libguestfs-tools.conf - configuration file for guestfish, guestmount, virt-rescue







libguestfs-tools.conf (or $HOME/.libguestfs-tools.rc) changes the defaults for the following programs only:

There is currently only one setting which is controlled by this file. Adding (or uncommenting):

 read_only = true;

changes these programs so they act as if the --ro flag was given on the command line. You can use this to make the programs safe against accidental modification of a live guest (users would have to explicitly add the --rw flag to modify guests). This is not the default because it is not backwards compatible. See also "OPENING DISKS FOR READ AND WRITE" in guestfish(1).

Note that the semicolon is required.

This file is parsed by the libconfig library. For more information about the format, see:


The order of the configuration files being read is, by importance:

This means local users can override the system configuration by copying the configuration file (or creating it anew) into $XDG_CONFIG_HOME/libguestfs/libguestfs-tools.conf.

/etc/libguestfs-tools.conf and $HOME/.libguestfs-tools.rc are the old non-XDG paths which are read for compatibility.


"OPENING DISKS FOR READ AND WRITE" in guestfish(1), guestmount(1), virt-rescue(1),,


Richard W.M. Jones (rjones at redhat dot com)


Copyright (C) 2011-2019 Red Hat Inc.


This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.


To get a list of bugs against libguestfs, use this link:

To report a new bug against libguestfs, use this link:

When reporting a bug, please supply: