You can indeed confirm from this output that the device /dev/vdb has been detached Last login: Sat Mar 18 01:52:33 2017 from gateway To detach above volume test_vol2 from the vm test: $ sudo virsh detach-disk -domain test -persistent -live -target vdb In case you would like to shutdown all running domains, just issue the command below: for i in `sudo virsh list | grep running | awk '-disk2.qcow2 \ You can do a forceful shutdown of active domain using the command: $ sudo virsh destroy test Virsh stop all running vms To shutdown a running vm gracefully use: $ sudo virsh shutdown test To disable autostart feature for a vm: $ sudo virsh autostart -disable test
Keep an eye on the option Autostart: enable. To set a vm to start automatically on system startup, do: $ sudo virsh autostart test We’re going to start test domain displayed above: $ sudo virsh start test This is an example on how to use virsh command to start a guest virtual machine. Scroll down until section and modify values for the line below: We’ve changed the name of the domain from centos-8.2 to apacheserver01 Virsh change domain boot diskĮdit the domain by passing its name: $ sudo virsh edit domain $ sudo virsh domrename centos-8.2 apacheserver01 List available domains $ sudo virsh list -all Syntax: virsh domrename currentname newname To list only active domains with virsh command, use: $ sudo virsh list zenoss shut off List only active domains To list both inactive and active domains, use the command: $ sudo virsh list -all
To get the value for the -os-variant run the following command: $ osinfo-query os Virsh list all domains Memory size: 12238908 KiB List os variants This displays the host node information and the machines that support the virtualization process. This is the first item on our virsh commands cheatsheet. The basic structure of most virsh usage is: $ virsh. In this virsh commands cheatsheet, I’ll show you most used virsh commands to manage Guest Virtual Machines running on KVM or Xen Hypervisor.
Install KVM on CentOS / RHEL / Ubuntu / Debian / SLES / Arch Linux Virsh commands cheatsheet.
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