| .\" Manpage for kvmtool |
| .\" Copyright (C) 2015 by Andre Przywara <andre.przywara@arm.com> |
| .TH kvmtool 1 "11 Nov 2015" "0.1" "kvmtool man page" |
| .SH NAME |
| kvmtool \- running KVM guests |
| .SH SYNOPSIS |
| lkvm COMMAND [ARGS] |
| .SH DESCRIPTION |
| kvmtool is a userland tool for creating and controlling KVM guests. |
| .SH "KVMTOOL COMMANDS" |
| .sp |
| .PP |
| .B run -k <kernel\-image> [\-c <cores>] [\-m <MB>] [\-p <command line>] |
| .br |
| .B [\-i <initrd>] [\-d <image file>] [\-\-console serial|virtio|hv] |
| .br |
| .B [\-\-dev <node>] [\-\-debug] [\-\-debug\-single\-step] [\-\-debug\-ioport] |
| .RS 4 |
| Run a guest. |
| .sp |
| .B \-k, \-\-kernel <image file> |
| .RS 4 |
| The virtual machine kernel. |
| .RE |
| .sp |
| .B \-c, \-\-cpus <n> |
| .RS 4 |
| The number of virtual CPUs to run. |
| .RE |
| .sp |
| .B \-m, \-\-mem <n> |
| .RS 4 |
| Virtual machine memory size in MB. |
| .RE |
| .sp |
| .B \-p, \-\-params <parameters> |
| .RS 4 |
| Additional kernel command line arguments. |
| .RE |
| .sp |
| .B \-i, \-\-initrd <image file> |
| .RS 4 |
| Initial RAM disk image. |
| .RE |
| .sp |
| .B \-d, \-\-disk <image file|directory> |
| .RS 4 |
| A disk image file or a rootfs directory. |
| .RE |
| .sp |
| .B \-\-console serial|virtio|hv |
| .RS 4 |
| Console to use. |
| .RE |
| .sp |
| .B \-\-dev <device node> |
| .RS 4 |
| KVM device file (instead of the default /dev/kvm). |
| .RE |
| .sp |
| .B \-\-debug |
| .RS 4 |
| Enable debug messages. |
| .RE |
| .sp |
| .B \-\-debug-single-step |
| .RS 4 |
| Enable single stepping. |
| .RE |
| .sp |
| .B \-\-debug-ioport |
| .RS 4 |
| Enable ioport debugging. |
| .RE |
| .RE |
| .PP |
| .B setup <name> |
| .RS 4 |
| Setup a new virtual machine. This creates a new rootfs in the .lkvm |
| folder of your home directory. |
| .RE |
| .PP |
| .B pause \-\-all|\-\-name <name> |
| .RS 4 |
| Pause a virtual machine. |
| .sp |
| .B \-a, \-\-all |
| .RS 4 |
| Pause all running instances. |
| .RE |
| .sp |
| .B \-n, \-\-name <name> |
| .RS 4 |
| Pause that specified instance. For a list of running instances, see \fI lkvm list\fR. |
| .RE |
| .RE |
| .PP |
| .B resume --all|--name <name> |
| .RS 4 |
| Resume a previously paused virtual machine. |
| .sp |
| .B \-a, \-\-all |
| .RS 4 |
| Resume all running instances. |
| .RE |
| .sp |
| .B \-n, \-\-name <name> |
| .RS 4 |
| Resume that specified instance. For a list of running instances, see \fI lkvm list\fR. |
| .RE |
| .RE |
| .PP |
| .B list [\-i] [\-r] |
| .RS 4 |
| Print a list of running instances on the host. This is restricted to instances |
| started by the current user, as it looks in the .lkvm folder in your home |
| directory to find the socket files. |
| .sp |
| .B \-i, \-\-run |
| .RS 4 |
| List all running instances. |
| .RE |
| .sp |
| .B \-r, \-\-rootfs |
| .RS 4 |
| List rootfs instances. |
| .RE |
| .RE |
| .PP |
| .B debug --all|--name <guest name> [--dump] [--nmi <n>] [--sysrq <rq>] |
| .RS 4 |
| Print debug information from a running VM instance. |
| .sp |
| .B \-a, \-\-all |
| .RS 4 |
| Debug all running instances. |
| .RE |
| .PP |
| .B \-n, \-\-name <guest name> |
| .RS 4 |
| Debug the specified instance. |
| .RE |
| .sp |
| .B \-d, \-\-dump |
| .RS 4 |
| Generate a debug dump from guest. |
| .RE |
| .PP |
| .B \-m, \-\-nmi <VCPU nr> |
| .RS 4 |
| Generate an NMI on the specified virtual CPU. |
| .RE |
| .PP |
| .B \-s, \-\-sysrq <sysrq> |
| .RS 4 |
| Inject a Linux sysrq into the guest. |
| .RE |
| .RE |
| .PP |
| .B balloon \-\-name <guest name> \-\-inflate|\-\-deflate <amount in MB> |
| .RS 4 |
| This command inflates or deflates the virtio balloon located in the |
| specified instance. |
| \-\-inflate increases the size of the balloon, thus \fIdecreasing\fR the |
| amount of virtual RAM available for the guest. \-\-deflate returns previously |
| inflated memory back to the guest. |
| .sp |
| .B \-n, \-\-name <guest name> |
| .RS 4 |
| Ballon the specified instance. For a list of all instances, see \fI"lkvm list"\fR. |
| .RE |
| .PP |
| .B \-i, \-\-inflate <n> |
| .RS 4 |
| Inflates the ballon by the specified number of Megabytes. This decreases the |
| amount of usable memory in the guest. |
| .RE |
| .PP |
| .B \-d, \-\-deflate <n> |
| .RS 4 |
| Deflates the ballon by the specified number of Megabytes. This increases the |
| amount of usable memory in the guest. |
| .RE |
| .RE |
| .PP |
| .B stop --all|--name <name> |
| .RS 4 |
| Stop a running instance. |
| .sp |
| .B \-a, \-\-all |
| .RS 4 |
| Stop all running instances. |
| .RE |
| .sp |
| .B \-n, \-\-name <name> |
| .RS 4 |
| Stop the specified instance. For a list of running instances, see \fI lkvm list\fR. |
| .RE |
| .RE |
| .PP |
| .B stat \-\-all|\-\-name <name> [\-m] |
| .RS 4 |
| Print statistics about a running instance. |
| .sp |
| .B \-m, \-\-memory |
| .RS 4 |
| Display memory statistics. |
| .RE |
| .RE |
| .PP |
| .B sandbox (\fIlkvm run arguments\fR) \-\- [sandboxed command] |
| .RS 4 |
| Run a command in a sandboxed guest. Kvmtool will inject a special init |
| binary which will do an initial setup of the guest Linux and then |
| lauch a shell script with the specified command. Upon this command ending, |
| the guest will be shutdown. |
| .RE |
| .SH EXAMPLES |
| .RS 4 |
| \fB$\fR lkvm run -k bzImage |
| .RE |
| .SH SEE ALSO |
| qemu(1), kvm(4) |
| .SH BUGS |
| .SH AUTHOR |
| Andre Przywara <andre.przywara@arm.com> |
