.\" 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 1.24 2001/03/28 12:59:48 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
last dump of a lower level.
The default level is 9.
.It Fl B Ar records
-The number of 1 KB blocks per volume.
+The number of 1 kB blocks per volume.
This option overrides the end-of-media detection, and calculation
of tape size based on length and density.
.It Fl a
.It Fl b Ar blocksize
The number of kilobytes per dump record.
Since the IO system slices all requests into chunks of MAXBSIZE
-(typically 64KB), it is not possible to use a larger blocksize
+(typically 64kB), it is not possible to use a larger blocksize
without having problems later with
.Xr restore 8 .
Therefore
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
.Sh AUTHOR
The
.Nm dump/restore
-backup suit was ported to Linux's Second Extended File System
+backup suite was ported to Linux's Second Extended File System
by Remy Card <card@Linux.EU.Org>. He maintained the initial versions
of dump (up and including 0.4b4, released in january 1997).
.Pp
.Sh AVAILABILITY
The
.Nm dump/restore
-backup suit is available from
+backup suite is available from
.br
http://dump.sourceforge.net
.Sh HISTORY