01-11-2006
Instead of writing to the output of dd to another tape, write it to disk, omitting bad blocks.
The reason is that if this is a text file, omitting a single block could turn several lines in the new file into meaningless garbage.
Sometimes cleaning or replacing the tape drive head will solve the problem of unreadable tape blocks.
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BTAPE(8) Network backup, recovery and verification BTAPE(8)
NAME
btape - Bacula's Tape interface test program
SYNOPSIS
btape [options] device-name
DESCRIPTION
This manual page documents briefly the btape command.
OPTIONS
A summary of options is included below.
-? Show summary of options and commands.
-b bootstrap
Specify a bootstrap file.
-c config
Specify configuration file.
-d nn Set debug level to nn.
-p Proceed inspite of I/O errors.
-t Open the default tape device.
-s No signals (for debugging).
-v Set verbose mode.
COMMANDS
autochanger
test autochanger
bsf backspace file
bsr backspace record
cap list device capabilities
clear clear tape errors
eod go to end of Bacula data for append
eom go to the physical end of medium
fill fill tape, write onto second volume
unfill read filled tape
fsf forward space a file
fsr forward space a record
help print this reference
label write a Bacula label to the tape
load load a tape
quit quit btape
rawfill
use write() to fill tape
readlabel
read and print the Bacula tape label
rectest
test record handling functions
rewind rewind the tape
scan read() tape block by block to EOT and report
scanblocks
Bacula read block by block to EOT and report
status print tape status
test General test Bacula tape functions
weof write an EOF on the tape
wr write a single Bacula block
rr read a single record
rb read a single bacula block
qfill quick fill command
SEE ALSO
bscan(1), bextract(1).
AUTHOR
This manual page was written by Jose Luis Tallon <jltallon@adv-solutions.net>.
Kern Sibbald 26 November 2009 BTAPE(8)