[PATCH 3/3] qemu: add virtio-blk queue-size option
Hiroki Narukawa
hnarukaw at yahoo-corp.jp
Mon Sep 6 08:06:15 UTC 2021
---
src/qemu/qemu_command.c | 3 ++
src/qemu/qemu_validate.c | 6 ++++
.../disk-virtio-queue-size.args | 29 +++++++++++++++
.../disk-virtio-queue-size.xml | 35 +++++++++++++++++++
tests/qemuxml2argvtest.c | 2 ++
.../disk-virtio-queue-size.xml | 35 +++++++++++++++++++
tests/qemuxml2xmltest.c | 1 +
7 files changed, 111 insertions(+)
create mode 100644 tests/qemuxml2argvdata/disk-virtio-queue-size.args
create mode 100644 tests/qemuxml2argvdata/disk-virtio-queue-size.xml
create mode 100644 tests/qemuxml2xmloutdata/disk-virtio-queue-size.xml
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index b230314f7f..f0319d2234 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -1738,6 +1738,9 @@ qemuBuildDiskDeviceStr(const virDomainDef *def,
if (disk->queues) {
virBufferAsprintf(&opt, ",num-queues=%u", disk->queues);
}
+ if (disk->queue_size > 0) {
+ virBufferAsprintf(&opt, ",queue-size=%u", disk->queue_size);
+ }
qemuBuildVirtioOptionsStr(&opt, disk->virtio);
diff --git a/src/qemu/qemu_validate.c b/src/qemu/qemu_validate.c
index 8906aa52d9..79f2143820 100644
--- a/src/qemu/qemu_validate.c
+++ b/src/qemu/qemu_validate.c
@@ -2822,6 +2822,12 @@ qemuValidateDomainDeviceDefDiskFrontend(const virDomainDiskDef *disk,
"QEMU binary"));
return -1;
}
+ if (disk->queue_size > 0 &&
+ !virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_BLK_QUEUE_SIZE)) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("queue-size property isn't supported by this QEMU binary"));
+ return -1;
+ }
break;
case VIR_DOMAIN_DISK_BUS_USB:
diff --git a/tests/qemuxml2argvdata/disk-virtio-queue-size.args b/tests/qemuxml2argvdata/disk-virtio-queue-size.args
new file mode 100644
index 0000000000..09d47d7e5d
--- /dev/null
+++ b/tests/qemuxml2argvdata/disk-virtio-queue-size.args
@@ -0,0 +1,29 @@
+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 \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-i386 \
+-name guest=QEMUGuest1,debug-threads=on \
+-S \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-m 214 \
+-realtime mlock=off \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,path=/tmp/lib/domain--1-QEMUGuest1/monitor.sock,server=on,wait=off \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-no-acpi \
+-usb \
+-drive file=/tmp/data.img,format=raw,if=none,id=drive-virtio-disk0 \
+-device virtio-blk-pci,queue-size=4,bus=pci.0,addr=0x3,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 \
+-msg timestamp=on
diff --git a/tests/qemuxml2argvdata/disk-virtio-queue-size.xml b/tests/qemuxml2argvdata/disk-virtio-queue-size.xml
new file mode 100644
index 0000000000..19d886fd65
--- /dev/null
+++ b/tests/qemuxml2argvdata/disk-virtio-queue-size.xml
@@ -0,0 +1,35 @@
+<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>
+ <os>
+ <type arch='i686' machine='pc'>hvm</type>
+ <boot dev='hd'/>
+ </os>
+ <clock offset='utc'/>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>destroy</on_crash>
+ <devices>
+ <emulator>/usr/bin/qemu-system-i386</emulator>
+ <disk type='file' device='disk'>
+ <driver name='qemu' type='raw' queue_size='4'/>
+ <source file='/tmp/data.img'/>
+ <target dev='vda' bus='virtio'/>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+ </disk>
+ <controller type='usb' index='0'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+ </controller>
+ <controller type='ide' index='0'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
+ </controller>
+ <controller type='pci' index='0' model='pci-root'/>
+ <input type='mouse' bus='ps2'/>
+ <input type='keyboard' bus='ps2'/>
+ <audio id='1' type='none'/>
+ <memballoon model='none'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 3b331d5fd4..43532c3890 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -1341,6 +1341,8 @@ mymain(void)
DO_TEST("disk-order", QEMU_CAPS_VIRTIO_BLK_SCSI);
DO_TEST("disk-virtio-queues",
QEMU_CAPS_VIRTIO_BLK_NUM_QUEUES);
+ DO_TEST("disk-virtio-queue-size",
+ QEMU_CAPS_VIRTIO_BLK_QUEUE_SIZE);
DO_TEST_NOCAPS("disk-boot-disk");
DO_TEST_NOCAPS("disk-boot-cdrom");
DO_TEST_NOCAPS("floppy-drive-fat");
diff --git a/tests/qemuxml2xmloutdata/disk-virtio-queue-size.xml b/tests/qemuxml2xmloutdata/disk-virtio-queue-size.xml
new file mode 100644
index 0000000000..19d886fd65
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/disk-virtio-queue-size.xml
@@ -0,0 +1,35 @@
+<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>
+ <os>
+ <type arch='i686' machine='pc'>hvm</type>
+ <boot dev='hd'/>
+ </os>
+ <clock offset='utc'/>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>destroy</on_crash>
+ <devices>
+ <emulator>/usr/bin/qemu-system-i386</emulator>
+ <disk type='file' device='disk'>
+ <driver name='qemu' type='raw' queue_size='4'/>
+ <source file='/tmp/data.img'/>
+ <target dev='vda' bus='virtio'/>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+ </disk>
+ <controller type='usb' index='0'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+ </controller>
+ <controller type='ide' index='0'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
+ </controller>
+ <controller type='pci' index='0' model='pci-root'/>
+ <input type='mouse' bus='ps2'/>
+ <input type='keyboard' bus='ps2'/>
+ <audio id='1' type='none'/>
+ <memballoon model='none'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c
index 6d3526f91f..ee1ee88b85 100644
--- a/tests/qemuxml2xmltest.c
+++ b/tests/qemuxml2xmltest.c
@@ -302,6 +302,7 @@ mymain(void)
DO_TEST_NOCAPS("disk-virtio");
DO_TEST_NOCAPS("floppy-drive-fat");
DO_TEST("disk-virtio-queues", QEMU_CAPS_VIRTIO_BLK_NUM_QUEUES);
+ DO_TEST("disk-virtio-queue-size", QEMU_CAPS_VIRTIO_BLK_QUEUE_SIZE);
DO_TEST_NOCAPS("disk-boot-disk");
DO_TEST_NOCAPS("disk-boot-cdrom");
DO_TEST_NOCAPS("disk-error-policy");
--
2.17.1
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