mirror of https://gitee.com/openkylin/libvirt.git
539 lines
22 KiB
Groff
539 lines
22 KiB
Groff
.\" Automatically generated by Pod::Man v1.37, Pod::Parser v1.32
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.\" ========================================================================
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.\"
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.IX Title "VIRSH 1"
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.TH VIRSH 1 "2007-06-21" "perl v5.8.8" "Virtualization Support"
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.SH "NAME"
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virsh \- management user interface
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.SH "SYNOPSIS"
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.IX Header "SYNOPSIS"
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virsh <subcommand> [args]
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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The \fBvirsh\fR program is the main interface for managing virsh guest
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domains. The program can be used to create, pause, and shutdown
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domains. It can also be used to list current domains. Libvirt is a C toolkit to interract with the virtualization capabilities of recent versions of Linux (and other OSes). It is free software available under the \s-1GNU\s0 Lesser General Public License. Virtualization of the Linux Operating System means the ability to run multiple instances of Operating Systems concurently on a single hardware system where the basic resources are driven by a Linux instance. The library aim at providing long term stable C \s-1API\s0 initially for the Xen paravirtualization but should be able to integrate other virtualization mechanisms, it currently also support QEmu and \s-1KVM\s0.
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.PP
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The basic structure of most virsh usage is:
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.PP
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.Vb 1
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\& virsh <command> <domain-id> [OPTIONS]
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.Ve
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.PP
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Where \fIcommand\fR is one of the commands listed below, \fIdomain-id\fR
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is the numeric domain id, or the domain name (which will be internally
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translated to domain id), and \fI\s-1OPTIONS\s0\fR are command specific
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options. There are a few exceptions to this rule in the cases where
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the command in question acts on all domains, the entire machine,
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or directly on the xen hypervisor. Those exceptions will be clear for
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each of those commands.
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.PP
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The \fBvirsh\fR program can be used either to run one command at a time
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by giving the command as an argument on the command line, or as a shell
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if no command is given in the command line, it will then start a minimal
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interpreter waiting for your commands and the \fBquit\fR command will then exit
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the program.
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.SH "NOTES"
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.IX Header "NOTES"
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All \fBvirsh\fR operations rely upon the libvirt library.
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For any virsh commands to run xend/qemu, or what ever virtual library that libvirt suports. For this reason you should start xend/qemu as a service when your system first boots using xen/qemu. This can usually be done using the command
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\&\fBservice start libvirtd\fR .
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.PP
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Most \fBvirsh\fR commands require root privledges to run due to the
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communications channels used to talk to the hypervisor. Running as
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non root will return an error.
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.PP
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Most \fBvirsh\fR commands act asynchronously, so just because the \fBvirsh\fR
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program returned, doesn't mean the action is complete. This is
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important, as many operations on domains, like create and shutdown,
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can take considerable time (30 seconds or more) to bring the machine
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into a fully compliant state. If you want to know when one of these
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actions has finished you must poll through virsh list periodically.
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.SH "GENERIC COMMANDS"
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.IX Header "GENERIC COMMANDS"
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The following commands are generic i.e. not specific to a domain.
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.IP "\fBhelp\fR optional \fIcommand\fR" 4
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.IX Item "help optional command"
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This prints a small synoposis about all commands available for \fBvirsh\fR
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\&\fBhelp\fR \fIcommand\fR will print out a detailed help message on that command.
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.IP "\fBquit\fR" 4
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.IX Item "quit"
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quit this interactive terminal
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.IP "\fBversion\fR" 4
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.IX Item "version"
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Will print out the major version info about what this built from.
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.RS 4
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.Sp
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.RS 4
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\&\fBExample\fR
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.Sp
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\&\fBvirsh\fR version
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.Sp
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Compiled against library: libvir 0.0.6
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.Sp
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Using library: libvir 0.0.6
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.Sp
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Using \s-1API:\s0 Xen 3.0.0
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.Sp
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Running hypervisor: Xen 3.0.0
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.RE
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.RE
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.RS 4
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.RE
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.IP "\fBconnect\fR \fI\s-1URI\s0\fR optional \fI\-\-readonly\fR" 4
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.IX Item "connect URI optional --readonly"
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(Re)\-Connect to the hypervisor. This is a build-in command after shell
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start up, and usually get an \fI\s-1URI\s0\fR parameter specifying how to connect
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to the hypervisor. The documentation page at <http://libvirt.org/uri.html>
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list the values supported but the most commons are:
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.RS 4
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.IP "xen:///" 4
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.IX Item "xen:///"
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this is used to connect to the local Xen hypervisor, this is the default
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.IP "qemu:///system" 4
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.IX Item "qemu:///system"
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allow to connect locally as root to the daemon supervizing QEmu and \s-1KVM\s0 domains
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.IP "qemu:///session" 4
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.IX Item "qemu:///session"
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allow to connect locally as a normal user to the his own set of QEmu and \s-1KVM\s0 domains
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.RE
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.RS 4
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.Sp
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For remote access see the documetnation page on how to make URIs.
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The \fI\-\-readonly\fR option allows for read-only connection
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.RE
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.IP "\fBnodeinfo\fR" 4
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.IX Item "nodeinfo"
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Returns basic information about the node, like number and type of \s-1CPU\s0,
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and size of the physical memory.
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.IP "\fBcapabilities\fR" 4
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.IX Item "capabilities"
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Print an \s-1XML\s0 document describing the capabilities of the hypervisor
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we are currently connected to. This includes a section on the host
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capabilities in terms of \s-1CPU\s0 and features, and a set of description
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for each kind of guest which can be virtualized. For a more complete
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description see the description at:
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<http://libvirt.org/format.html#Capa1>
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.IP "\fBlist\fR" 4
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.IX Item "list"
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Prints information about one or more domains. If no domains are
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specified it prints out information about all domains.
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.Sp
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An example format for the list is as follows:
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.Sp
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\&\fBvirsh\fR list
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Id Name State
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.Sp
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\&\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-
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.Sp
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.Vb 2
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\& 0 Domain-0 running
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\& 2 fedora paused
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.Ve
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.Sp
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Name is the name of the domain. \s-1ID\s0 the domain numeric id.
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State is the run state (see below).
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.RS 4
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.Sp
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.RS 4
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\&\fB\s-1STATES\s0\fR
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.Sp
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The State field lists 6 states for a Xen Domain, and which ones the
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current Domain is in.
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=back
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.RE
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.IP "\fBr \- running\fR" 4
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.IX Item "r - running"
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The domain is currently running on a \s-1CPU\s0
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.IP "\fBb \- blocked\fR" 4
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.IX Item "b - blocked"
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The domain is blocked, and not running or runable. This can be caused
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because the domain is waiting on \s-1IO\s0 (a traditional wait state) or has
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gone to sleep because there was nothing else for it to do.
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.IP "\fBp \- paused\fR" 4
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.IX Item "p - paused"
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The domain has been paused, usually occurring through the administrator
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running \fBxm pause\fR. When in a paused state the domain will still
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consume allocated resources like memory, but will not be eligible for
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scheduling by the Xen hypervisor.
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.IP "\fBs \- shutdown\fR" 4
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.IX Item "s - shutdown"
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The domain is in the process of shutting down, i.e. the guest operating system
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has been notified and should be in the process of stopping its operations
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gracefully.
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.IP "\fBc \- crashed\fR" 4
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.IX Item "c - crashed"
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The domain has crashed, which is always a violent ending. Usually
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this state can only occur if the domain has been configured not to
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restart on crash. See xmdomain.cfg for more info.
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.IP "\fBd \- dying\fR" 4
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.IX Item "d - dying"
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The domain is in process of dying, but hasn't completely shutdown or
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crashed.
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.RE
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.RS 4
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.SH "DOMAIN COMMANDS"
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.IX Header "DOMAIN COMMANDS"
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The following commands manipulate domains directly, as stated
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previously most commands take domain-id as the first parameter. The
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\&\fIdomain-id\fR can be specified as an short integer, a name or a full \s-1UUID\s0.
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.IP "\fBautostart\fR optional \fI\-\-disable\fR \fIdomain-id\fR" 4
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.IX Item "autostart optional --disable domain-id"
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Configure a domain to be automatically started at boot.
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.Sp
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The option \fI\-\-disable\fR disable autostarting.
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.IP "\fBconsole\fR \fIdomain-id\fR" 4
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.IX Item "console domain-id"
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Connect the virtual serial console for the guest.
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.IP "\fBcreate\fR \fI\s-1FILE\s0\fR" 4
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.IX Item "create FILE"
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Create a domain from an \s-1XML\s0 <file> an easy way to create one if you have a pre-existing xen guest created via \fBxm\fR create <\s-1XMLFILE\s0>.
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.Sp
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\&\fBExample\fR
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.Sp
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virsh dumpxml <domain\-id> > file.
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.IP "\fBdefine\fR \fI\s-1FILE\s0\fR" 4
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.IX Item "define FILE"
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Define a domain from an \s-1XML\s0 <file>. The domain definitions is registered
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but not started.
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.IP "\fBdestroy\fR \fIdomain-id\fR" 4
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.IX Item "destroy domain-id"
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Immediately terminate the domain domain\-id. This doesn't give the domain
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\&\s-1OS\s0 any chance to react, and it the equivalent of ripping the power
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cord out on a physical machine. In most cases you will want to use
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the \fBshutdown\fR command instead.
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.IP "\fBdominfo\fR \fIdomain-id\fR" 4
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.IX Item "dominfo domain-id"
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Returns basic information about the domain.
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.IP "\fBdomuuid\fR \fIdomain-name-or-id\fR" 4
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.IX Item "domuuid domain-name-or-id"
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Convert a domain name or id to domain \s-1UUID\s0
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.IP "\fBdomid\fR \fIdomain-name\fR" 4
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.IX Item "domid domain-name"
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Converts a domain name to a domain id using xend's internal mapping.
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.IP "\fBdominfo\fR \fIdomain-id\fR" 4
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.IX Item "dominfo domain-id"
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Returns basic information about the domain.
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.IP "\fBdomname\fR \fIdomain-id\fR" 4
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.IX Item "domname domain-id"
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convert a domain Id to domain name
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.IP "\fBdomstate\fR \fIdomain-id\fR" 4
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.IX Item "domstate domain-id"
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Returns state about a running domain.
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.IP "\fBdumpxml\fR \fIdomain-id\fR" 4
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.IX Item "dumpxml domain-id"
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Ouput the domain informations as an \s-1XML\s0 dump to stdout, this format can be used by the \fBcreate\fR command.
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.IP "\fBreboot\fR \fIdomain-id\fR" 4
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.IX Item "reboot domain-id"
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Reboot a domain. This acts just as if the domain had the \fBreboot\fR
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command run from the console. The command returns as soon as it has
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executed the reboot action, which may be significantly before the
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domain actually reboots.
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.Sp
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For xen vm the behavior of what happens to a domain when it reboots is set by the
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\&\fIon_reboot\fR parameter of the xmdomain.cfg file when the domain was
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created.
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.IP "\fBrestore\fR \fIstate-file\fR" 4
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.IX Item "restore state-file"
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Restores a domain from an \fBvirsh save\fR state file. See \fIsave\fR for more info.
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.IP "\fBsave\fR \fIdomain-id\fR \fIstate-file\fR" 4
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.IX Item "save domain-id state-file"
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Saves a running domain to a state file so that it can be restored
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later. Once saved, the domain will no longer be running on the
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system, thus the memory allocated for the domain will be free for
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other domains to use. \fBvirsh restore\fR restores from this state file.
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.Sp
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This is roughly equivalent to doing a hibernate on a running computer,
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with all the same limitations. Open network connections may be
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severed upon restore, as \s-1TCP\s0 timeouts may have expired.
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.IP "\fBsetmem\fR \fIdomain-id\fR \fBkilobytes\fR" 4
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.IX Item "setmem domain-id kilobytes"
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Change the current memory allocation in the guest domain. This should take
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effect immediately. The memory limit is specified in
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kilobytes.
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.IP "\fBsetmaxmem\fR \fIdomain-id\fR \fBkilobytes\fR" 4
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.IX Item "setmaxmem domain-id kilobytes"
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Change the maximum memory allocation limit in the guest domain. This should
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not change the current memory use. The memory limit is specified in
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kilobytes.
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.IP "\fBsetvcpus\fR \fIdomain-id\fR \fIcount\fR" 4
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.IX Item "setvcpus domain-id count"
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Change the number of virtual CPUs active in the guest domain. Note that
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\&\fIcount\fR may be limited by host, hypervisor or limit coming from the
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original description of domain.
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.IP "\fBshutdown\fR \fIdomain-id\fR" 4
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.IX Item "shutdown domain-id"
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Gracefully shuts down a domain. This coordinates with the domain \s-1OS\s0
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to perform graceful shutdown, so there is no guaruntee that it will
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succeed, and may take a variable length of time depending on what
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services must be shutdown in the domain.
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.Sp
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For a xen guest vm the behavior of what happens to a domain when it reboots is set by the
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\&\fIon_shutdown\fR parameter of the xmdomain.cfg file when the domain was
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created.
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.IP "\fBsuspend\fR \fIdomain-id\fR" 4
|
|
.IX Item "suspend domain-id"
|
|
Suspend a running domain. It is kept in memory but won't be scheduled
|
|
anymore.
|
|
.IP "\fBresume\fR \fIdomain-id\fR" 4
|
|
.IX Item "resume domain-id"
|
|
Moves a domain out of the suspended state. This will allow a previously
|
|
suspended domain to now be eligible for scheduling by the the underlying
|
|
hypervisor.
|
|
.IP "\fBundefine\fR \fIdomain-id\fR" 4
|
|
.IX Item "undefine domain-id"
|
|
Undefine the configuration for an inactive domain. Since it's not running
|
|
the domain name or UUId must be used as the \fIdomain-id\fR.
|
|
.IP "\fBvcpuinfo\fR \fIdomain-id\fR" 4
|
|
.IX Item "vcpuinfo domain-id"
|
|
Returns basic information about the domain virtual CPUs, like the number of
|
|
vCPUs, the running time, the affinity to physical processors.
|
|
.IP "\fBvcpupin\fR \fIdomain-id\fR \fIvcpu\fR \fIcpulist\fR" 4
|
|
.IX Item "vcpupin domain-id vcpu cpulist"
|
|
Pin domain VCPUs to host physical CPUs. The \fIvcpu\fR number must be provided
|
|
and \fIcpulist\fR is a comma separated list of physical \s-1CPU\s0 numbers.
|
|
.IP "\fBvncdisplay\fR \fIdomain-id\fR" 4
|
|
.IX Item "vncdisplay domain-id"
|
|
Output the \s-1IP\s0 address and port number for the \s-1VNC\s0 display.
|
|
.RE
|
|
.RS 4
|
|
.SH "DEVICES COMMANDS"
|
|
.IX Header "DEVICES COMMANDS"
|
|
The following commands manipulate devices associated to domains.
|
|
The domain-id can be specified as an short integer, a name or a full \s-1UUID\s0.
|
|
To better understand the values allowed as options for the command
|
|
reading the documentation at <http://libvirt.org/format.html> on the
|
|
format of the device sections to get the most accurate set of accepted values.
|
|
.IP "\fBattach-device\fR \fIdomain-id\fR \fI\s-1FILE\s0\fR" 4
|
|
.IX Item "attach-device domain-id FILE"
|
|
Attach a device to the domain, using a device definition in an \s-1XML\s0 file.
|
|
See the documentation to learn about libvirt \s-1XML\s0 format for a device.
|
|
.IP "\fBattach-disk\fR \fIdomain-id\fR \fIsource\fR \fItarget\fR optional \fI\-\-driver driver\fR \fI\-\-subdriver subdriver\fR \fI\-\-type type\fR \fI\-\-mode mode\fR" 4
|
|
.IX Item "attach-disk domain-id source target optional --driver driver --subdriver subdriver --type type --mode mode"
|
|
Attach a new disk device to the domain.
|
|
\&\fIsource\fR and \fItarget\fR are paths for the files and devices.
|
|
\&\fIdriver\fR can be \fIfile\fR, \fItap\fR or \fIphy\fR depending on the kind of access.
|
|
\&\fItype\fR can indicate \fIcdrom\fR or \fIfloppy\fR as alternative to the disk default.
|
|
\&\fImode\fR can specify the two specific mode \fIreadonly\fR or \fIshareable\fR.
|
|
.IP "\fBattach-interface\fR \fIdomain-id\fR \fItype\fR \fIsource\fR optional \fI\-\-target target\fR \fI\-\-mac mac\fR \fI\-\-script script\fR" 4
|
|
.IX Item "attach-interface domain-id type source optional --target target --mac mac --script script"
|
|
Attach a new network interface to the domain.
|
|
\&\fItype\fR can be either \fInetwork\fR to indicate a physical network device or \fIbridge\fR to indicate a bridge to a device.
|
|
\&\fIsource\fR indicates the source device.
|
|
\&\fItarget\fR allows to indicate the target device in the guest.
|
|
\&\fImac\fR allows to specify the \s-1MAC\s0 address of the network interface.
|
|
\&\fIscript\fR allows to specify a path to a script handling a bridge instead of
|
|
the default one.
|
|
.IP "\fBdetach-device\fR \fIdomain-id\fR \fI\s-1FILE\s0\fR" 4
|
|
.IX Item "detach-device domain-id FILE"
|
|
Detach a device from the domain, takes the same kind of \s-1XML\s0 descriptions
|
|
as command \fBattach-device\fR.
|
|
.IP "\fBdetach-disk\fR \fIdomain-id\fR \fItarget\fR" 4
|
|
.IX Item "detach-disk domain-id target"
|
|
Detach a disk device from a domain. The \fItarget\fR is the device as seen
|
|
from the domain.
|
|
.IP "\fBdetach-interface\fR \fIdomain-id\fR \fItype\fR optional \fI\-\-mac mac\fR" 4
|
|
.IX Item "detach-interface domain-id type optional --mac mac"
|
|
Detatch a network interface from a domain.
|
|
\&\fItype\fR can be either \fInetwork\fR to indicate a physical network device or \fIbridge\fR to indicate a bridge to a device.
|
|
It is recommended to use the \fImac\fR option to distinguish between the interfaces
|
|
if more than one are present on the domain.
|
|
.RE
|
|
.RS 4
|
|
.SH "VIRTUAL NETWORKS COMMANDS"
|
|
.IX Header "VIRTUAL NETWORKS COMMANDS"
|
|
The following commands manipulate networks. Libvirt has the capability to
|
|
define virtual networks which can then be used by domains and linked to
|
|
actual network dvices. For more detailed informations about this feature
|
|
see the documentation at <http://libvirt.org/format.html#Net1> . A lot
|
|
of the command for virtual networks are similar to the one used for domains,
|
|
but the way to name a virtual network is either by its name or \s-1UUID\s0.
|
|
.IP "\fBnet-autostart\fR \fInetwork\fR optional \fI\-\-disable\fR" 4
|
|
.IX Item "net-autostart network optional --disable"
|
|
Configure a virtual network to be automatically started at boot.
|
|
The \fI\-\-disable\fR option disable autostarting.
|
|
.IP "\fBnet-create\fR \fIfile\fR" 4
|
|
.IX Item "net-create file"
|
|
Create a virtual network from an \s-1XML\s0 \fIfile\fR, see the documentation to get
|
|
a description of the \s-1XML\s0 network format used by libvirt.
|
|
.IP "\fBnet-define\fR \fIfile\fR" 4
|
|
.IX Item "net-define file"
|
|
Define a virtual network from an \s-1XML\s0 \fIfile\fR, the network is just defined but
|
|
not instanciated.
|
|
.IP "\fBnet-destroy\fR \fInetwork\fR" 4
|
|
.IX Item "net-destroy network"
|
|
Destroy a given virtual network specified by its name or \s-1UUID\s0. This takes
|
|
effect immediately.
|
|
.IP "\fBnet-dumpxml\fR \fInetwork\fR" 4
|
|
.IX Item "net-dumpxml network"
|
|
Output the virtual network information as an \s-1XML\s0 dump to stdout.
|
|
.IP "\fBnet-list\fR optional \fI\-\-inactive\fR or \fI\-\-all\fR" 4
|
|
.IX Item "net-list optional --inactive or --all"
|
|
Returns the list of active networks, if \fI\-\-all\fR is specified this will also
|
|
include defined but inactive networks, if \fI\-\-inactive\fR is specified only the
|
|
inactive ones will be listed.
|
|
.IP "\fBnet-name\fR \fInetwork-UUID\fR" 4
|
|
.IX Item "net-name network-UUID"
|
|
Convert a network \s-1UUID\s0 to network name.
|
|
.IP "\fBnet-start\fR \fInetwork\fR" 4
|
|
.IX Item "net-start network"
|
|
Start a (previously defined) inactive network.
|
|
.IP "\fBnet-undefine\fR \fInetwork\fR" 4
|
|
.IX Item "net-undefine network"
|
|
Undefine the configuration for an inactive network.
|
|
.IP "\fBnet-uuid\fR \fInetwork-name\fR" 4
|
|
.IX Item "net-uuid network-name"
|
|
Convert a network name to network \s-1UUID\s0.
|
|
.RE
|
|
.RS 4
|
|
.SH "SEE ALSO"
|
|
.IX Header "SEE ALSO"
|
|
\&\fIxm\fR\|(1), \fIxmdomain.cfg\fR\|(5), \fIxentop\fR\|(1) , <http://www.libvirt.org/>
|
|
.SH "AUTHOR"
|
|
.IX Header "AUTHOR"
|
|
.Vb 2
|
|
\& Andrew Puch <apuch @ redhat.com>
|
|
\& Daniel Veillard <veillard @ redhat.com>
|
|
.Ve
|
|
.Sp
|
|
.Vb 3
|
|
\& Based on the xm man paged by
|
|
\& Sean Dague <sean at dague dot net>
|
|
\& Daniel Stekloff <dsteklof at us dot ibm dot com>
|
|
.Ve
|
|
.SH "BUGS"
|
|
.IX Header "BUGS"
|
|
Bugs can be view on the RedHat buzilla page under the libvirt
|
|
<https://bugzilla.redhat.com/>
|
|
.Sp
|
|
<https://bugzilla.redhat.com/bugzilla/buglist.cgi?product=Fedora+Core&component=libvirt&bug_status=NEW&bug_status=ASSIGNED&bug_status=REOPENED&bug_status=MODIFIED&short_desc_type=allwordssubstr&short_desc=&long_desc_type=allwordssubstr>
|
|
.Sp
|
|
=
|