Questions tagged [virsh]

Linux virtual machines manager.

Name

virsh - management user interface

Synopsis

virsh [ OPTION ]... [ COMMAND_STRING ]

virsh [ OPTION ]... COMMAND [ ARG ]...

Description

The virsh program is the main interface for managing virsh guest domains. The program can be used to create, pause, and shutdown domains. It can also be used to list current domains. Libvirt is a C toolkit to interact with the virtualization capabilities of recent versions of Linux (and other OSes). It is free software available under the GNU Lesser General Public License. Virtualization of the Linux Operating System means the ability to run multiple instances of Operating Systems concurrently on a single hardware system where the basic resources are driven by a Linux instance. The library aims at providing a long term stable C API . It currently supports Xen, QEmu, KVM , LXC , OpenVZ, VirtualBox and VMware ESX .

The basic structure of most virsh usage is:

virsh [OPTION]... <command> <domain> [ARG]...

Where command is one of the commands listed below; domain is the numeric domain id, or the domain name, or the domain UUID ; and ARGS are command specific options. There are a few exceptions to this rule in the cases where the command in question acts on all domains, the entire machine, or directly on the xen hypervisor. Those exceptions will be clear for each of those commands. Note: it is permissible to give numeric names to domains, however, doing so will result in a domain that can only be identified by domain id. In other words, if a numeric value is supplied it will be interpreted as a domain id, not as a name. The virsh program can be used either to run one COMMAND by giving the command and its arguments on the shell command line, or a COMMAND_STRING which is a single shell argument consisting of multiple COMMAND actions and their arguments joined with whitespace, and separated by semicolons between commands. Within COMMAND_STRING , virsh understands the same single, double, and backslash escapes as the shell, although you must add another layer of shell escaping in creating the single shell argument. If no command is given in the command line, virsh will then start a minimal interpreter waiting for your commands, and the quit command will then exit the program.

The virsh program understands the following OPTIONS .

-h, --help
Ignore all other arguments, and behave as if the help command were given instead.
-v, --version[=short]
Ignore all other arguments, and prints the version of the libvirt library virsh is coming from
-V, --version=long
Ignore all other arguments, and prints the version of the libvirt library virsh is coming from and which options and driver are compiled in.
-c, --connect URI
Connect to the specified URI , as if by the connect command, instead of the default connection.
-d, --debug LEVEL
Enable debug messages at integer LEVEL and above. LEVEL can range from 0 to 4 (default). See the documentation of VIRSH_DEBUG environment variable below for the description of each LEVEL .
-l, --log FILE
Output logging details to FILE .
-q, --quiet
Avoid extra informational messages.
-r, --readonly
Make the initial connection read-only, as if by the --readonly option of the connect command.
-t, --timing
Output elapsed time information for each command.
-e, --escape string
Set alternative escape sequence for console command. By default, telnet's ^] is used. Allowed characters when using hat notation are: alphabetic character, @, [, ], \, ^, _.
99 questions
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libvirt-go DomainEventLifecycleRegister "could not initialize domain event timer"

I have installed libvirt-dev, compiled and run that code on a Ubuntu box: package main import ( "fmt" "github.com/libvirt/libvirt-go" ) func main() { conn, _ := libvirt.NewConnect("qemu:///system") defer conn.Close() cb :=…
aiqency
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QEMU-KVM automatically set filterref parameter

I'm sorry if this is a simple question, but I am just starting out with qemu and can't find a easy way to do this. I am trying to somewhat automate my KVM deployment. I am currently running into the issue that I can't find a way to automatically set…
Philipp
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Problem with virsh / cannot connect to qemu

I am trying to setup KVM, but when running $ sudo virsh net-define br10.xml I get this: error: failed to connect to the hypervisor error: Failed to connect socket to '/var/run/libvirt/libvirt-sock': No such file or directory And when jumping into…
Turnix
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How to automate synchronizing Windows 10 guest's time with the Linux host?

On Arch Linux I have a Windows 10 Guest on top of libvirt, kvm and virsh (still having some trouble to connect all these dots mentally together). Every time I suspend the laptop and a day is gone the Windows 10 host goes out of sync. I learned that…
mehdix
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VM's are not Visible to virsh command executed using ansible shell task

I am trying to save the state of all running VM's before I can shut down the host. virsh save The idea is to restore the VM's when I bring back the host again. I am using ansible virt module to determine the running…
Sharu
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Get "Permission denied" in .Net Core in Linux with Process.start

I've been calling virsh from my .Net Core console app in Linux using Proccess.start for many month but suddenly I get a permission error: Permission denied at Interop.Sys.ForkAndExecProcess(String filename, String[] argv, String[] envp, String cwd,…
MrCalvin
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Export KVM VM to HyperV

We have a VM running on CentOS KVM that we want to export to MS Hyper V. We saw the instructions to export the image here: https://blogs.msdn.microsoft.com/virtual_pc_guy/2015/06/22/handy-tool-for-converting-kvm-vmware-images-to-hyper-v/ Using…
singhspk
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Configure kvm (libvirt) routed network on Ubuntu 16.04 host

I have an Ubuntu 16.04 KVM hypervisor behind a Debian-based firewall, and I'm trying to make the guest VMs IP-reachable, preferably matching the subnet I'm using for that collection of machines. The firewall is hosting a 10.4.0.0/16 network, and…
Paul O
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from QEMU to libvirt(virsh) - add USB-port

I would like to have following line translated from qemu optiones into libvirt xml. -qemu-system-x86_64 -... -usb -device usb-host,bus=usb-bus.0,hostbus=,hostport= This adds a physical usb plug to a virtual machine. Most examples are…
Cutton Eye
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libvirt: Is it possible to get guest boot info when guest not responsible?

Under KVM, I'm using virsh create to create some guest, but sometimes, the guest can't login (may be various of reasons), is it possible to get the guest boot info outside by using virsh? For example, is it BIOS passed, or OS loading ok,…
coanor
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virsh attatch-disk failed: no such file or directory

I'm using virsh attatch-disk to add a new device to a running guest under KVM: # virsh attatch-disk --source c.raw --target vdb the output is: error: Failed to attach disk error: Failed to open file 'c.raw': No such file or…
coanor
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How can i check specific server running or not(using virsh commands), before I start | restart it?

I'm trying to restart, start, shutdown a specific virtual machine. Here, at first I want to check if the virtual machine is already in required state or not before I run the script. These are the list of VMs. [root@demohost05 ~]# virsh list…
Rajendra Maharjan
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virsh console hangs whenever I connect to Virtual Machine

Whenever I try to connect to VM using virsh console my screen hangs and displays: Connected to domain Escape character is ^] I have found many solutions on the internet but nothing has worked for me and I am even not able to…
sachin
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Adding xen domains to virsh

Basic problem: I had task like this : I need to collect metrics with diamond collector from Xen. Collector used libvirt python library and just doest find any xen domains for output information. Thats because libvirt get information from virsh which…
MyHardWay
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Does qemu-monitor-command support external snapshot?

I made an external snapshot for 'myvm'. But when I tried to list snapshot info for 'myvm' through qemu-monitor-command --hmp myvm 'info snapshots'. There was nothing shown. However, I got correct snapshot info by using snapshot-list myvm. I am not…
Wendy
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