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QEMU Guest Agent
**qemu-ga** [*OPTIONS*]
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
|CONFDIR|\ ``/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).
.. program:: qemu-ga
.. option:: -m, --method=METHOD
Transport method: one of ``unix-listen``, ``virtio-serial``, or
``isa-serial``, or ``vsock-listen`` (``virtio-serial`` is the default).
.. option:: -p, --path=PATH
Device/socket path (the default for virtio-serial is
the default for isa-serial is ``/dev/ttyS0``). Socket addresses for
vsock-listen are written as ``<cid>:<port>``.
.. option:: -l, --logfile=PATH
Set log file path (default is stderr).
.. option:: -f, --pidfile=PATH
Specify pid file (default is ``/var/run/``).
.. option:: -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
|CONFDIR|\ ``/fsfreeze-hook``). If using -F with an argument, do
not follow -F with a space (for example:
.. option:: -t, --statedir=PATH
Specify the directory to store state information (absolute paths only,
default is ``/var/run``).
.. option:: -v, --verbose
Log extra debugging information.
.. option:: -V, --version
Print version information and exit.
.. option:: -d, --daemon
Daemonize after startup (detach from terminal).
.. option:: -b, --blacklist=LIST
Comma-separated list of RPCs to disable (no spaces, ``?`` to list
available RPCs).
.. option:: -D, --dump-conf
Dump the configuration in a format compatible with ``qemu-ga.conf``
and exit.
.. option:: -h, --help
Display this help and exit.
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
daemonize = 0
pidfile = /var/run/
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