QEMU-GA(8)

NAME
qemu-ga - QEMU Guest Agent

SYNOPSIS

qemu-ga [OPTIONS]

DESCRIPTION

The QEMU Guest Agent is a daemon intended to be run within virtual machines. It allows the hypervisor host to perform various operations in the guest, such as:

•   get information from the guest

•   set the guest's system time

•   read/write a file

•   sync and freeze the filesystems

•   suspend the guest

•   reconfigure guest local processors

•   set user's password

•   ...

    qemu-ga will read a system configuration file on startup (located at /etc/qemu/qemu-ga.conf by default), then parse remaining configuration options on the command line. For the same key, the last option wins, but the lists accumulate (see below for configuration file format).

OPTIONS

-m, --method=METHOD
    Transport method: one of unix-listen, virtio-serial, or isa-serial, or vsock-listen (virtio-serial is the default).

-p, --path=PATH
    Device/socket path (the default for virtio-serial is /dev/virtio-ports/org.qemu.guest_agent.0, the default for isa-serial is /dev/ttyS0). Socket addresses for vsock-listen are written as <cid>:<port>.

-l, --logfile=PATH
    Set log file path (default is stderr).

-f, --pidfile=PATH
    Specify pid file (default is /var/run/qemu-ga.pid).

-F, --fsfreeze-hook=PATH
    Enable fsfreeze hook. Accepts an optional argument that specifies script to run on freeze/thaw. Script will be called with 'freeze'/'thaw' arguments accordingly (default is /etc/qemu/fsfreeze-hook). If using -F with an argument, do not follow -F with a space (for example: -F/var/run/fsfreezehook.sh).

-t, --statedir=PATH
    Specify the directory to store state information (absolute paths only, default is /var/run).

-v, --verbose
    Log extra debugging information.

-V, --version
    Print version information and exit.

-d, --daemon
    Daemonize after startup (detach from terminal).

-b, --blacklist=LIST
    Comma-separated list of RPCs to disable (no spaces, ? to list available RPCs).

-D, --dump-conf
    Dump the configuration in a format compatible with qemu-ga.conf and exit.

-h, --help
    Display this help and exit.

FILES

The syntax of the qemu-ga.conf configuration file follows the Desktop Entry Specification, here is a quick summary: it consists of groups of key-value pairs, interspersed with comments.

# qemu-ga configuration sample
[general]
daemonize = 0
pidfile = /var/run/qemu-ga.pid
verbose = 0
method = virtio-serial
path = /dev/virtio-ports/org.qemu.guest_agent.0
statedir = /var/run

The list of keys follows the command line options:
Key | Key type
daemon | boolean
method | string
path | string
logfile | string
pidfile | string
fsfreeze-hook | string
statedir | string
verbose | boolean
blacklist | string list

SEE ALSO

qemu(1)

AUTHOR
Michael Roth <mdroth@linux.vnet.ibm.com>

COPYRIGHT
2022, The QEMU Project Developers