centos6.5_kvm_commands 常用命令

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快照：

qemu-img snapshot -c snp01_init server_01.qcow2 #-c create

qemu-img snapshot -l server_01.qcow2

qemu-img snapshot -d snp01_init server_01.qcow2

快照恢复

# qemu-imgsnapshot -a s1 disk.qcow2

方法二：利用virsh管理快照
vim snp.xml
<domainsnapshot>

<name>snapshot01</name> //快照名

<description>Snapshot of OS install and updates</description>//描述

<disks>

<disk name='/usr/local/vms/server_06/server_06.qcow2'> //虚拟机镜像的绝对路径

</disk>

</disks>

</domainsnapshot>

#virsh
# snapshot-create server_02 /usr/local/vms/server_02/snp_02.xml

# snapshot-list server_02

# snapshot-delete server_02 snapshot01

给VM添加data分区

#ln -s /dev/vg_sdb/server_02_data /usr/local/vms/server_02/
#virsh attach-disk server_01 /usr/local/vms/server_01/server_01_data vdb

1,pvcreate
#fdisk /dev/sdb

add lvm partition

#pvcreate pv_sdb /dev/sdb1

test:

#pvdisplay

2,vgcreate

#vgcreate vg_sdb /dev/sdb1

3,lvcreate

# lvcreate -L 150G -n server_01_data vg_sdb

Logical volume "server_01_data" created

4,create vm img
#qemu-img create -f qcow2 server_01.qcow2 50G

# qemu-img info server_01.qcow2

image: server_01.qcow2

file format: qcow2

virtual size: 50G (53687091200 bytes)

disk size: 136K

cluster_size: 65536

5,create vm

#virsh create server_01.xml

6,stop iptables

#service iptables stop

#chkconfig iptables off

# chkconfig iptables --list

iptables
0:off 1:off2:on3:on
4:on5:on6:off

lvremove:

[root@ajinga-kvm vms]# ls /dev/vg_sdb/

server_01_data server_01_img

[root@ajinga-kvm vms]# lvremove /dev/vg_sdb/server_01_img

Do you really want to remove active logical volume server_01_img? [y/n]: y

Logical volume "server_01_img" successfully removed

vm clone:

#virt-clone --original server_01 --name server_06 --file /usr/local/vms/server_06/server_06.qcow2 --file /usr/local/vms/server_06/server_06_data

结果：在/usr/local/vms/server_06/ 下生成 server_06.qcow2 同时virsh list --all：

virsh # list --all

Id Name State

----------------------------------------------------

12 server_02 running

- server_01 shut off

virsh edit server_02

修改：port 为没在使用中的

<graphics type='vnc' port='5901' ....