.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" $Id: dump.8.in,v 1.19 2000/12/04 15:43:16 stelian Exp $
+.\" $Id: dump.8.in,v 1.22 2001/03/20 20:15:43 stelian Exp $
.\"
.Dd __DATE__
.Dt DUMP 8
.Op Fl L Ar label
.Op Fl s Ar feet
.Op Fl T Ar date
+.Op Fl z Ar compression level
.Ar file-to-dump
.Nm dump
.Op Fl W Li \&| Fl w
but prints only recognized filesystems in
.Pa /etc/fstab
which need to be dumped.
+.It Fl z Ar compression level
+Compress every block to be written on the tape using zlib library. This
+option will work only when dumping to a file or pipe or, when dumping
+to a tape drive, if the tape drive is capable of writing variable
+length blocks. You will need at least the 0.4b22 version of restore in
+order to extract compressed tapes. Tapes written using compression will
+not be compatible with the BSD tape format. The (optional) parameter
+specifies the compression level zlib will use. The default compression
+level is 2.
.El
.Pp
.Nm Dump