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Copy pathLibvirt-command-for-virtio-scsi.txt
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Libvirt-command-for-virtio-scsi.txt
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1.Attach a scsi-block/scsi-hd/scsi-cd/scsi-generic device.
1.1.scsi-block device.
e.g1:...-drive file=/dev/disk/by-path/ip-10.66.33.253:3260-iscsi-iqn.2014.sluo.com:iscsi.storage.1-lun-1,if=none,id=drive-scsi0-0-0-1,format=raw,cache=none -device scsi-block,bus=scsi0.0,channel=0,scsi-id=0,lun=1,drive=drive-scsi0-0-0-1,id=scsi0-0-0-1
...
<disk type='block' device='lun' >
<driver name='qemu' type='raw' cache='none'/>
<source dev='/dev/disk/by-path/ip-10.66.33.253:3260-iscsi-iqn.2014.sluo.com:iscsi.storage.1-lun-1'/>
<target dev='sdb' bus='scsi'/>
<alias name='scsi0-0-0-1'/>
<address type='drive' controller='0' bus='0' target='0' unit='1'/>
</disk>
<controller type='scsi' index='0' model='virtio-scsi'>
<alias name='scsi0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
</controller>
...
1.2.scsi-hd device.
e.g2:...-device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x7 -drive file=/home/my-data-disk.raw,if=none,id=drive-scsi0-0-0-1,format=raw,cache=none -device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=1,drive=drive-scsi0-0-0-1,id=scsi0-0-0-1
...
<disk type='file' device='disk' >
<driver name='qemu' type='raw' cache='none'/>
<source file='/home/my-data-disk.raw'/>
<target dev='sdb' bus='scsi'/>
<alias name='scsi0-0-0-1'/>
<address type='drive' controller='0' bus='0' target='0' unit='1'/>
</disk>
<controller type='scsi' index='0' model='virtio-scsi'>
<alias name='scsi0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
</controller>
...
1.3.scsi-cd device.
e.g3:...-device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x7 -drive file=/home/RHEL-7.0-20131030.1-Server-x86_64-dvd1.iso,if=none,id=drive-scsi0-0-0-1,readonly=on,format=raw,cache=none -device scsi-cd,bus=scsi0.0,channel=0,scsi-id=0,lun=1,drive=drive-scsi0-0-0-1,id=scsi0-0-0-1
...
<disk type='file' device='cdrom' >
<driver name='qemu' type='raw' cache='none'/>
<source file='/home/RHEL-7.0-20131030.1-Server-x86_64-dvd1.iso'/>
<target dev='hdb' bus='scsi'/>
<alias name='scsi0-0-0-1'/>
<address type='drive' controller='0' bus='0' target='0' unit='1'/>
</disk>
<controller type='scsi' index='0' model='virtio-scsi'>
<alias name='scsi0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
</controller>
...
1.4.scsi-generic device.
# sg_map | grep /dev/sdb
/dev/sg3 /dev/sdb
# virsh nodedev-list --tree
...
+- scsi_host6
|
+- scsi_target6_0_0
|
+- scsi_6_0_0_0
| |
| +- scsi_generic_sg2
|
+- scsi_6_0_0_1
|
+- block_sdb_1IET_00060001
+- scsi_generic_sg3
...
e.g4:...-drive file=/dev/sg3,if=none,id=drive-hostdev0,readonly=on -device scsi-generic,bus=scsi0.0,channel=0,scsi-id=0,lun=0,drive=drive-hostdev0,id=hostdev0
...
</controller>
<hostdev mode='subsystem' type='scsi'>
<source>
<adapter name='scsi_host6'/>
<address type='scsi' bus='0' target='0' unit='1'/>
</source>
<readonly/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</hostdev>
<controller type='scsi' index='0' model='virtio-scsi'>
<alias name='scsi0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
</controller>
...
2.Attach a virtio-blk device.
e.g:...-drive file=/home/my-data-disk.raw,if=none,id=drive-virtio-disk0,format=raw -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x5,drive=drive-virtio-disk0,id=virtio-disk0
...
<disk type='file' device='disk'>
<driver name='qemu' type='raw'/>
<source file='/home/my-data-disk.raw'/>
<target dev='vda' bus='virtio'/>
<alias name='virtio-disk0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
</disk>
...
3.Attach a ide-cd/ide-hd device.
3.1.ide-hd device.
e.g1:...-drive file=/home/my-data-disk.raw,if=none,id=drive-ide0-0-1,format=raw,cache=none -device ide-hd,bus=ide.0,unit=1,drive=drive-ide0-0-1,id=ide0-0-1
...
<disk type='file' device='disk'>
<driver name='qemu' type='raw' cache='none'/>
<source file='/home/my-data-disk.raw'/>
<target dev='hdb' bus='ide'/>
<address type='drive' controller='0' bus='0' target='0' unit='1'/>
</disk>
<controller type='ide' index='1'>
<alias name='ide1'/>
</controller>
...
3.2.ide-cd device.
e.g2:...-drive file=/home/RHEL-7.0-20140507.0-Server-x86_64-dvd1.iso,if=none,id=drive-ide0-0-1,readonly=on,format=raw,cache=none -device ide-cd,bus=ide.0,unit=1,drive=drive-ide0-0-1,id=ide0-0-1
...
<disk type='file' device='cdrom'>
<driver name='qemu' type='raw' cache='none'/>
<source file='/home/RHEL-7.0-20140507.0-Server-x86_64-dvd1.iso'/>
<target dev='hdb' bus='ide'/>
<address type='drive' controller='0' bus='0' target='0' unit='1'/>
</disk>
<controller type='ide' index='1'>
<alias name='ide1'/>
</controller>
...
4.Attach a ahci-cd/ahci-hd device.
4.1.ahci-hd device.
e.g1:...-device ahci,id=ahci0,bus=pci.0,addr=0x5 -drive file=/home/my-data-disk.raw,if=none,id=drive-sata0-0-0,format=raw -device ide-hd,bus=ahci0.0,drive=drive-sata0-0-0,id=sata0-0-0
...
<disk type='file' device='disk'>
<driver name='qemu' type='raw'/>
<source file='/home/my-data-disk.raw'/>
<target dev='sdb' bus='sata'/>
<alias name='ahci-disk0'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
<controller type='sata' index='0'>
<alias name='sata0'/>
</controller>
...
4.2.ahci-cd device.
e.g2:...-device ahci,id=ahci0,bus=pci.0,addr=0x5 -drive file=/home/RHEL-7.0-20140507.0-Server-x86_64-dvd1.iso,if=none,media=cdrom,id=drive-sata0-0-0,readonly=on,format=raw -device ide-cd,bus=ahci0.0,drive=drive-sata0-0-0,id=sata0-0-0
...
<disk type='file' device='cdrom'>
<driver name='qemu' type='raw'/>
<source file='/home/RHEL-7.0-20140507.0-Server-x86_64-dvd1.iso'/>
<target dev='sdb' bus='sata'/>
<alias name='ahci-disk0'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
<controller type='sata' index='0'>
<alias name='sata0'/>
</controller>
...
5.Attach/Detach a raw format disk device from XML file to guest.
5.1.start a domain.
# virsh create scsi-block-testing.xml
Domain scsi-block-testing created from scsi-block-testing.xml
5.2.create a disk desription file as following XML.
# cat disk-scsi-block.xml
<disk type='block' device='lun' >
<driver name='qemu' type='raw' cache='none'/>
<source dev='/dev/disk/by-path/ip-10.66.33.253:3260-iscsi-iqn.2014.sluo.com:iscsi.storage.1-lun-1'/>
<target dev='sdb' bus='scsi'/>
<alias name='scsi0-0-0-1'/>
<address type='drive' controller='0' bus='0' target='0' unit='1'/>
</disk>
5.3.# virsh attach-device scsi-block-testing disk-scsi-block.xml
Device attached successfully
5.4.# # virsh detach-disk scsi-block-testing sdb
Disk detached successfully
6.Attach/Detach a raw format disk device to guest
6.1.start a domain.
# virsh create scsi-block-testing.xml
Domain scsi-block-testing created from scsi-block-testing.xml
6.2.# virsh attach-disk scsi-block-testing /dev/disk/by-path/ip-10.66.33.253:3260-iscsi-iqn.2014.sluo.com:iscsi.storage.1-lun-1 sdb --type lun
Disk attached successfully
6.3.# virsh detach-disk scsi-block-testing sdb
Disk detached successfully
7.Migration with VM via virsh.
# virsh migrate --live $domain_name qemu+ssh://$dst_ip/system --verbose
migrate-setmaxdowntime set maximum tolerable downtime
migrate-compcache get/set compression cache size
migrate-setspeed Set the maximum migration bandwidth
migrate-getspeed Get the maximum migration bandwidth
8.Network device(rtl8139/e1000/virtio-net-pci).
e.g1:...-netdev tap,fd=23,id=hostnet0 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=0a:01:38:b6:40:24,bus=pci.0,addr=0x3
...
<interface type='network'>
<mac address='0a:01:38:b6:40:24'/>
<source network='default'/>
<target dev='vnet0'/>
<model type='virtio-net-pci'/>
<alias name='net0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
...
9.USB device.
# lsusb | grep CompUSA
Bus 002 Device 003: ID 1516:6221 CompUSA
# virsh attach-device $domain_name usb-disk.xml
e.g:...-device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -device usb-host,hostbus=2,hostaddr=3,id=hostdev0
...
<hostdev mode='subsystem' type='usb' managed='yes'>
<source>
<vendor id='0x1516'/>
<product id='0x6221'/>
<address bus='2' device='3'/>
</source>
</hostdev>
...
<controller type='usb' index='0' model='piix3-uhci'>
<alias name='usb0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
</controller>
<controller type='usb' index='1' model='ich9-uhci1'>
<alias name='usb1'/>
<master startport='0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
</controller>
<controller type='usb' index='1' model='ich9-uhci2'>
<alias name='usb2'/>
<master startport='2'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
</controller>
<controller type='usb' index='1' model='ich9-uhci3'>
<alias name='usb3'/>
<master startport='4'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
</controller>
...
<controller type='usb' index='1' model='ich9-ehci1'>
<alias name='usb4'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>
</controller>
...