X-Git-Url: http://git.annexia.org/?p=libguestfs.git;a=blobdiff_plain;f=perl%2Flib%2FSys%2FGuestfs.pm;h=0e4dde4d855c89efc7800b9952666a0eb583eac3;hp=d803ce1124a68a1bce39e25d0868839c1a22cd3b;hb=85ed8cef99c19b4143844991d14e0b848fecc5da;hpb=e8ecc08f663b44f3d79517affe52f137858dfe00;ds=sidebyside

diff --git a/perl/lib/Sys/Guestfs.pm b/perl/lib/Sys/Guestfs.pm
index d803ce1..0e4dde4 100644
--- 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
@@ -889,9 +894,6 @@ guest kernel command line.
 The default is C<NULL> unless overridden by setting
 C<LIBGUESTFS_APPEND> environment variable.
 
-The string C<append> is stashed in the libguestfs handle, so the caller
-must make sure it remains valid for the lifetime of the handle.
-
 Setting C<append> to C<NULL> means I<no> additional options
 are passed (libguestfs always adds a few of its own).
 
@@ -938,9 +940,6 @@ Set the path that libguestfs searches for kernel and initrd.img.
 The default is C<$libdir/guestfs> unless overridden by setting
 C<LIBGUESTFS_PATH> environment variable.
 
-The string C<path> is stashed in the libguestfs handle, so the caller
-must make sure it remains valid for the lifetime of the handle.
-
 Setting C<path> to C<NULL> restores the default path.
 
 =item $h->set_qemu ($qemu);
@@ -953,9 +952,6 @@ configure script.
 You can also override this by setting the C<LIBGUESTFS_QEMU>
 environment variable.
 
-The string C<qemu> is stashed in the libguestfs handle, so the caller
-must make sure it remains valid for the lifetime of the handle.
-
 Setting C<qemu> to C<NULL> restores the default qemu binary.
 
 =item $h->set_ready ();
@@ -994,9 +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>.
@@ -1109,6 +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>
@@ -1171,6 +1226,19 @@ How many blocks are zeroed isn't specified (but it's I<not> enough
 to securely wipe the device).  It should be sufficient to remove
 any partition tables, filesystem superblocks and so on.
 
+=item $h->zerofree ($device);
+
+This runs the I<zerofree> program on C<device>.  This program
+claims to zero unused inodes and disk blocks on an ext2/3
+filesystem, thus making it possible to compress the filesystem
+more effectively.
+
+You should B<not> run this program if the filesystem is
+mounted.
+
+It is possible that using this program can damage the filesystem
+or data on the filesystem.
+
 =cut
 
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