdev=ram-node0 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,fd=1729,server=on,wait=off \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-no-acpi \
+-boot strict=on \
+-device '{"driver":"piix3-usb-uhci","id":"usb","bus":"pci.0","addr":"0x1.0x2"}' \
+-chardev socket,id=chr-vu-virtio-disk0,path=/tmp/vhost1.sock \
+-device '{"driver":"vhost-user-blk-pci","bus":"pci.0","addr":"0x2","chardev":"chr-vu-virtio-disk0","id":"virtio-disk0","bootindex":1}' \
+-chardev socket,id=chr-vu-virtio-disk1,path=/tmp/vhost1.sock,reconnect=10 \
+-device '{"driver":"vhost-user-blk-pci","iommu_platform":true,"ats":true,"packed":true,"bus":"pci.0","addr":"0x3","chardev":"chr-vu-virtio-disk1","id":"virtio-disk1"}' \
+-audiodev '{"id":"audio1","driver":"none"}' \
+-device '{"driver":"virtio-balloon-pci","id":"balloon0","bus":"pci.0","addr":"0x4"}' \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
+-msg timestamp=on

tests/qemuxml2argvdata/disk-vhostuser-numa.xml

@@ -0,0 +1,32 @@
+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory unit='KiB'>219136</memory>
+  <currentMemory unit='KiB'>219136</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <cpu mode='custom' match='exact' check='none'>
+    <model fallback='forbid'>qemu64</model>
+    <numa>
+      <cell id='0' cpus='0' memory='14680064' unit='KiB' memAccess='shared'/>
+    </numa>
+  </cpu>
+  <os>
+    <type arch='x86_64' machine='pc'>hvm</type>
+  </os>
+  <devices>
+    <emulator>/usr/bin/qemu-system-x86_64</emulator>
+    <disk type='vhostuser' device='disk'>
+      <driver name='qemu' type='raw'/>
+      <source type='unix' path='/tmp/vhost1.sock'/>
+      <target dev='vda' bus='virtio'/>
+      <boot order='1'/>
+    </disk>
+    <disk type='vhostuser' device='disk'>
+      <driver name='qemu' type='raw' iommu='on' ats='on' packed='on'/>
+      <source type='unix' path='/tmp/vhost1.sock'>
+        <reconnect enabled='yes' timeout='10'/>
+      </source>
+      <target dev='vdb' bus='virtio'/>
+    </disk>
+  </devices>
+</domain>

tests/qemuxml2argvtest.c

@@ -1442,6 +1442,8 @@ mymain(void)
     VIR_FREE(driver.config->vxhsTLSx509certdir);
     DO_TEST_CAPS_LATEST("disk-no-boot");
     DO_TEST_CAPS_LATEST("disk-nvme");
+    DO_TEST_CAPS_VER("disk-vhostuser-numa", "4.2.0");
+    DO_TEST_CAPS_LATEST("disk-vhostuser-numa");
     DO_TEST_CAPS_LATEST("disk-vhostuser");
     DO_TEST_CAPS_LATEST_PARSE_ERROR("disk-device-lun-type-invalid");
     DO_TEST_CAPS_LATEST_PARSE_ERROR("disk-attaching-partition-nosupport");