.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.\" $Id: dump.8.in,v 1.21 2001/03/18 15:35:44 stelian Exp $
+.\" $Id: dump.8.in,v 1.24 2001/03/28 12:59:48 stelian Exp $
.\"
.Dd __DATE__
.Dt DUMP 8
.Nd ext2 filesystem backup
.Sh SYNOPSIS
.Nm dump
-.Op Fl 0123456789ackMnSuz
+.Op Fl 0123456789ackMnSu
.Op Fl B Ar records
.Op Fl b Ar blocksize
.Op Fl d Ar density
.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
+.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.
+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