This automatically calls L<sync(2)> before the operation,
so that the maximum guest memory is freed.
+=head2 e2fsck-f
+
+ e2fsck-f device
+
+This runs C<e2fsck -p -f device>, ie. runs the ext2/ext3
+filesystem checker on C<device>, noninteractively (C<-p>),
+even if the filesystem appears to be clean (C<-f>).
+
+This command is only needed because of C<resize2fs>
+(q.v.). Normally you should use C<fsck>.
+
=head2 equal
equal file1 file2
particular that the filename is not prepended to the output
(the C<-b> option).
+=head2 find
+
+ find directory
+
+This command lists out all files and directories, recursively,
+starting at C<directory>. It is essentially equivalent to
+running the shell command C<find directory -print> but some
+post-processing happens on the output, described below.
+
+This returns a list of strings I<without any prefix>. Thus
+if the directory structure was:
+
+ /tmp/a
+ /tmp/b
+ /tmp/c/d
+
+then the returned list from C<find> C</tmp> would be
+4 elements:
+
+ a
+ b
+ c
+ c/d
+
+If C<directory> is not a directory, then this command returns
+an error.
+
+The returned list is sorted.
+
=head2 fsck
fsck fstype device
You can also remove all LVs in a volume group by specifying
the VG name, C</dev/VG>.
+=head2 lvresize
+
+ lvresize device mbytes
+
+This resizes (expands or shrinks) an existing LVM logical
+volume to C<mbytes>. When reducing, data in the reduced part
+is lost.
+
=head2 lvs
lvs
as end of line). For those you need to use the C<read-file>
function which has a more complex interface.
+=head2 resize2fs
+
+ resize2fs device
+
+This resizes an ext2 or ext3 filesystem to match the size of
+the underlying device.
+
+I<Note:> It is sometimes required that you run C<e2fsck-f>
+on the C<device> before calling this command. For unknown reasons
+C<resize2fs> sometimes gives an error about this and sometimes not.
+In any case, it is always safe to call C<e2fsck-f> before
+calling this function.
+
=head2 rm
rm path
Use C<-> instead of a filename to read/write from stdin/stdout.
+=head2 vg-activate
+
+ vg-activate true|false '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.
+
+=head2 vg-activate-all
+
+ vg-activate-all true|false
+
+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>
+
=head2 vgcreate
vgcreate volgroup 'physvols ...'