This command is entirely equivalent to running C<fsck -a -t fstype device>.
+=item $append = $h->get_append ();
+
+Return the additional kernel options which are added to the
+guest kernel command line.
+
+If C<NULL> then no options are added.
+
=item $autosync = $h->get_autosync ();
Get the autosync flag.
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
Remove the single directory C<path>.
+=item $h->set_append ($append);
+
+This function is used to add additional options to the
+guest kernel command line.
+
+The default is C<NULL> unless overridden by setting
+C<LIBGUESTFS_APPEND> environment variable.
+
+Setting C<append> to C<NULL> means I<no> additional options
+are passed (libguestfs always adds a few of its own).
+
=item $h->set_autosync ($autosync);
If C<autosync> is true, this enables autosync. Libguestfs will make a
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);
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 $h->set_ready ();
pass C<lines> as a single element list, when the single element being
the string C<,> (comma).
+See also: C<$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>.
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>
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
1;
git.annexia.org / libguestfs.git / blobdiff