[libvirt] [PATCH v2 8/9] qemu: Add the group name option to the iotune command line
Add in the block I/O throttling group parameter to the command line
if supported. If not supported, fail command creation.
Add the xml2argvtest for testing.
Signed-off-by: John Ferlan <jferlan(a)redhat.com>
---
src/qemu/qemu_command.c | 13 +++++++++
.../qemuxml2argv-blkdeviotune-group-num.args | 32 ++++++++++++++++++++++
tests/qemuxml2argvtest.c | 4 +++
3 files changed, 49 insertions(+)
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-blkdeviotune-group-num.args
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 96c4f31..108fc9d 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -1773,6 +1773,15 @@ qemuBuildDriveStr(virDomainDiskDefPtr disk,
goto error;
}
+ /* block I/O group 2.4 */
+ if (disk->blkdeviotune.group_name &&
+ !virQEMUCapsGet(qemuCaps, QEMU_CAPS_DRIVE_IOTUNE_GROUP)) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("the block I/O throttling group parameter is "
+ "not supported with this QEMU binary"));
+ goto error;
+ }
+
/* block I/O throttling length 2.6 */
if ((disk->blkdeviotune.total_bytes_sec_max_length ||
disk->blkdeviotune.read_bytes_sec_max_length ||
@@ -1827,6 +1836,10 @@ qemuBuildDriveStr(virDomainDiskDefPtr disk,
IOTUNE_ADD(write_iops_sec_max, "iops-write-max");
IOTUNE_ADD(size_iops_sec, "iops-size");
+ if (disk->blkdeviotune.group_name) {
+ virBufferEscapeString(&opt, ",throttling.group=%s",
+ disk->blkdeviotune.group_name);
+ }
IOTUNE_ADD(total_bytes_sec_max_length, "bps-total-max-length");
IOTUNE_ADD(read_bytes_sec_max_length, "bps-read-max-length");
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-blkdeviotune-group-num.args
b/tests/qemuxml2argvdata/qemuxml2argv-blkdeviotune-group-num.args
new file mode 100644
index 0000000..b5a5cc0
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-blkdeviotune-group-num.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 1,sockets=1,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-nographic \
+-nodefaults \
+-monitor unix:/tmp/lib/domain--1-QEMUGuest1/monitor.sock,server,nowait \
+-no-acpi \
+-boot c \
+-usb \
+-drive file=/dev/HostVG/QEMUGuest1,format=qcow2,if=none,id=drive-ide0-0-0,\
+cache=none,throttling.bps-total=5000,throttling.iops-total=6000,\
+throttling.bps-total-max=10000,throttling.iops-total-max=11000,\
+throttling.group=libvirt_iotune_group1 \
+-device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 \
+-drive file=/dev/HostVG/QEMUGuest2,format=qcow2,if=none,id=drive-ide0-0-1,\
+cache=none,throttling.bps-read=5000,throttling.bps-write=5500,\
+throttling.iops-read=3500,throttling.iops-write=4000,\
+throttling.bps-read-max=6000,throttling.bps-write-max=6500,\
+throttling.iops-read-max=7000,throttling.iops-write-max=7500,\
+throttling.iops-size=2000,throttling.group=libvirt_iotune_group2 \
+-device ide-drive,bus=ide.0,unit=1,drive=drive-ide0-0-1,id=ide0-0-1 \
+-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index d025930..11dacf8 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -1531,6 +1531,10 @@ mymain(void)
DO_TEST("blkdeviotune-max",
QEMU_CAPS_DRIVE_IOTUNE,
QEMU_CAPS_DRIVE_IOTUNE_MAX);
+ DO_TEST("blkdeviotune-group-num",
+ QEMU_CAPS_DRIVE_IOTUNE,
+ QEMU_CAPS_DRIVE_IOTUNE_MAX,
+ QEMU_CAPS_DRIVE_IOTUNE_GROUP);
DO_TEST("blkdeviotune-max-length",
QEMU_CAPS_DRIVE_IOTUNE,
QEMU_CAPS_DRIVE_IOTUNE_MAX,
--
2.7.4