qemu-img管理虚拟机

1. 查看正在运行的虚拟机

[root@idca-vm02 ~]# virsh list

Id 名称状态

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

2 idca-bankccb-b2c-45 running

4 idca-bankicbc-42-clone running

6 idca_rhel5_con29_6.29 running

7 idca_w03_bkccb_b2b_101 running

10 idca_w03_bkicbc_b2b_102 running

16 idca-bankcncb-44 running

18 idca_w03_bkcmb_b2b_105 running

20 idca_w03_bkpab_87 running

32 idca_w03_bkcomm_b2b_103 running

34 idca-bankhxb-43 running

38 idca_rhel5_con23_6.23_new running

43 idca_w03_bkpab_dk_6.88 running

2. 查看所有虚拟机

[root@idca-vm02 ~]# virsh list --all

Id 名称状态

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

2 idca-bankccb-b2c-45 running

4 idca-bankicbc-42-clone running

6 idca_rhel5_con29_6.29 running

7 idca_w03_bkccb_b2b_101 running

10 idca_w03_bkicbc_b2b_102 running

16 idca-bankcncb-44 running

18 idca_w03_bkcmb_b2b_105 running

20 idca_w03_bkpab_87 running

32 idca_w03_bkcomm_b2b_103 running

34 idca-bankhxb-43 running

38 idca_rhel5_con23_6.23_new running

43 idca_w03_bkpab_dk_6.88 running

- idca_rhel5_con23_6.23 关闭

- idca_w03_mod 关闭

3.编辑某个域的 XML 配置

virsh edit idca-bankcncb-44

xml文件内容如下：

[root@idca-vm02 ~]# virsh edit idca-bankcncb-44

<name>idca-bankcncb-44</name>

<uuid>17d9c1a2-a34d-6b7a-88ff-e96412bbdda5</uuid>

<os>

</os>

<name>idca-bankcncb-44</name>

<uuid>17d9c1a2-a34d-6b7a-88ff-e96412bbdda5</uuid>

<os>

</os>

<acpi/>

<apic/>

<pae/>

</features>

<on_poweroff>destroy</on_poweroff>

<on_reboot>restart</on_reboot>

<on_crash>restart</on_crash>

<emulator>/usr/libexec/qemu-kvm</emulator>

</disk>

</disk>

</controller>

</controller>

</interface>

</serial>

</console>

3. 开启、关闭、挂起、删除一个域

virsh start idca-bankhxb-43

virsh shutdown idca-bankhxb-43

virsh suspend idca-bankhxb-43

virsh destrory(stop) idca-bankhxb-43

4.镜像格式转换

qemu-img convert -O raw idca-bankcncb-62.qcow2 idca-bankcncb-62.img

5.virsh克隆虚拟机

virt-clone -o idca-bankccb-b2c-45 -n idca-bankccb-b2c-45_20170515bak -f ./idca-bankccb-b2c-45_20170515bak.img

参考：http://www.cnblogs.com/beanmoon/p/4673525.html

6.virsh命令帮助

[root@idca-vm02 ~]# virsh help

Grouped commands:

Domain Management (help keyword 'domain'):

attach-device 从一个XML文件附加装置

attach-disk 附加磁盘设备

attach-interface 获得网络界面

autostart 自动开始一个域

blkdeviotune Set or query a block device I/O tuning parameters.

blkiotune Get or set blkio parameters

blockcommit Start a block commit operation.

blockcopy Start a block copy operation.

blockjob Manage active block operations

blockpull Populate a disk from its backing image.

blockresize Resize block device of domain.

change-media Change media of CD or floppy drive

console 连接到客户会话

cpu-baseline compute baseline CPU

cpu-compare compare host CPU with a CPU described by an XML file

cpu-stats show domain cpu statistics

create 从一个 XML 文件创建一个域

define 从一个 XML 文件定义（但不开始）一个域

desc show or set domain's description or title

destroy destroy (stop) a domain

detach-device 从一个 XML 文件分离设备

detach-disk 分离磁盘设备

detach-interface 分离网络界面

domdisplay domain display connection URI

domhostname print the domain's hostname

domid 把一个域名或 UUID 转换为域 id

domif-setlink set link state of a virtual interface

domiftune get/set parameters of a virtual interface

domjobabort abort active domain job

domjobinfo domain job information

domname 将域 id 或 UUID 转换为域名

dompmsuspend suspend a domain gracefully using power management functions

dompmwakeup wakeup a domain from pmsuspended state

domuuid 把一个域名或 id 转换为域 UUID

domxml-from-native Convert native config to domain XML

domxml-to-native Convert domain XML to native config

dump 把一个域的内核 dump 到一个文件中以方便分析

dumpxml XML 中的域信息

edit 编辑某个域的 XML 配置

inject-nmi Inject NMI to the guest

send-key Send keycodes to the guest

managedsave managed save of a domain state

managedsave-remove Remove managed save of a domain

maxvcpus connection vcpu maximum

memtune Get or set memory parameters

migrate 将域迁移到另一个主机中

migrate-setmaxdowntime set maximum tolerable downtime

migrate-setspeed Set the maximum migration bandwidth

migrate-getspeed Get the maximum migration bandwidth

numatune Get or set numa parameters

reboot 重新启动一个域

reset reset a domain

restore 从一个存在一个文件中的状态恢复一个域

resume 重新恢复一个域

save 把一个域的状态保存到一个文件

save-image-define redefine the XML for a domain's saved state file

save-image-dumpxml saved state domain information in XML

save-image-edit edit XML for a domain's saved state file

schedinfo 显示/设置日程安排变量

screenshot take a screenshot of a current domain console and store it into a file

setmaxmem 改变最大内存限制值

setmem 改变内存的分配

setvcpus 改变虚拟 CPU 的号

shutdown 关闭一个域

start 开始一个（以前定义的）非活跃的域

suspend 挂起一个域

ttyconsole tty 控制台

undefine undefine a domain

update-device update device from an XML file

vcpucount domain vcpu counts

vcpuinfo detailed domain vcpu information

vcpupin control or query domain vcpu affinity

emulatorpin control or query domain emulator affinity

vncdisplay vnc 显示

Domain Monitoring (help keyword 'monitor'):

domblkerror Show errors on block devices

domblkinfo domain block device size information

domblklist list all domain blocks

domblkstat 获得域设备块状态

domcontrol domain control interface state

domif-getlink get link state of a virtual interface

domiflist list all domain virtual interfaces

domifstat 获得域网络接口状态

dominfo 域信息

dommemstat get memory statistics for a domain

domstate 域状态

list 列出域

Host and Hypervisor (help keyword 'host'):

capabilities 性能

freecell NUMA可用内存

hostname 打印管理程序主机名

node-memory-tune Get or set node memory parameters

nodecpustats Prints cpu stats of the node.

nodeinfo 节点信息

nodememstats Prints memory stats of the node.

nodesuspend suspend the host node for a given time duration

qemu-attach QEMU Attach

qemu-monitor-command QEMU Monitor Command

qemu-agent-command QEMU Guest Agent Command

sysinfo print the hypervisor sysinfo

uri 打印管理程序典型的URI

version 显示版本

Interface (help keyword 'interface'):

iface-begin create a snapshot of current interfaces settings, which can be later committed (iface-commit) or restored (iface-rollback)

iface-bridge create a bridge device and attach an existing network device to it

iface-commit commit changes made since iface-begin and free restore point

iface-define define (but don't start) a physical host interface from an XML file

iface-destroy destroy a physical host interface (disable it / "if-down")

iface-dumpxml interface information in XML

iface-edit edit XML configuration for a physical host interface

iface-list list physical host interfaces

iface-mac convert an interface name to interface MAC address

iface-name convert an interface MAC address to interface name

iface-rollback rollback to previous saved configuration created via iface-begin

iface-start start a physical host interface (enable it / "if-up")

iface-unbridge undefine a bridge device after detaching its slave device

iface-undefine undefine a physical host interface (remove it from configuration)

Network Filter (help keyword 'filter'):

nwfilter-define define or update a network filter from an XML file

nwfilter-dumpxml network filter information in XML

nwfilter-edit edit XML configuration for a network filter

nwfilter-list list network filters

nwfilter-undefine undefine a network filter

Networking (help keyword 'network'):

net-autostart 自动开始网络

net-create 从一个 XML 文件创建一个网络

net-define 从一个 XML 文件定义(但不开始)一个网络

net-destroy destroy (stop) a network

net-dumpxml XML 中的网络信息

net-edit 为网络编辑 XML 配置

net-info network information

net-list 列出网络

net-name 把一个网络UUID 转换为网络名

net-start 开始一个(以前定义的)不活跃的网络

net-undefine 取消定义一个非活跃的网络

net-update update parts of an existing network's configuration

net-uuid 把一个网络名转换为网络UUID

Node Device (help keyword 'nodedev'):

nodedev-create create a device defined by an XML file on the node

nodedev-destroy destroy (stop) a device on the node

nodedev-detach detach node device from its device driver

nodedev-dumpxml XML 中的节点设备详情

nodedev-list 这台主机中中的枚举设备

nodedev-reattach reattach node device to its device driver

nodedev-reset 重置节点设备

Secret (help keyword 'secret'):

secret-define define or modify a secret from an XML file

secret-dumpxml secret attributes in XML

secret-get-value Output a secret value

secret-list list secrets

secret-set-value set a secret value

secret-undefine undefine a secret

Snapshot (help keyword 'snapshot'):

snapshot-create Create a snapshot from XML

snapshot-create-as Create a snapshot from a set of args

snapshot-current Get or set the current snapshot

snapshot-delete Delete a domain snapshot

snapshot-dumpxml Dump XML for a domain snapshot

snapshot-edit edit XML for a snapshot

snapshot-info snapshot information

snapshot-list List snapshots for a domain

snapshot-parent Get the name of the parent of a snapshot

snapshot-revert Revert a domain to a snapshot

Storage Pool (help keyword 'pool'):

find-storage-pool-sources-as 找到潜在存储池源

find-storage-pool-sources 发现潜在存储池源

pool-autostart 自动启动某个池

pool-build 建立池

pool-create-as 从一组变量中创建一个池

pool-create 从一个 XML 文件中创建一个池

pool-define-as 在一组变量中定义池

pool-define 在一个 XML 文件中定义（但不启动）一个池

pool-delete 删除池

pool-destroy destroy (stop) a pool

pool-dumpxml XML 中的池信息

pool-edit 为存储池编辑 XML 配置

pool-info 存储池信息

pool-list 列出池

pool-name 将池 UUID 转换为池名称

pool-refresh 刷新池

pool-start 启动一个（以前定义的）非活跃的池

pool-undefine 取消定义一个不活跃的池

pool-uuid 把一个池名称转换为池 UUID

Storage Volume (help keyword 'volume'):

vol-clone clone a volume.

vol-create-as 从一组变量中创建卷

vol-create 从一个 XML 文件创建一个卷

vol-create-from create a vol, using another volume as input

vol-delete 删除卷

vol-download Download a volume to a file

vol-dumpxml XML 中的卷信息

vol-info 存储卷信息

vol-key returns the volume key for a given volume name or path

vol-list 列出卷

vol-name returns the volume name for a given volume key or path

vol-path returns the volume path for a given volume name or key

vol-pool returns the storage pool for a given volume key or path

vol-resize resize a vol

vol-upload upload a file into a volume

vol-wipe wipe a vol

Virsh itself (help keyword 'virsh'):

cd change the current directory

connect 连接（重新连接）到 hypervisor

echo echo arguments

exit 退出这个非交互式终端

help 打印帮助

pwd print the current directory

quit 退出这个非交互式终端

参考

# http://blog.csdn.net/bravezhe/article/details/8461386

#kvm搭建http://blog.csdn.net/bravezhe/article/details/8461700

#虚拟机修改名字http://blog.sina.com.cn/s/blog_5d867af10101c3by.html