1 files changed, 57 insertions, 1 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index d61a5b7514..6cf20aa09f 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -943,10 +943,13 @@ A number of optional fields may be specified:
 @item @code{port} (default: @code{22})
 Port number of SSH server on the machine.
 
-@item @code{private-key} (default: @file{~/.ssh/id_rsa})
+@item @code{private-key} (default: @file{~root/.ssh/id_rsa})
 The SSH private key file to use when connecting to the machine, in
 OpenSSH format.
 
+Note that the default value is the private key @emph{of the root
+account}.  Make sure it exists if you use the default.
+
 @item @code{compression} (default: @code{"zlib@@openssh.com,zlib"})
 @itemx @code{compression-level} (default: @code{3})
 The SSH-level compression methods and compression level requested.
@@ -1445,6 +1448,14 @@ xset +fp ~/.guix-profile/share/fonts/truetype
 After that, you can run @code{xlsfonts} (from @code{xlsfonts} package)
 to make sure your TrueType fonts are listed there.
 
+@cindex @code{fc-cache}
+@cindex font cache
+After installing fonts you may have to refresh the font cache to use
+them in applications.  The same applies when applications installed via
+Guix do not seem to find fonts.  To force rebuilding of the font cache
+run @code{fc-cache -f}.  The @code{fc-cache} command is provided by the
+@code{fontconfig} package.
+
 @subsection X.509 Certificates
 
 @cindex @code{nss-certs}
@@ -15276,6 +15287,35 @@ Package object of thermald.
 @node Miscellaneous Services
 @subsubsection Miscellaneous Services
 
+@cindex sysctl
+@subsubheading System Control Service
+
+The @code{(gnu services sysctl)} provides a service to configure kernel
+parameters at boot.
+
+@defvr {Scheme Variable} sysctl-service-type
+The service type for @command{sysctl}, which modifies kernel parameters
+under @file{/proc/sys/}.  To enable IPv4 forwarding, it can be
+instantiated as:
+
+@example
+(service sysctl-service-type
+         (sysctl-configuration
+           (settings '(("net.ipv4.ip_forward" . "1")))))
+@end example
+@end defvr
+
+@deftp {Data Type} sysctl-configuration
+The data type representing the configuration of @command{sysctl}.
+
+@table @asis
+@item @code{sysctl} (default: @code{(file-append procps "/sbin/sysctl"})
+The @command{sysctl} executable to use.
+
+@item @code{settings} (default: @code{'()})
+An association list specifies kernel parameters and their values.
+@end table
+@end deftp
 
 @cindex lirc
 @subsubheading Lirc Service
@@ -16190,6 +16230,9 @@ in @var{file} that stands alone.  By default, @command{guix system}
 estimates the size of the image needed to store the system, but you can
 use the @option{--image-size} option to specify a value.
 
+You can specify the root file system type by using the
+@option{--file-system-type} option.  It defaults to @code{ext4}.
+
 When using @code{vm-image}, the returned image is in qcow2 format, which
 the QEMU emulator can efficiently use. @xref{Running GuixSD in a VM},
 for more information on how to run the image in a virtual machine.
@@ -16245,6 +16288,19 @@ This works as per @command{guix build} (@pxref{Invoking guix build}).
 Return the derivation file name of the given operating system without
 building anything.
 
+@item --file-system-type=@var{type}
+@itemx -t @var{type}
+For the @code{disk-image} action, create a file system of the given
+@var{type} on the image.
+
+When this option is omitted, @command{guix system} uses @code{ext4}.
+
+@cindex ISO-9660 format
+@cindex CD image format
+@cindex DVD image format
+@code{--file-system-type=iso9660} produces an ISO-9660 image, suitable
+for burning on CDs and DVDs.
+
 @item --image-size=@var{size}
 For the @code{vm-image} and @code{disk-image} actions, create an image
 of the given @var{size}.  @var{size} may be a number of bytes, or it may