incremental filesystem dump
/usr/sbin/ufsdump [options [arguments]] filesystem
backs up all files in
represents a special device,
or files changed after a certain date,
to magnetic tape;
is a string that specifies
options, as shown below.
Any arguments supplied for specific options are given as
subsequent words on the command line, in the same order as that of
the options listed.
are given, the default is
The dump level.
All files in the
that have been modified since the last
at a lower dump level are copied to the volume.
if you did a
dump on Monday,
followed by a
dump on Tuesday,
dump on Wednesday would contain
all files modified or added
since the level
dump copies the entire filesystem to the dump volume.
Specify the blocking factor for tape writes.
The default is 20 blocks per write.
The blocking factor is
specified in terms of 512-byte blocks,
for compatibility with
The default blocking factor for tapes of
density 6250BPI and greater is 64.
The default blocking factor for cartridge tapes
option specified) is 126.
The highest blocking
factor available with most tape drives is 126.
Use a cartridge instead of the standard
This sets the density to 1000BPI
and the blocking factor to 126.
The length is set to 425 feet.
This option is incompatible with the
option, unless you specify a density of
1000BPI with that option.
The density of the tape, expressed in
is taken from
This is used to keep a running tab on
the amount of tape used per reel.
The default density is 1600 except for
Unless a higher density is specified explicitly,
uses its default density -- even if the tape drive
is capable of higher-density operation (for instance,
The density specified should correspond to the
density of the tape device being used, or
will not be able to handle end-of-tape properly.
as the file to dump to, instead of
is specified as
dump to the standard output.
Notify all operators in the operator group
requires attention by sending messages to their terminals,
in a manner similar to that used by the wall command.
of the volume being dumped to.
When the specified size is reached,
waits for you to change the volume.
interprets the specified size as the length in
feet for tapes and cartridges, and
as the number of 1024-byte blocks for diskettes.
The following are defaults:
1422 blocks (corresponds
to a 1.44 Mb diskette, with one cylinder reserved
for bad block information)
Specify the number of tracks for a cartridge tape.
The default is 9 tracks.
The t option
is not compatible with
the D option.
Update the dump record.
Add an entry to the file
for each filesystem successfully dumped that
includes the filesystem name, date, and dump level.
This file can be edited by a privileged user.
List the filesystems that need backing up.
This information is gleaned from the files
/etc/dumpdates and /etc/vfstab.
When the w option is used,
all other options are ignored.
ufsdump exits immediately.
Similar to the
except that the W option
includes all filesystems that appear in
along with information about their most recent dump
dates and levels.
File systems that need backing up are highlighted.
default unit to dump to
dump date record
to find group operator
Fewer than 32 read errors on the filesystem are
Each reel requires a new process, so parent
processes for reels already written just hang around
until the entire tape is written.
It is recommended that incremental dumps also be
the system running in single-user mode.
© 2004 The SCO Group, Inc. All rights reserved.
UnixWare 7 Release 7.1.4 - 25 April 2004