[libvirt] [PATCH v2 0/2] Add multiqueue support for virtio-blk
The multiqueue for virtio-blk was introduced since qemu 2.7.0. These patches supported it and update test data for it. v1 -> v2: Follow Ján Tomko's suggestion: * move qemu_capabilities.{ch} to patch 1/2. * use virStrToLong_uip instead of virStrToLong_ui. * move virtio disk check code from formatter to virDomainDiskDefValidate. not sure if it's the right place because Ján suggests to qemuDomain*DefValidate. * if qemu doesn't have num-queues support, report error instead of doing nothing. Lin Ma (2): qemucapstest: Update test data for 'num-queues' property of virtio-blk qemu: Support multiqueue virtio-blk docs/formatdomain.html.in | 6 +++- docs/schemas/domaincommon.rng | 5 ++++ src/conf/domain_conf.c | 18 ++++++++++++ src/conf/domain_conf.h | 1 + src/qemu/qemu_capabilities.c | 2 ++ src/qemu/qemu_capabilities.h | 1 + src/qemu/qemu_command.c | 7 +++++ src/qemu/qemu_domain.c | 24 +++++++++++++++ src/qemu/qemu_domain.h | 3 ++ tests/qemucapabilitiesdata/caps_2.10.0.s390x.xml | 1 + tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_2.7.0.s390x.xml | 1 + tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml | 1 + tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_2.9.0.ppc64le.xml | 1 + tests/qemucapabilitiesdata/caps_2.9.0.s390x.xml | 1 + tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml | 1 + .../qemuxml2argv-disk-virtio-drive-queues.args | 24 +++++++++++++++ .../qemuxml2argv-disk-virtio-drive-queues.xml | 34 ++++++++++++++++++++++ tests/qemuxml2argvtest.c | 2 ++ .../qemuxml2xmlout-disk-virtio-drive-queues.xml | 34 ++++++++++++++++++++++ tests/qemuxml2xmltest.c | 1 + 23 files changed, 170 insertions(+), 1 deletion(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-virtio-drive-queues.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-virtio-drive-queues.xml create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-disk-virtio-drive-queues.xml -- 2.9.2
Signed-off-by: Lin Ma <lma@suse.com> --- src/qemu/qemu_capabilities.c | 2 ++ src/qemu/qemu_capabilities.h | 1 + tests/qemucapabilitiesdata/caps_2.10.0.s390x.xml | 1 + tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_2.7.0.s390x.xml | 1 + tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml | 1 + tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_2.9.0.ppc64le.xml | 1 + tests/qemucapabilitiesdata/caps_2.9.0.s390x.xml | 1 + tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml | 1 + 11 files changed, 12 insertions(+) diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c index 085910d..f902815 100644 --- a/src/qemu/qemu_capabilities.c +++ b/src/qemu/qemu_capabilities.c @@ -442,6 +442,7 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAST, /* 270 */ "vxhs", + "virtio-blk.num-queues", ); @@ -1692,6 +1693,7 @@ static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsVirtioBlk[] = { { "event_idx", QEMU_CAPS_VIRTIO_BLK_EVENT_IDX }, { "scsi", QEMU_CAPS_VIRTIO_BLK_SCSI }, { "logical_block_size", QEMU_CAPS_BLOCKIO }, + { "num-queues", QEMU_CAPS_VIRTIO_BLK_NUM_QUEUES }, }; static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsVirtioNet[] = { diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h index 214734f..2d16e5b 100644 --- a/src/qemu/qemu_capabilities.h +++ b/src/qemu/qemu_capabilities.h @@ -428,6 +428,7 @@ typedef enum { /* 270 */ QEMU_CAPS_VXHS, /* -drive file.driver=vxhs via query-qmp-schema */ + QEMU_CAPS_VIRTIO_BLK_NUM_QUEUES, /* virtio-blk-*.num-queues */ QEMU_CAPS_LAST /* this must always be the last item */ } virQEMUCapsFlags; diff --git a/tests/qemucapabilitiesdata/caps_2.10.0.s390x.xml b/tests/qemucapabilitiesdata/caps_2.10.0.s390x.xml index 2806345..2546ebd 100644 --- a/tests/qemucapabilitiesdata/caps_2.10.0.s390x.xml +++ b/tests/qemucapabilitiesdata/caps_2.10.0.s390x.xml @@ -140,6 +140,7 @@ <flag name='chardev-reconnect'/> <flag name='virtio-gpu.max_outputs'/> <flag name='vxhs'/> + <flag name='virtio-blk.num-queues'/> <version>2010000</version> <kvmVersion>0</kvmVersion> <package></package> diff --git a/tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml index 8a31431..10a182e 100644 --- a/tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml @@ -223,6 +223,7 @@ <flag name='chardev-reconnect'/> <flag name='virtio-gpu.max_outputs'/> <flag name='vxhs'/> + <flag name='virtio-blk.num-queues'/> <version>2010000</version> <kvmVersion>0</kvmVersion> <package> (v2.10.0)</package> diff --git a/tests/qemucapabilitiesdata/caps_2.7.0.s390x.xml b/tests/qemucapabilitiesdata/caps_2.7.0.s390x.xml index fe7bca9..c5dfa2a 100644 --- a/tests/qemucapabilitiesdata/caps_2.7.0.s390x.xml +++ b/tests/qemucapabilitiesdata/caps_2.7.0.s390x.xml @@ -134,6 +134,7 @@ <flag name='vnc-multi-servers'/> <flag name='chardev-reconnect'/> <flag name='virtio-gpu.max_outputs'/> + <flag name='virtio-blk.num-queues'/> <version>2007000</version> <kvmVersion>0</kvmVersion> <package></package> diff --git a/tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml index 3fd28f0..59adff6 100644 --- a/tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml @@ -207,6 +207,7 @@ <flag name='vnc-multi-servers'/> <flag name='chardev-reconnect'/> <flag name='virtio-gpu.max_outputs'/> + <flag name='virtio-blk.num-queues'/> <version>2007000</version> <kvmVersion>0</kvmVersion> <package> (v2.7.0)</package> diff --git a/tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml b/tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml index 21bbb82..6d26896 100644 --- a/tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml +++ b/tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml @@ -136,6 +136,7 @@ <flag name='vnc-multi-servers'/> <flag name='chardev-reconnect'/> <flag name='virtio-gpu.max_outputs'/> + <flag name='virtio-blk.num-queues'/> <version>2007093</version> <kvmVersion>0</kvmVersion> <package></package> diff --git a/tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml index 761f9d1..88029c0 100644 --- a/tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml @@ -209,6 +209,7 @@ <flag name='vnc-multi-servers'/> <flag name='chardev-reconnect'/> <flag name='virtio-gpu.max_outputs'/> + <flag name='virtio-blk.num-queues'/> <version>2008000</version> <kvmVersion>0</kvmVersion> <package> (v2.8.0)</package> diff --git a/tests/qemucapabilitiesdata/caps_2.9.0.ppc64le.xml b/tests/qemucapabilitiesdata/caps_2.9.0.ppc64le.xml index a373a6d..786cea8 100644 --- a/tests/qemucapabilitiesdata/caps_2.9.0.ppc64le.xml +++ b/tests/qemucapabilitiesdata/caps_2.9.0.ppc64le.xml @@ -172,6 +172,7 @@ <flag name='vnc-multi-servers'/> <flag name='chardev-reconnect'/> <flag name='virtio-gpu.max_outputs'/> + <flag name='virtio-blk.num-queues'/> <version>2009000</version> <kvmVersion>0</kvmVersion> <package> (v2.9.0)</package> diff --git a/tests/qemucapabilitiesdata/caps_2.9.0.s390x.xml b/tests/qemucapabilitiesdata/caps_2.9.0.s390x.xml index e80782c..896ed50 100644 --- a/tests/qemucapabilitiesdata/caps_2.9.0.s390x.xml +++ b/tests/qemucapabilitiesdata/caps_2.9.0.s390x.xml @@ -137,6 +137,7 @@ <flag name='vnc-multi-servers'/> <flag name='chardev-reconnect'/> <flag name='virtio-gpu.max_outputs'/> + <flag name='virtio-blk.num-queues'/> <version>2009000</version> <kvmVersion>0</kvmVersion> <package></package> diff --git a/tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml index 3641d03..e3ff127 100644 --- a/tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml @@ -220,6 +220,7 @@ <flag name='vnc-multi-servers'/> <flag name='chardev-reconnect'/> <flag name='virtio-gpu.max_outputs'/> + <flag name='virtio-blk.num-queues'/> <version>2009000</version> <kvmVersion>0</kvmVersion> <package> (v2.9.0)</package> -- 2.9.2
On Sun, Oct 01, 2017 at 01:15:35AM +0800, Lin Ma wrote:
Signed-off-by: Lin Ma <lma@suse.com> --- src/qemu/qemu_capabilities.c | 2 ++ src/qemu/qemu_capabilities.h | 1 + tests/qemucapabilitiesdata/caps_2.10.0.s390x.xml | 1 + tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_2.7.0.s390x.xml | 1 + tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml | 1 + tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_2.9.0.ppc64le.xml | 1 + tests/qemucapabilitiesdata/caps_2.9.0.s390x.xml | 1 + tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml | 1 + 11 files changed, 12 insertions(+)
ACK Jan
qemu 2.7.0 introduces multiqueue virtio-blk(commit 2f27059). This patch introduces a new attribute "queues". An example of the XML: <disk type='file' device='disk'> <driver name='qemu' type='qcow2' queues='4'/> The corresponding QEMU command line: -device virtio-blk-pci,scsi=off,num-queues=4,id=virtio-disk0 Signed-off-by: Lin Ma <lma@suse.com> --- docs/formatdomain.html.in | 6 +++- docs/schemas/domaincommon.rng | 5 ++++ src/conf/domain_conf.c | 18 ++++++++++++ src/conf/domain_conf.h | 1 + src/qemu/qemu_command.c | 7 +++++ src/qemu/qemu_domain.c | 24 +++++++++++++++ src/qemu/qemu_domain.h | 3 ++ .../qemuxml2argv-disk-virtio-drive-queues.args | 24 +++++++++++++++ .../qemuxml2argv-disk-virtio-drive-queues.xml | 34 ++++++++++++++++++++++ tests/qemuxml2argvtest.c | 2 ++ .../qemuxml2xmlout-disk-virtio-drive-queues.xml | 34 ++++++++++++++++++++++ tests/qemuxml2xmltest.c | 1 + 12 files changed, 158 insertions(+), 1 deletion(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-virtio-drive-queues.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-virtio-drive-queues.xml create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-disk-virtio-drive-queues.xml diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in index 5bdcb56..bf53945 100644 --- a/docs/formatdomain.html.in +++ b/docs/formatdomain.html.in @@ -2393,7 +2393,7 @@ <target dev='vdc' bus='virtio'/> </disk> <disk type='file' device='disk'> - <driver name='qemu' type='qcow2'/> + <driver name='qemu' type='qcow2' queues='4'/> <source file='/var/lib/libvirt/images/domain.qcow'/> <backingStore type='file'> <format type='qcow2'/> @@ -3054,6 +3054,10 @@ <span class='since'>Since 1.2.8 (QEMU 2.1)</span> </li> <li> + The optional <code>queues</code> attribute specifies the number of + virt queues for virtio-blk. (<span class="since">Since 3.9.0</span>) + </li> + <li> For virtio disks, <a href="#elementsVirtio">Virtio-specific options</a> can also be set. (<span class="since">Since 3.5.0</span>) diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng index bac371e..66b3d70 100644 --- a/docs/schemas/domaincommon.rng +++ b/docs/schemas/domaincommon.rng @@ -1811,6 +1811,11 @@ <optional> <ref name="detect_zeroes"/> </optional> + <optional> + <attribute name='queues'> + <ref name="positiveInteger"/> + </attribute> + </optional> <ref name="virtioOptions"/> <empty/> </element> diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 87192eb..dc1d5b0 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -5113,6 +5113,13 @@ virDomainDiskDefValidate(const virDomainDiskDef *disk) return -1; } + if (disk->queues && disk->bus != VIR_DOMAIN_DISK_BUS_VIRTIO) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", + _("queues attribute in disk driver element is only " + "supported by virtio-blk")); + return -1; + } + return 0; } @@ -8761,6 +8768,15 @@ virDomainDiskDefDriverParseXML(virDomainDiskDefPtr def, } VIR_FREE(tmp); + if ((tmp = virXMLPropString(cur, "queues")) && + virStrToLong_uip(tmp, NULL, 10, &def->queues) < 0) { + virReportError(VIR_ERR_XML_ERROR, + _("'queues' attribute must be positive number: %s"), + tmp); + goto cleanup; + } + VIR_FREE(tmp); + ret = 0; cleanup: @@ -21996,6 +22012,8 @@ virDomainDiskDefFormat(virBufferPtr buf, virBufferAsprintf(&driverBuf, " iothread='%u'", def->iothread); if (def->detect_zeroes) virBufferAsprintf(&driverBuf, " detect_zeroes='%s'", detect_zeroes); + if (def->queues) + virBufferAsprintf(&driverBuf, " queues='%u'", def->queues); virDomainVirtioOptionsFormat(&driverBuf, def->virtio); diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h index 05a035a..28abe2b 100644 --- a/src/conf/domain_conf.h +++ b/src/conf/domain_conf.h @@ -668,6 +668,7 @@ struct _virDomainDiskDef { unsigned int iothread; /* unused = 0, > 0 specific thread # */ int detect_zeroes; /* enum virDomainDiskDetectZeroes */ char *domain_name; /* backend domain name */ + unsigned int queues; virDomainVirtioOptionsPtr virtio; }; diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index 4f141e0..7e5c9cb 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -2083,6 +2083,13 @@ qemuBuildDriveDevStr(const virDomainDef *def, ? "on" : "off"); } + if (disk->queues) { + if (qemuDomainDefValidateDisk(disk, qemuCaps) < 0) + goto error; + else + virBufferAsprintf(&opt, ",num-queues=%u", disk->queues); + } + if (qemuBuildVirtioOptionsStr(&opt, disk->virtio, qemuCaps) < 0) goto error; diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c index b202d02..d435293 100644 --- a/src/qemu/qemu_domain.c +++ b/src/qemu/qemu_domain.c @@ -7569,6 +7569,30 @@ qemuDomainDefValidateDiskLunSource(const virStorageSource *src) } +/** + * qemuDomainDefValidateDisk: + * @disk: definition of disk + * @qemuCaps: qemu capabilities object + * + * Validates whether the num-queues property is valid for disk. + * + * Returns 0 on success; -1 and a libvirt error on error. + */ +int +qemuDomainDefValidateDisk(const virDomainDiskDef *disk, + virQEMUCapsPtr qemuCaps) +{ + if(disk->queues && + !virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_BLK_NUM_QUEUES)) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", + _("num-queues property isn't supported by this " + "QEMU binary")); + return -1; + } + return 0; +} + + int qemuDomainPrepareChannel(virDomainChrDefPtr channel, const char *domainChannelTargetDir) diff --git a/src/qemu/qemu_domain.h b/src/qemu/qemu_domain.h index 1a47396..9632a9a 100644 --- a/src/qemu/qemu_domain.h +++ b/src/qemu/qemu_domain.h @@ -883,6 +883,9 @@ bool qemuDomainVcpuHotplugIsInOrder(virDomainDefPtr def) void qemuDomainVcpuPersistOrder(virDomainDefPtr def) ATTRIBUTE_NONNULL(1); +int qemuDomainDefValidateDisk(const virDomainDiskDef *disk, + virQEMUCapsPtr qemuCaps); + int qemuDomainCheckMonitor(virQEMUDriverPtr driver, virDomainObjPtr vm, qemuDomainAsyncJob asyncJob); diff --git a/tests/qemuxml2argvdata/qemuxml2argv-disk-virtio-drive-queues.args b/tests/qemuxml2argvdata/qemuxml2argv-disk-virtio-drive-queues.args new file mode 100644 index 0000000..5e0ce8b --- /dev/null +++ b/tests/qemuxml2argvdata/qemuxml2argv-disk-virtio-drive-queues.args @@ -0,0 +1,24 @@ +LC_ALL=C \ +PATH=/bin \ +HOME=/home/test \ +USER=test \ +LOGNAME=test \ +QEMU_AUDIO_DRV=none \ +/usr/bin/qemu-system-i686 \ +-name QEMUGuest1 \ +-S \ +-M pc \ +-m 214 \ +-smp 1,sockets=1,cores=1,threads=1 \ +-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \ +-nographic \ +-nodefaults \ +-chardev socket,id=charmonitor,path=/tmp/lib/domain--1-QEMUGuest1/monitor.sock,\ +server,nowait \ +-mon chardev=charmonitor,id=monitor,mode=readline \ +-no-acpi \ +-boot c \ +-usb \ +-drive file=/tmp/data.img,format=raw,if=none,id=drive-virtio-disk0 \ +-device virtio-blk-pci,num-queues=4,bus=pci.0,addr=0x3,drive=drive-virtio-disk0,\ +id=virtio-disk0 diff --git a/tests/qemuxml2argvdata/qemuxml2argv-disk-virtio-drive-queues.xml b/tests/qemuxml2argvdata/qemuxml2argv-disk-virtio-drive-queues.xml new file mode 100644 index 0000000..37885c6 --- /dev/null +++ b/tests/qemuxml2argvdata/qemuxml2argv-disk-virtio-drive-queues.xml @@ -0,0 +1,34 @@ +<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-i686</emulator> + <disk type='file' device='disk'> + <driver name='qemu' type='raw' queues='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'/> + <memballoon model='none'/> + </devices> +</domain> diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c index 7271ea0..a505864 100644 --- a/tests/qemuxml2argvtest.c +++ b/tests/qemuxml2argvtest.c @@ -892,6 +892,8 @@ mymain(void) QEMU_CAPS_VIRTIO_CCW, QEMU_CAPS_VIRTIO_S390); DO_TEST("disk-order", QEMU_CAPS_DRIVE_BOOT, QEMU_CAPS_VIRTIO_BLK_SCSI); + DO_TEST("disk-virtio-drive-queues", + QEMU_CAPS_VIRTIO_BLK_NUM_QUEUES); DO_TEST("disk-drive-boot-disk", QEMU_CAPS_DRIVE_BOOT); DO_TEST("disk-drive-boot-cdrom", diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-disk-virtio-drive-queues.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-disk-virtio-drive-queues.xml new file mode 100644 index 0000000..37885c6 --- /dev/null +++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-disk-virtio-drive-queues.xml @@ -0,0 +1,34 @@ +<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-i686</emulator> + <disk type='file' device='disk'> + <driver name='qemu' type='raw' queues='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'/> + <memballoon model='none'/> + </devices> +</domain> diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c index 2dba360..73489ee 100644 --- a/tests/qemuxml2xmltest.c +++ b/tests/qemuxml2xmltest.c @@ -449,6 +449,7 @@ mymain(void) DO_TEST("disk-usb-device", NONE); DO_TEST("disk-virtio", NONE); DO_TEST("floppy-drive-fat", NONE); + DO_TEST("disk-virtio-drive-queues", QEMU_CAPS_VIRTIO_BLK_NUM_QUEUES); DO_TEST("disk-drive-boot-disk", NONE); DO_TEST("disk-drive-boot-cdrom", NONE); DO_TEST("disk-drive-error-policy-stop", NONE); -- 2.9.2
On Sun, Oct 01, 2017 at 01:15:36AM +0800, Lin Ma wrote:
qemu 2.7.0 introduces multiqueue virtio-blk(commit 2f27059). This patch introduces a new attribute "queues". An example of the XML:
<disk type='file' device='disk'> <driver name='qemu' type='qcow2' queues='4'/>
The corresponding QEMU command line:
-device virtio-blk-pci,scsi=off,num-queues=4,id=virtio-disk0
Signed-off-by: Lin Ma <lma@suse.com> --- docs/formatdomain.html.in | 6 +++- docs/schemas/domaincommon.rng | 5 ++++ src/conf/domain_conf.c | 18 ++++++++++++ src/conf/domain_conf.h | 1 + src/qemu/qemu_command.c | 7 +++++ src/qemu/qemu_domain.c | 24 +++++++++++++++ src/qemu/qemu_domain.h | 3 ++ .../qemuxml2argv-disk-virtio-drive-queues.args | 24 +++++++++++++++ .../qemuxml2argv-disk-virtio-drive-queues.xml | 34 ++++++++++++++++++++++ tests/qemuxml2argvtest.c | 2 ++ .../qemuxml2xmlout-disk-virtio-drive-queues.xml | 34 ++++++++++++++++++++++ tests/qemuxml2xmltest.c | 1 + 12 files changed, 158 insertions(+), 1 deletion(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-virtio-drive-queues.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-virtio-drive-queues.xml create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-disk-virtio-drive-queues.xml
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index 4f141e0..7e5c9cb 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -2083,6 +2083,13 @@ qemuBuildDriveDevStr(const virDomainDef *def, ? "on" : "off"); }
+ if (disk->queues) { + if (qemuDomainDefValidateDisk(disk, qemuCaps) < 0) + goto error;
I thought we already had per-device validation functions that get called when both defining/starting a new domain and on hotplug, but they are in the conf module. I'll just move the error message here and leave the cleanup to future generations.
+ else
else is not required here, since we jumped away in the if clause.
+ virBufferAsprintf(&opt, ",num-queues=%u", disk->queues); + } + if (qemuBuildVirtioOptionsStr(&opt, disk->virtio, qemuCaps) < 0) goto error;
ACK and pushed, with the .args test case rewrapped to pass 'make-syntax-check': --- tests/qemuxml2argvdata/qemuxml2argv-disk-virtio-drive-queues.args 2017-10-04 17:27:17.419307555 +0200 +++ - 2017-10-04 17:43:36.970064719 +0200 @@ -20,5 +20,5 @@ -boot c \ -usb \ -drive file=/tmp/data.img,format=raw,if=none,id=drive-virtio-disk0 \ --device virtio-blk-pci,num-queues=4,bus=pci.0,addr=0x3,drive=drive-virtio-disk0,\ -id=virtio-disk0 +-device virtio-blk-pci,num-queues=4,bus=pci.0,addr=0x3,\ +drive=drive-virtio-disk0,id=virtio-disk0 Incorrect line wrapping in tests/qemuxml2argvdata/qemuxml2argv-disk-virtio-drive-queues.args Use test-wrap-argv.pl to wrap test data files Jan
participants (2)
-
Ján Tomko -
Lin Ma