Add vg-activate{,-all} commands, and resize recipe.

[libguestfs.git] / perl / lib / Sys / Guestfs.pm

diff --git a/perl/lib/Sys/Guestfs.pm b/perl/lib/Sys/Guestfs.pm
index b11594f..0e4dde4 100644 (file)
--- a/perl/lib/Sys/Guestfs.pm
+++ b/perl/lib/Sys/Guestfs.pm
@@ -840,6 +840,11 @@ The implementation uses the C<pvremove> command which refuses to
 wipe physical volumes that contain any volume groups, so you have
 to remove those first.
 
+=item $h->pvresize ($device);
+
+This resizes (expands or shrinks) an existing LVM physical
+volume to match the new size of the underlying device.
+
 =item @physvols = $h->pvs ();
 
 List all the physical volumes detected.  This is the equivalent
@@ -985,9 +990,45 @@ To create a single partition occupying the whole disk, you would
 pass C<lines> as a single element list, when the single element being
 the string C<,> (comma).
 
+See also: C<$h-E<gt>sfdisk_l>, C<$h-E<gt>sfdisk_N>
+
+B<This command is dangerous.  Without careful use you
+can easily destroy all your data>.
+
+=item $h->sfdisk_N ($device, $n, $cyls, $heads, $sectors, $line);
+
+This runs L<sfdisk(8)> option to modify just the single
+partition C<n> (note: C<n> counts from 1).
+
+For other parameters, see C<$h-E<gt>sfdisk>.  You should usually
+pass C<0> for the cyls/heads/sectors parameters.
+
 B<This command is dangerous.  Without careful use you
 can easily destroy all your data>.
 
+=item $partitions = $h->sfdisk_disk_geometry ($device);
+
+This displays the disk geometry of C<device> read from the
+partition table.  Especially in the case where the underlying
+block device has been resized, this can be different from the
+kernel's idea of the geometry (see C<$h-E<gt>sfdisk_kernel_geometry>).
+
+The result is in human-readable format, and not designed to
+be parsed.
+
+=item $partitions = $h->sfdisk_kernel_geometry ($device);
+
+This displays the kernel's idea of the geometry of C<device>.
+
+The result is in human-readable format, and not designed to
+be parsed.
+
+=item $partitions = $h->sfdisk_l ($device);
+
+This displays the partition table on C<device>, in the
+human-readable output of the L<sfdisk(8)> command.  It is
+not intended to be parsed.
+
 =item %statbuf = $h->stat ($path);
 
 Returns file information for the given C<path>.
@@ -1100,6 +1141,29 @@ C<filename> can also be a named pipe.
 
 See also C<$h-E<gt>download>.
 
+=item $h->vg_activate ($activate, \@volgroups);
+
+This command activates or (if C<activate> is false) deactivates
+all logical volumes in the listed volume groups C<volgroups>.
+If activated, then they are made known to the
+kernel, ie. they appear as C</dev/mapper> devices.  If deactivated,
+then those devices disappear.
+
+This command is the same as running C<vgchange -a y|n volgroups...>
+
+Note that if C<volgroups> is an empty list then B<all> volume groups
+are activated or deactivated.
+
+=item $h->vg_activate_all ($activate);
+
+This command activates or (if C<activate> is false) deactivates
+all logical volumes in all volume groups.
+If activated, then they are made known to the
+kernel, ie. they appear as C</dev/mapper> devices.  If deactivated,
+then those devices disappear.
+
+This command is the same as running C<vgchange -a y|n>
+
 =item $h->vgcreate ($volgroup, \@physvols);
 
 This creates an LVM volume group called C<volgroup>