kvm command line
KVM command linemsn:jieshiyeskey@hotmail.com
1.克隆虚拟机
# virt-clone --original rhel_61_64 --nameclone-vm --file /home/storage/clone-vm.img
ERROR 必须暂停或者关闭有要克隆设备的域。
# virt-clone --original rhel_61_64 --nameclone-vm --file /home/storage/clone-vm.img
正在分配'clone-vm.img' | 20GB 02:16
Clone 'clone-vm' created successfully.
# ll /home/storage/
总用量 41946072
-rw------- 1 qemu qemu 21474836480 8月 31 16:23clone-vm.img
-rw------- 1 qemu qemu 21474836480 8月 31 16:21rhel_61_64.img
2. 定义一个新的存储池
# mkdir /home/mystorage
# cat /etc/libvirt/mystorage.xml
<pool type='dir'>
<name>mystorage</name>
<capacity>0</capacity>
<allocation>0</allocation>
<available>0</available>
<source>
</source>
<target>
<path>/home/mystorage</path>
<permissions>
<mode>0700</mode>
<owner>-1</owner>
<group>-1</group>
</permissions>
</target>
</pool>
# virsh pool-define/etc/libvirt/mystorage.xml
在 mystorage 中定义池 /etc/libvirt/mystorage.xml
# virsh pool-start mystorage
池 mystorage 已启动
# virsh pool-start mystorage
池 mystorage 已启动
# show pool-list
-bash: show: command not found
# virsh pool-autostart mystorage
池 mystorage 标记为自动启动
# virsh pool-list
名称 状态 自动开始
-----------------------------------------
default 活动 yes
markgeng-storage 活动 yes
mystorage 活动 yes
# virsh pool-info mystorage
名称： mystorage
UUID: 1830edad-9586-7472-fce0-d42a4576fccb
状态： running
Persistent: yes
自动启动： yes
容量： 857.52GB
分配： 46.75GB
可用： 810.77GB
3. virsh命令
3.1. 启动虚拟机
# virsh start clone-vm #启动虚拟机clone-vm
域 clone-vm 已开始
# virsh start jieshi_os_05 --console
域 jieshi_os_05 已开始
连接到域 jieshi_os_05
换码符为 ^]
Ÿ
3.2 Stop Virtual Machine
# virsh shutdown jieshi_os_05
域 jieshi_os_05 被关闭
# virsh destroy jieshi_os_04
域 jieshi_os_04 被删除
3.3. Set auto-start for Virtual Machines
# virsh autostart jieshi_os_05
域 jieshi_os_05标记为自动开始
# virsh autostart --disable jieshi_os_05
域 jieshi_os_05取消标记为自动开始
3.4 List all Virtual Machines
# virsh list
Id名称 状态
----------------------------------
8jieshi_os_05 running
# virsh list --all
Id名称 状态
----------------------------------
8jieshi_os_05 running
-clone-vm 关闭
-jieshi_os_01 关闭
-jieshi_os_02 关闭
-jieshi_os_03 关闭
-jieshi_os_04 关闭
4. enable vhost-net
# lsmod |grep vhost
vhost_net 29524 1
macvtap 7867 1 vhost_net
tun 16953 3 vhost_net
# ps -ef |grep vhost
qemu 10613 110 17:44? 00:00:38/usr/libexec/qemu-kvm -S -M rhel6.1.0 -enable-kvm -m 1024-smp 2,sockets=2,cores=1,threads=1 -name jieshi_os_05 -uuid1d63a593-ee47-1197-b3e7-fdea78988b50 -nodefconfig -nodefaults-chardevsocket,id=charmonitor,path=/var/lib/libvirt/qemu/jieshi_os_05.monitor,server,nowait-monchardev=charmonitor,id=monitor,mode=control -rtc base=utc-boot order=c,menu=off -drivefile=/home/storage/jieshi_os_05.img,if=none,id=drive-virtio-disk0,format=raw,cache=none,aio=threads-devicevirtio-blk-pci,bus=pci.0,addr=0x5,drive=drive-virtio-disk0,id=virtio-disk0-driveif=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw-device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0-netdev tap,fd=27,id=hostnet0,vhost=on,vhostfd=28 -devicevirtio-net-pci,netdev=hostnet0,id=net0,mac=00:16:36:3a:cc:0c,bus=pci.0,addr=0x3-chardevpty,id=charserial0 -deviceisa-serial,chardev=charserial0,id=serial0 -usb -deviceusb-tablet,id=input0 -vnc 127.0.0.1:0 -vga cirrus -deviceintel-hda,id=sound0,bus=pci.0,addr=0x4 -devicehda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -devicevirtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6
root 10633 2 0 17:44? 00:00:00
root 11104 6717 0 17:51pts/2 00:00:00 grep vhost
5.virt-top
# rpm -qa |grep virt-top
virt-top-1.0.4-3.8.el6.x86_64
# virt-top
# show CPU status to push "1" key
# show network status to push "2" key
#show block devices status to push “3” key
#To push “h”key
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