[PATCH 5/5] qemu: add virtio-blk queue-size option

The option "queue-size" in virtio-blk was added in qemu-2.12.0, and default value increased from qemu-5.0.0. However, increasing this value may lead to drop of random access performance. This is configurable value, so we want to use it via libvirt. Signed-off-by: Hiroki Narukawa <hnarukaw(a)yahoo-corp.jp&gt; --- src/qemu/qemu_command.c | 3 ++ src/qemu/qemu_validate.c | 7 ++++ .../disk-virtio-queue-size.args | 35 +++++++++++++++++ .../disk-virtio-queue-size.x86_64-latest.args | 35 +++++++++++++++++ .../disk-virtio-queue-size.xml | 38 +++++++++++++++++++ tests/qemuxml2argvtest.c | 1 + .../disk-virtio-queue-size.x86_64-latest.xml | 38 +++++++++++++++++++ .../disk-virtio-queue-size.xml | 35 +++++++++++++++++ tests/qemuxml2xmltest.c | 1 + 9 files changed, 193 insertions(+) create mode 100644 tests/qemuxml2argvdata/disk-virtio-queue-size.args create mode 100644 tests/qemuxml2argvdata/disk-virtio-queue-size.x86_64-latest.args create mode 100644 tests/qemuxml2argvdata/disk-virtio-queue-size.xml create mode 100644 tests/qemuxml2xmloutdata/disk-virtio-queue-size.x86_64-latest.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 1a470f1ff5..16ccf2e76d 100644 --- a/src/qemu/qemu_validate.c +++ b/src/qemu/qemu_validate.c @@ -2823,6 +2823,13 @@ qemuValidateDomainDeviceDefDiskFrontend(const virDomainDiskDef *disk, "QEMU binary")); return -1; } + if (disk->queue_size && + !virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_BLK_NUM_QUEUES)) { + 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..2985e1726c --- /dev/null +++ b/tests/qemuxml2argvdata/disk-virtio-queue-size.args @@ -0,0 +1,35 @@ +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-i386 \ +-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,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \ +-cpu qemu64 \ +-m 214 \ +-object '{"qom-type":"memory-backend-ram","id":"pc.ram","size":224395264}' \ +-overcommit mem-lock=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,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 \ +-blockdev '{"driver":"file","filename":"/tmp/data.img","node-name":"libvirt-1-storage","auto-read-only":true,"discard":"unmap"}' \ +-blockdev '{"node-name":"libvirt-1-format","read-only":false,"driver":"raw","file":"libvirt-1-storage"}' \ +-device virtio-blk-pci,queue-size=4,bus=pci.0,addr=0x3,drive=libvirt-1-format,id=virtio-disk0,bootindex=1 \ +-audiodev id=audio1,driver=none \ +-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \ +-msg timestamp=on diff --git a/tests/qemuxml2argvdata/disk-virtio-queue-size.x86_64-latest.args b/tests/qemuxml2argvdata/disk-virtio-queue-size.x86_64-latest.args new file mode 100644 index 0000000000..2985e1726c --- /dev/null +++ b/tests/qemuxml2argvdata/disk-virtio-queue-size.x86_64-latest.args @@ -0,0 +1,35 @@ +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-i386 \ +-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,accel=tcg,usb=off,dump-guest-core=off,memory-backend=pc.ram \ +-cpu qemu64 \ +-m 214 \ +-object '{"qom-type":"memory-backend-ram","id":"pc.ram","size":224395264}' \ +-overcommit mem-lock=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,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 \ +-blockdev '{"driver":"file","filename":"/tmp/data.img","node-name":"libvirt-1-storage","auto-read-only":true,"discard":"unmap"}' \ +-blockdev '{"node-name":"libvirt-1-format","read-only":false,"driver":"raw","file":"libvirt-1-storage"}' \ +-device virtio-blk-pci,queue-size=4,bus=pci.0,addr=0x3,drive=libvirt-1-format,id=virtio-disk0,bootindex=1 \ +-audiodev id=audio1,driver=none \ +-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \ +-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..1cd3f830e5 --- /dev/null +++ b/tests/qemuxml2argvdata/disk-virtio-queue-size.xml @@ -0,0 +1,38 @@ +<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> + <cpu mode='custom' match='exact' check='none'> + <model fallback='forbid'>qemu64</model> + </cpu> + <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' model='piix3-uhci'> + <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 59dfef52fd..8f6058f947 100644 --- a/tests/qemuxml2argvtest.c +++ b/tests/qemuxml2argvtest.c @@ -1340,6 +1340,7 @@ mymain(void) DO_TEST_PARSE_ERROR("non-x86_64-timer-error", QEMU_CAPS_CCW); DO_TEST("disk-order", QEMU_CAPS_VIRTIO_BLK_SCSI); DO_TEST_CAPS_LATEST("disk-virtio-queues"); + DO_TEST_CAPS_LATEST("disk-virtio-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.x86_64-latest.xml b/tests/qemuxml2xmloutdata/disk-virtio-queue-size.x86_64-latest.xml new file mode 100644 index 0000000000..1cd3f830e5 --- /dev/null +++ b/tests/qemuxml2xmloutdata/disk-virtio-queue-size.x86_64-latest.xml @@ -0,0 +1,38 @@ +<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> + <cpu mode='custom' match='exact' check='none'> + <model fallback='forbid'>qemu64</model> + </cpu> + <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' model='piix3-uhci'> + <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/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 b88f7c404d..d7dd37f061 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_CAPS_LATEST("disk-virtio-queues"); + DO_TEST_CAPS_LATEST("disk-virtio-queue-size"); DO_TEST_NOCAPS("disk-boot-disk"); DO_TEST_NOCAPS("disk-boot-cdrom"); DO_TEST_NOCAPS("disk-error-policy"); -- 2.17.1