fbackup Error

[Hans Jungbluth]

Hi,
I keep on getting this error during backup with fbackup command. Any ideas... BTW, I'm new to UX.
Tx,
Hans.

fbackup(1421): no history is available for graph file /usr/xmg/adm/bck/graphinc
(below level 0)
fbackup(1004): session begins on Thu Oct 10 04:47:45 2002
fbackup(1517): /net not backed up - 'n' option (NFS) not specified
fbackup(3205): WARNING: unable to read a volume header
fbackup(3024): writing volume 1 to the output file /dev/rmt/c1t0d0BEST
fbackup(9999): I/O error
fbackup(3120): write error on a record in the index
fbackup(3025): write error at the beginning of the volume
fbackup(3316): enter 'yes' when volume 1 is ready on /dev/rmt/c1t0d0BEST,
or 'no' to discontinue:
fbackup(3004): writer aborting
fbackup(1002): Backup did not complete : Reader or Writer process exit

[James R. Ferguson]

Hi Hans:

First, make sure that the tape is write-enabled. The I/O error, if returned immediately suggestes that it is not. For your reference, whenever 'fbackup' asks "yes" or "no" it expects exactly that; not "y", but "yes"; not "n" but "no". Actually, any response other than "yes" is considered "no". The case (upper or lower) matters too.

Regards!

...JRF...

[Bill Hassell · Accepted solution]

You have a bad tape. Replace it with a new tape and start the process. The words I/O error are virtually always hardware problems. If this is a DDS tape, make sure you use real DDS media and not DAT media (which is very inferior for data backup).

If a new tape does not fix the problem, make sure you are using the right tape media. There are 4 DDS standards and using a higher standard in a lower drive will either: jam the mechanism, get lots of errors, or be popped out automatically by the drive's media recognition firmware.