[libvirt] [PATCH 8/8] qemu: Add 'iothread' to command line for supported controller
John Ferlan
jferlan at redhat.com
Thu Apr 21 23:24:16 UTC 2016
https://bugzilla.redhat.com/show_bug.cgi?id=1286709
Now that we have all the pieces in place, we can add the 'iothread=#' to
the command line for the (two) controllers that support it (virtio-scsi-pci
and virtio-scsi-ccw). Add the tests as well...
Signed-off-by: John Ferlan <jferlan at redhat.com>
---
src/qemu/qemu_command.c | 86 ++++++++++++++++++++--
.../qemuxml2argv-iothreads-virtio-scsi-ccw.args | 28 +++++++
.../qemuxml2argv-iothreads-virtio-scsi-pci.args | 32 ++++++++
tests/qemuxml2argvtest.c | 6 ++
4 files changed, 146 insertions(+), 6 deletions(-)
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-iothreads-virtio-scsi-ccw.args
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-iothreads-virtio-scsi-pci.args
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index b7388ef..115d115 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -2206,6 +2206,65 @@ qemuBuildUSBControllerDevStr(const virDomainDef *domainDef,
return 0;
}
+
+/* qemuCheckSCSIControllerIOThreads:
+ * @domainDef: Pointer to domain def
+ * @def: Pointer to controller def
+ * @qemuCaps: Capabilities
+ *
+ * If this controller definition has iothreads set, let's make sure the
+ * configuration is right before adding to the command line
+ *
+ * Returns true if either supported or there are no iothreads for controller;
+ * otherwise, returns false if configuration is not quite right.
+ */
+static bool
+qemuCheckSCSIControllerIOThreads(const virDomainDef *domainDef,
+ virDomainControllerDefPtr def,
+ virQEMUCapsPtr qemuCaps)
+{
+ if (!def->iothread)
+ return true;
+
+ /* By this time QEMU_CAPS_OBJECT_IOTHREAD was already checked.
+ * We just need to check if the QEMU_CAPS_VIRTIO_SCSI_IOTHREAD
+ * capability is set.
+ */
+ if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_SCSI_IOTHREAD)) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("IOThreads for virtio-scsi not supported for "
+ "this QEMU"));
+ return false;
+ }
+
+ if (def->model != VIR_DOMAIN_CONTROLLER_MODEL_SCSI_VIRTIO_SCSI) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("IOThreads only supported for virtio-scsi "
+ "controllers model is '%s'"),
+ virDomainControllerModelSCSITypeToString(def->model));
+ return false;
+ }
+
+ if (def->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI &&
+ def->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_CCW) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("IOThreads only available for virtio pci and "
+ "virtio ccw controllers"));
+ return false;
+ }
+
+ /* Can we find the controller iothread in the iothreadid list? */
+ if (!virDomainIOThreadIDFind(domainDef, def->iothread)) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("controller iothread '%u' not defined in iothreadid"),
+ def->iothread);
+ return false;
+ }
+
+ return true;
+}
+
+
char *
qemuBuildControllerDevStr(const virDomainDef *domainDef,
virDomainControllerDefPtr def,
@@ -2253,16 +2312,31 @@ qemuBuildControllerDevStr(const virDomainDef *domainDef,
case VIR_DOMAIN_CONTROLLER_TYPE_SCSI:
switch (model) {
case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_VIRTIO_SCSI:
- if (def->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_CCW)
+ if (def->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_CCW) {
virBufferAddLit(&buf, "virtio-scsi-ccw");
- else if (def->info.type ==
- VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_S390)
+ if (def->iothread) {
+ if (!qemuCheckSCSIControllerIOThreads(domainDef,
+ def, qemuCaps))
+ goto error;
+ virBufferAsprintf(&buf, ",iothread=iothread%u",
+ def->iothread);
+ }
+ } else if (def->info.type ==
+ VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_S390) {
virBufferAddLit(&buf, "virtio-scsi-s390");
- else if (def->info.type ==
- VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_MMIO)
+ } else if (def->info.type ==
+ VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_MMIO) {
virBufferAddLit(&buf, "virtio-scsi-device");
- else
+ } else {
virBufferAddLit(&buf, "virtio-scsi-pci");
+ if (def->iothread) {
+ if (!qemuCheckSCSIControllerIOThreads(domainDef,
+ def, qemuCaps))
+ goto error;
+ virBufferAsprintf(&buf, ",iothread=iothread%u",
+ def->iothread);
+ }
+ }
break;
case VIR_DOMAIN_CONTROLLER_MODEL_SCSI_LSILOGIC:
virBufferAddLit(&buf, "lsi");
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-iothreads-virtio-scsi-ccw.args b/tests/qemuxml2argvdata/qemuxml2argv-iothreads-virtio-scsi-ccw.args
new file mode 100644
index 0000000..edf49bf
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-iothreads-virtio-scsi-ccw.args
@@ -0,0 +1,28 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/home/test \
+USER=test \
+LOGNAME=test \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu \
+-name QEMUGuest1 \
+-S \
+-M s390-ccw \
+-m 214 \
+-smp 1 \
+-object iothread,id=iothread1 \
+-object iothread,id=iothread2 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-nographic \
+-nodefaults \
+-monitor unix:/tmp/lib/domain--1-QEMUGuest1/monitor.sock,server,nowait \
+-no-acpi \
+-boot c \
+-device virtio-scsi-ccw,iothread=iothread2,id=scsi0,devno=fe.0.0001 \
+-drive file=/dev/HostVG/QEMUGuest1,format=raw,if=none,id=drive-virtio-disk0 \
+-device virtio-blk-ccw,iothread=iothread1,devno=fe.0.0000,\
+drive=drive-virtio-disk0,id=virtio-disk0 \
+-drive file=/dev/HostVG/QEMUGuest2,format=raw,if=none,id=drive-scsi0-0-2-0 \
+-device scsi-disk,bus=scsi0.0,channel=0,scsi-id=2,lun=0,drive=drive-scsi0-0-2-0,\
+id=scsi0-0-2-0 \
+-device virtio-balloon-ccw,id=balloon0,devno=fe.0.000a
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-iothreads-virtio-scsi-pci.args b/tests/qemuxml2argvdata/qemuxml2argv-iothreads-virtio-scsi-pci.args
new file mode 100644
index 0000000..bd83b27
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-iothreads-virtio-scsi-pci.args
@@ -0,0 +1,32 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/home/test \
+USER=test \
+LOGNAME=test \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu \
+-name QEMUGuest1 \
+-S \
+-M pc \
+-m 214 \
+-smp 2 \
+-object iothread,id=iothread1 \
+-object iothread,id=iothread2 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-nographic \
+-nodefaults \
+-monitor unix:/tmp/lib/domain--1-QEMUGuest1/monitor.sock,server,nowait \
+-no-acpi \
+-boot c \
+-device virtio-scsi-pci,iothread=iothread2,id=scsi0,bus=pci.0,addr=0xb \
+-usb \
+-drive file=/dev/HostVG/QEMUGuest1,format=raw,if=none,id=drive-ide0-0-0 \
+-device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 \
+-drive file=/var/lib/libvirt/images/iothrtest1.img,format=raw,if=none,\
+id=drive-virtio-disk1 \
+-device virtio-blk-pci,iothread=iothread1,bus=pci.0,addr=0x4,\
+drive=drive-virtio-disk1,id=virtio-disk1 \
+-drive file=/var/lib/libvirt/images/iothrtest2.img,format=raw,if=none,\
+id=drive-scsi0-0-0-3 \
+-device scsi-disk,bus=scsi0.0,channel=0,scsi-id=0,lun=3,drive=drive-scsi0-0-0-3,\
+id=scsi0-0-0-3
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 8842b2f..328a931 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -1254,6 +1254,12 @@ mymain(void)
DO_TEST("iothreads-disk", QEMU_CAPS_OBJECT_IOTHREAD);
DO_TEST("iothreads-disk-virtio-ccw", QEMU_CAPS_OBJECT_IOTHREAD,
QEMU_CAPS_VIRTIO_CCW, QEMU_CAPS_VIRTIO_S390);
+ DO_TEST("iothreads-virtio-scsi-pci", QEMU_CAPS_VIRTIO_SCSI,
+ QEMU_CAPS_OBJECT_IOTHREAD,
+ QEMU_CAPS_VIRTIO_SCSI_IOTHREAD);
+ DO_TEST("iothreads-virtio-scsi-ccw", QEMU_CAPS_OBJECT_IOTHREAD,
+ QEMU_CAPS_VIRTIO_SCSI, QEMU_CAPS_VIRTIO_SCSI_IOTHREAD,
+ QEMU_CAPS_VIRTIO_CCW, QEMU_CAPS_VIRTIO_S390);
DO_TEST("cpu-topology1", QEMU_CAPS_SMP_TOPOLOGY);
DO_TEST("cpu-topology2", QEMU_CAPS_SMP_TOPOLOGY);
--
2.5.5
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