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Backup failed

 
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# 1  
Old 01-02-2008
Backup failed
I'm getting following message at my EOD backup script:
Code:
sh: line1: /dev/rct0: cannot create [Permission Denied]

What could be the possible causes for this error and how could I resolve it?
# 2  
Old 01-02-2008
Is this a SCO server?

What backup utility are you using?

When did this last work?

Has anything changed recently that you know of?

What does ls -l /dev/rct0 show?

This backup is running as root , right?
# 3  
Old 01-02-2008
Is this a SCO server?

Ans: Yes its Sco Unixware.

What backup utility are you using?

Ans: cpio

When did this last work?

Ans: Day before yesterday, last 2 backups failed.

Has anything changed recently that you know of?

Ans: No change at all.

What does ls -l /dev/rct0 show?

Ans: crw-rw-rw- 1 root sys 287, 39 Dec 31 01:57 /dev/rct0

This backup is running as root , right?

Ans: No, its a non-root user, but we always run this script in the same way.
# 4  
Old 01-02-2008
Can you post the below directory permissions?

Code:
ls -ld /
ls -ld /dev
ls -ld /tmp


Can you read a previous backup tape? Are you able to list out the contents of the tape with cpio running as the non-root user?
# 5  
Old 01-02-2008
Code:
$ls -ld /
drwxr-xr-x   37 root     sys            3072 Dec  5 17:58 /
$ls -ld /dev
drwxrwxr-x   20 root     sys           11264 Dec  5 17:59 /dev
$ls -ld /tmp
drwxrwxrwt    4 bin      bin            6144 Jan  2 09:39 /tmp

Yes I'm able to read previous tapes (as non-root user), here is the sample output:
Code:
$cpio -ict < /dev/rct0
home/ArchiveMods/Patch.24159
home/ArchiveMods/Patch.24159_1
home/ArchiveMods/Patch.27461

# 6  
Old 01-02-2008
can you run the cpio backup directly from the command line and duplicate the erorr?

Is the truss command installed on your system? If so can you run
Code:
truss -aef -o /tmp/truss.log cpio_backup_command_here

The permission denied error should be near the bottom of this log and will indicate what cpio is doing when it encounters the permission denied error.
# 7  
Old 01-03-2008
Sorry I can't use the script with truss utility because I don't have the actual script with me, today EOD generated the following error:
Code:
Jan  3 02:06:00 unix1 unix: WARNING: Tape Driver: HA 1 TC 4 LU 0 - CHECK CONDITION:
Jan  3 02:06:01 unix1 unix: A "MEDIUM ERROR" condition has been detected.
Jan  3 02:06:01 unix1 unix: Additional data = "UNRECOVERED READ ERROR".
Jan  3 02:06:01 unix1 unix: Logical block address = 0x55FEFFFF

 
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