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Btape Test - Append Files Test

Posted by Aaron Greenblatt 
Aaron Greenblatt
Btape Test - Append Files Test
July 20, 2017 09:03AM
Hello,

I am attempting to use Bacula on a backup server and am having trouble with
btape test in the append files section. I have read the documentation,
searched on Google, and updated the firmware on my SAS card and tape drive.
I don't see any particularly helpful log messages on the system. Any
thoughts on where I should look to continue troubleshooting this? Could it
have something to do with the SCSI driver in the OS?

Configuration is as follows: Debian 8 with Atto H1280 (also tried H644) SAS
HBA and HP LTO6 tape drive. More details below.

Thank you.

Best,
Aaron

Output from btape:
=== Append files test ===

This test is essential to Bacula.

I'm going to write one record in file 0,
two records in file 1,
and three records in file 2

btape: btape.c:582-0 Rewound "LTO-6" (/dev/nst0)
btape: btape.c:1917-0 Wrote one record of 64412 bytes.
btape: btape.c:1919-0 Wrote block to device.
btape: btape.c:612-0 Wrote 1 EOF to "LTO-6" (/dev/nst0)
btape: btape.c:1917-0 Wrote one record of 64412 bytes.
btape: btape.c:1919-0 Wrote block to device.
btape: btape.c:1917-0 Wrote one record of 64412 bytes.
btape: btape.c:1919-0 Wrote block to device.
btape: btape.c:612-0 Wrote 1 EOF to "LTO-6" (/dev/nst0)
btape: btape.c:1917-0 Wrote one record of 64412 bytes.
btape: btape.c:1919-0 Wrote block to device.
btape: btape.c:1917-0 Wrote one record of 64412 bytes.
btape: btape.c:1919-0 Wrote block to device.
btape: btape.c:1917-0 Wrote one record of 64412 bytes.
btape: btape.c:1919-0 Wrote block to device.
btape: btape.c:612-0 Wrote 1 EOF to "LTO-6" (/dev/nst0)
btape: btape.c:478-0 open device "LTO-6" (/dev/nst0): OK
btape: btape.c:582-0 Rewound "LTO-6" (/dev/nst0)
btape: btape.c:1430-0 Now moving to end of medium.
btape: btape.c:633-0 Moved to end of medium.
We should be in file 3. I am at file 3. This is correct!

Now the important part, I am going to attempt to append to the tape.

btape: btape.c:1917-0 Wrote one record of 64412 bytes.
btape: btape.c:1919-0 Wrote block to device.
btape: btape.c:612-0 Wrote 1 EOF to "LTO-6" (/dev/nst0)
btape: btape.c:582-0 Rewound "LTO-6" (/dev/nst0)
Done appending, there should be no I/O errors

Doing Bacula scan of blocks:
1 block of 64448 bytes in file 1
End of File mark.
2 blocks of 64448 bytes in file 2
End of File mark.
3 blocks of 64448 bytes in file 3
End of File mark.
1 block of 64448 bytes in file 4
End of File mark.
Total files=5, blocks=7, bytes = 451,136
End scanning the tape.
*We should be in file 4. I am at file 5. This is NOT correct!!!!*

The above Bacula scan should have output identical to what follows.
Please double check it ...
=== Sample correct output ===
1 block of 64448 bytes in file 1
End of File mark.
2 blocks of 64448 bytes in file 2
End of File mark.
3 blocks of 64448 bytes in file 3
End of File mark.
1 block of 64448 bytes in file 4
End of File mark.
Total files=4, blocks=7, bytes = 451,136
=== End sample correct output ===

If the above scan output is not identical to the
sample output, you MUST correct the problem
or Bacula will not be able to write multiple Jobs to
the tape.



bacula-sd.conf (I tried this without the Hardware End of File line; same
result):

Device {
Name = LTO-6
Media Type = LTO-6
Device Type = Tape
Archive Device = /dev/nst0
AutomaticMount = yes; # when device opened, read it
AlwaysOpen = yes;
RemovableMedia = yes;
RandomAccess = no;
Maximum File Size = 5GB
Hardware End of File = no
}


tapeinfo -f /dev/sg8

Product Type: Tape Drive
Vendor ID: 'HP '
Product ID: 'Ultrium 6-SCSI '
Revision: '35GD'
Attached Changer API: No
SerialNumber: 'HUJ4321BY1'
MinBlock: 1
MaxBlock: 16777215
SCSI ID: 0
SCSI LUN: 0
Ready: yes
BufferedMode: yes
Medium Type: Not Loaded
Density Code: 0x5a
BlockSize: 0
DataCompEnabled: yes
DataCompCapable: yes
DataDeCompEnabled: yes
CompType: 0x1
DeCompType: 0x1
BOP: yes
Block Position: 0
ActivePartition: 0
EarlyWarningSize: 0
NumPartitions: 0
MaxPartitions: 3
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Re: Btape Test - Append Files Test
July 20, 2017 10:01AM
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