[libvirt] [PATCH 00/34] Add device addressing and disk controller support
Daniel P. Berrange
berrange at redhat.com
Fri Jan 8 17:43:55 UTC 2010
On Fri, Jan 08, 2010 at 05:22:56PM +0000, Daniel P. Berrange wrote:
> This series is a merge of two previous series I posted
>
> http://www.redhat.com/archives/libvir-list/2009-December/msg00232.html
> http://www.redhat.com/archives/libvir-list/2009-December/msg00392.html
>
> It accomplishes quite a lot of things, having major impact on the QEMU
> driver, hopefully all in a postive way :-)
>
> In particular it does
>
> * Add standard XML syntax for addressing of PCI devices, and disk drives
> * Add support for disk controllers as a managed device in XML
> * Add support for disk controller hotplug/unplug
> * Convert everything over to use QEMU's -device flag where available
> * Add PCI addressing when using -device
> * Introduce a way to give every device a unique 'alias' name in
> the XML format
>
> I can't promise it works perfectly, but i've done quite alot of positive
> testing with it now & believe all the back comptability stuff is working
> right.
Since this is a long series, it might be helpful to see the results in
the XML and command line
Starting with this initial XML config which the application defines
<domain type='kvm' id='2'>
<name>everything</name>
<uuid>c7a1edbd-edaf-9455-926a-d65c36db1809</uuid>
<memory>219200</memory>
<currentMemory>219136</currentMemory>
<vcpu>1</vcpu>
<os>
<type arch='i686' machine='pc-0.11'>hvm</type>
<kernel>/home/berrange/vmlinuz-PAE</kernel>
<initrd>/home/berrange/initrd-PAE.img</initrd>
<boot dev='hd'/>
</os>
<features>
<acpi/>
</features>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<devices>
<emulator>/home/berrange/usr/qemu-0.12/bin/qemu</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/home/berrange/VirtualMachines/plain.qcow'/>
<target dev='vda' bus='virtio'/>
</disk>
<disk type='file' device='cdrom'>
<source file='/home/berrange/gpxe.iso'/>
<target dev='hdc' bus='ide'/>
<readonly/>
</disk>
<disk type='file' device='disk'>
<source file='/home/berrange/output.img'/>
<target dev='sdb' bus='usb'/>
</disk>
<disk type='file' device='disk'>
<source file='/home/berrange/output.img'/>
<target dev='sda' bus='scsi'/>
</disk>
<disk type='file' device='disk'>
<source file='/home/berrange/output.img'/>
<target dev='sdz' bus='scsi'/>
</disk>
<disk type='file' device='disk'>
<source file='/home/berrange/output.img'/>
<target dev='sdaf' bus='scsi'/>
</disk>
<interface type='user'>
<mac address='52:54:00:5b:ef:21'/>
<model type='ne2k_pci'/>
</interface>
<interface type='mcast'>
<mac address='52:54:00:1c:dc:98'/>
<source address='230.0.0.1' port='5558'/>
<model type='virtio'/>
</interface>
<interface type='network'>
<mac address='52:54:00:f7:c5:0e'/>
<source network='default'/>
<target dev='vnet0'/>
<model type='e1000'/>
</interface>
<interface type='user'>
<mac address='52:54:00:56:6c:55'/>
<model type='pcnet'/>
</interface>
<interface type='user'>
<mac address='52:54:00:ca:0d:58'/>
<model type='rtl8139'/>
</interface>
<serial type='pty'>
<source path='/dev/pts/10'/>
<target port='0'/>
</serial>
<parallel type='pty'>
<source path='/dev/pts/17'/>
<target port='0'/>
</parallel>
<console type='pty' tty='/dev/pts/10'>
<source path='/dev/pts/10'/>
<target port='0'/>
</console>
<input type='tablet' bus='usb'/>
<input type='mouse' bus='ps2'/>
<graphics type='vnc' port='5900' autoport='yes'/>
<sound model='ac97'/>
<sound model='es1370'/>
<video>
<model type='cirrus' vram='9216' heads='1'/>
</video>
<hostdev mode='subsystem' type='pci' managed='yes'>
<source>
<address domain='0x0000' bus='0x15' slot='0x00' function='0x0'/>
</source>
</hostdev>
<hostdev mode='subsystem' type='usb' managed='yes'>
<source>
<address bus='4' device='2'/>
</source>
</hostdev>
<watchdog model='i6300esb' action='reset'/>
</devices>
</domain>
With the latest QEMU we now generate command line that looks like this
LC_ALL=C
PATH=/usr/lib/qt-3.3/bin:/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
HOME=/root
USER=root
LOGNAME=root
QEMU_AUDIO_DRV=none
/home/berrange/usr/qemu-0.12/bin/qemu
-S
-M pc-0.11
-enable-kvm
-m 214
-smp 1
-name everything
-uuid c7a1edbd-edaf-9455-926a-d65c36db1809
-nodefaults
-chardev socket,id=monitor,path=/var/lib/libvirt/qemu/everything.monitor,server,nowait
-mon chardev=monitor,mode=readline
-boot c
-kernel /home/berrange/vmlinuz-PAE
-initrd /home/berrange/initrd-PAE.img
-device lsi,id=scsi0,addr=13
-device lsi,id=scsi1,addr=14
-device lsi,id=scsi2,addr=15
-device lsi,id=scsi3,addr=16
-device lsi,id=scsi4,addr=17
-drive file=/home/berrange/VirtualMachines/plain.qcow,if=none,id=drive-virtio-disk0,format=qcow2
-device virtio-blk-pci,addr=4,drive=drive-virtio-disk0,id=virtio-disk0
-drive file=/home/berrange/gpxe.iso,if=none,media=cdrom,id=drive-ide0-1-0
-device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0
-drive file=/home/berrange/output.img,if=none,id=drive-usb-disk1
-device usb-storage,drive=drive-usb-disk1,id=usb-disk1
-drive file=/home/berrange/output.img,if=none,id=drive-scsi0-0-0
-device scsi-disk,bus=scsi0.0,scsi-id=0,drive=drive-scsi0-0-0,id=scsi0-0-0
-drive file=/home/berrange/output.img,if=none,id=drive-scsi3-0-4
-device scsi-disk,bus=scsi3.0,scsi-id=4,drive=drive-scsi3-0-4,id=scsi3-0-4
-drive file=/home/berrange/output.img,if=none,id=drive-scsi4-0-3
-device scsi-disk,bus=scsi4.0,scsi-id=3,drive=drive-scsi4-0-3,id=scsi4-0-3
-netdev user,id=netdev0
-device ne2k_pci,netdev=netdev0,id=ne2k_pci-nic0,mac=52:54:00:5b:ef:21,addr=5
-netdev socket,mcast=230.0.0.1:5558,id=netdev1
-device virtio-net-pci,netdev=netdev1,id=virtio-nic1,mac=52:54:00:1c:dc:98,addr=6
-netdev tap,fd=21,id=netdev2
-device e1000,netdev=netdev2,id=e1000-nic2,mac=52:54:00:f7:c5:0e,addr=7
-netdev user,id=netdev3
-device pcnet,netdev=netdev3,id=pcnet-nic3,mac=52:54:00:56:6c:55,addr=8
-netdev user,id=netdev4
-device rtl8139,netdev=netdev4,id=rtl8139-nic4,mac=52:54:00:ca:0d:58,addr=9
-chardev pty,id=serial0
-device isa-serial,chardev=serial0
-chardev pty,id=parallel0
-device isa-parallel,chardev=parallel0
-usb
-device usb-tablet,id=input0
-vnc 127.0.0.1:0
-vga cirrus
-device AC97,id=sound0,addr=10
-device ES1370,id=sound1,addr=11
-device i6300esb,id=watchdog0,addr=18
-watchdog-action reset
-device pci-assign,host=15:00.0,id=hostpci0,addr=12
-device usb-host,hostbus=004,hostaddr=002,id=hostusb1
If you query the XML dump while the VM is running, you'll see the extra
address information, alias names, and disk controller elements present.
eg like this
<domain type='kvm' id='2'>
<name>everything</name>
<uuid>c7a1edbd-edaf-9455-926a-d65c36db1809</uuid>
<memory>219200</memory>
<currentMemory>219136</currentMemory>
<vcpu>1</vcpu>
<os>
<type arch='i686' machine='pc-0.11'>hvm</type>
<kernel>/home/berrange/vmlinuz-PAE</kernel>
<initrd>/home/berrange/initrd-PAE.img</initrd>
<boot dev='hd'/>
</os>
<features>
<acpi/>
</features>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<devices>
<emulator>/home/berrange/usr/qemu-0.12/bin/qemu</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/home/berrange/VirtualMachines/plain.qcow'/>
<target dev='vda' bus='virtio'/>
<alias name='virtio-disk0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</disk>
<disk type='file' device='cdrom'>
<source file='/home/berrange/gpxe.iso'/>
<target dev='hdc' bus='ide'/>
<readonly/>
<alias name='ide0-1-0'/>
<address type='drive' controller='0' bus='1' unit='0'/>
</disk>
<disk type='file' device='disk'>
<source file='/home/berrange/output.img'/>
<target dev='sdb' bus='usb'/>
<alias name='usb-disk1'/>
</disk>
<disk type='file' device='disk'>
<source file='/home/berrange/output.img'/>
<target dev='sda' bus='scsi'/>
<alias name='scsi0-0-0'/>
<address type='drive' controller='0' bus='0' unit='0'/>
</disk>
<disk type='file' device='disk'>
<source file='/home/berrange/output.img'/>
<target dev='sdz' bus='scsi'/>
<alias name='scsi3-0-4'/>
<address type='drive' controller='3' bus='0' unit='4'/>
</disk>
<disk type='file' device='disk'>
<source file='/home/berrange/output.img'/>
<target dev='sdaf' bus='scsi'/>
<alias name='scsi4-0-3'/>
<address type='drive' controller='4' bus='0' unit='3'/>
</disk>
<controller type='ide' index='0'>
<alias name='ide0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
</controller>
<controller type='scsi' index='0'>
<alias name='scsi1'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x0c' function='0x0'/>
</controller>
<controller type='scsi' index='1'>
<alias name='scsi2'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x0d' function='0x0'/>
</controller>
<controller type='scsi' index='2'>
<alias name='scsi3'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x0e' function='0x0'/>
</controller>
<controller type='scsi' index='3'>
<alias name='scsi4'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x0f' function='0x0'/>
</controller>
<controller type='scsi' index='4'>
<alias name='scsi5'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x10' function='0x0'/>
</controller>
<interface type='user'>
<mac address='52:54:00:5b:ef:21'/>
<model type='ne2k_pci'/>
<alias name='ne2k_pci-nic0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
</interface>
<interface type='mcast'>
<mac address='52:54:00:1c:dc:98'/>
<source address='230.0.0.1' port='5558'/>
<model type='virtio'/>
<alias name='virtio-nic1'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
</interface>
<interface type='network'>
<mac address='52:54:00:f7:c5:0e'/>
<source network='default'/>
<target dev='vnet0'/>
<model type='e1000'/>
<alias name='e1000-nic2'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
</interface>
<interface type='user'>
<mac address='52:54:00:56:6c:55'/>
<model type='pcnet'/>
<alias name='pcnet-nic3'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
</interface>
<interface type='user'>
<mac address='52:54:00:ca:0d:58'/>
<model type='rtl8139'/>
<alias name='rtl8139-nic4'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>
</interface>
<serial type='pty'>
<source path='/dev/pts/10'/>
<target port='0'/>
<alias name='serial0'/>
</serial>
<parallel type='pty'>
<source path='/dev/pts/17'/>
<target port='0'/>
<alias name='parallel0'/>
</parallel>
<console type='pty' tty='/dev/pts/10'>
<source path='/dev/pts/10'/>
<target port='0'/>
<alias name='serial0'/>
</console>
<input type='tablet' bus='usb'/>
<input type='mouse' bus='ps2'/>
<graphics type='vnc' port='5900' autoport='yes'/>
<sound model='ac97'>
<alias name='sound0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x0a' function='0x0'/>
</sound>
<sound model='es1370'>
<alias name='sound1'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x0b' function='0x0'/>
</sound>
<video>
<model type='cirrus' vram='9216' heads='1'/>
<alias name='video0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</video>
<hostdev mode='subsystem' type='pci' managed='yes'>
<source>
<address domain='0x0000' bus='0x15' slot='0x00' function='0x0'/>
</source>
<address type='pci' domain='0x0000' bus='0x00' slot='0x12' function='0x0'/>
<alias name='hostpci0'/>
</hostdev>
<hostdev mode='subsystem' type='usb' managed='yes'>
<source>
<address bus='4' device='2'/>
</source>
<alias name='hostusb1'/>
</hostdev>
<watchdog model='i6300esb' action='reset'>
<alias name='watchdog0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x11' function='0x0'/>
</watchdog>
</devices>
<seclabel type='dynamic' model='selinux'>
<label>system_u:system_r:svirt_t:s0:c133,c417</label>
<imagelabel>system_u:object_r:svirt_image_t:s0:c133,c417</imagelabel>
</seclabel>
</domain>
Regards,
Daniel
--
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