mirror of https://gitee.com/openkylin/qemu.git
138 lines
3.2 KiB
Plaintext
138 lines
3.2 KiB
Plaintext
@example
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@c man begin SYNOPSIS
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@command{qemu-ga} [@var{OPTIONS}]
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@c man end
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@end example
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@c man begin DESCRIPTION
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The QEMU Guest Agent is a daemon intended to be run within virtual
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machines. It allows the hypervisor host to perform various operations
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in the guest, such as:
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@itemize
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@item
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get information from the guest
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@item
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set the guest's system time
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@item
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read/write a file
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@item
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sync and freeze the filesystems
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@item
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suspend the guest
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@item
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reconfigure guest local processors
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@item
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set user's password
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@item
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...
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@end itemize
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qemu-ga will read a system configuration file on startup (located at
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@file{/etc/qemu/qemu-ga.conf} by default), then parse remaining
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configuration options on the command line. For the same key, the last
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option wins, but the lists accumulate (see below for configuration
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file format).
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@c man end
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@c man begin OPTIONS
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@table @option
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@item -m, --method=@var{method}
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Transport method: one of @samp{unix-listen}, @samp{virtio-serial}, or
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@samp{isa-serial} (@samp{virtio-serial} is the default).
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@item -p, --path=@var{path}
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Device/socket path (the default for virtio-serial is
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@samp{/dev/virtio-ports/org.qemu.guest_agent.0},
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the default for isa-serial is @samp{/dev/ttyS0})
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@item -l, --logfile=@var{path}
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Set log file path (default is stderr).
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@item -f, --pidfile=@var{path}
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Specify pid file (default is @samp{/var/run/qemu-ga.pid}).
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@item -F, --fsfreeze-hook=@var{path}
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Enable fsfreeze hook. Accepts an optional argument that specifies
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script to run on freeze/thaw. Script will be called with
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'freeze'/'thaw' arguments accordingly (default is
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@samp{/etc/qemu/fsfreeze-hook}). If using -F with an argument, do
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not follow -F with a space (for example:
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@samp{-F/var/run/fsfreezehook.sh}).
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@item -t, --statedir=@var{path}
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Specify the directory to store state information (absolute paths only,
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default is @samp{/var/run}).
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@item -v, --verbose
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Log extra debugging information.
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@item -V, --version
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Print version information and exit.
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@item -d, --daemon
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Daemonize after startup (detach from terminal).
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@item -b, --blacklist=@var{list}
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Comma-separated list of RPCs to disable (no spaces, @samp{?} to list
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available RPCs).
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@item -D, --dump-conf
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Dump the configuration in a format compatible with @file{qemu-ga.conf}
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and exit.
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@item -h, --help
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Display this help and exit.
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@end table
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@c man end
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@c man begin FILES
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The syntax of the @file{qemu-ga.conf} configuration file follows the
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Desktop Entry Specification, here is a quick summary: it consists of
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groups of key-value pairs, interspersed with comments.
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@example
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# qemu-ga configuration sample
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[general]
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daemonize = 0
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pidfile = /var/run/qemu-ga.pid
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verbose = 0
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method = virtio-serial
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path = /dev/virtio-ports/org.qemu.guest_agent.0
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statedir = /var/run
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@end example
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The list of keys follows the command line options:
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@table @option
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@item daemon= boolean
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@item method= string
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@item path= string
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@item logfile= string
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@item pidfile= string
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@item fsfreeze-hook= string
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@item statedir= string
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@item verbose= boolean
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@item blacklist= string list
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@end table
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@c man end
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@ignore
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@setfilename qemu-ga
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@settitle QEMU Guest Agent
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@c man begin AUTHOR
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Michael Roth <mdroth@linux.vnet.ibm.com>
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@c man end
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@c man begin SEEALSO
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qemu(1)
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@c man end
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@end ignore
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