Kern Sibbald wrote:
> Below are a few guesses. They are a large part guesses because you didn't
> specify enough information: please see the Support page on the web site.
My mistake.
System Information:
Server: Dell PowerEdge 2650
OS: CentOS 3.6 (fully updated)
SCSI Card: LSI Logic / Symbios Logic LSI8952U
Tape Unit: Dell PowerVault 132T with LTO-2 drive
Bacula: 1.36.3 (RHEL3 SQLite RPM built by D. Scott Barninger)
Tapeinfo output:
what: /etc/bacula $ tapeinfo -f /dev/sg4
Product Type: Tape Drive
Vendor ID: 'IBM '
Product ID: 'ULTRIUM-TD2 '
Revision: '333K'
Attached Changer: No
SerialNumber: '1110010956'
MinBlock:1
MaxBlock:16777215
SCSI ID: 3
SCSI LUN: 0
Ready: yes
BufferedMode: yes
Medium Type: 0x18
Density Code: 0x40
BlockSize: 0
DataCompEnabled: yes
DataCompCapable: yes
DataDeCompEnabled: yes
CompType: 0x1
DeCompType: 0x1
Block Position: 2
Tape stoptions settings:
st1: Mode 0 options: buffer writes: 1, async writes: 1, read ahead: 1
st1: can bsr: 0, two FMs: 0, fast mteom: 0, auto lock: 0,
st1: defs for wr: 0, no block limits: 0, partitions: 0, s2 log: 0
st1: sysv: 0 nowait: 0
> I suspect that perhaps you forgot to run the btape test command before using
> your tape or perhaps you are using an old Bacula that didn't perform the
> append test.
I did not forget. I ran the btape test successfully on this drive
before putting it into production. I just re-ran it and include the
output at the end of this message.
> The mismatch appears to be because your Device resource is not
> suitable for your drive.
It has worked for several days, switching tapes and appending jobs
nightly to back up data to two different tape pools. I was also able to
successfully restore files from the Monthly-0004 volume yesterday.
> The output from bscan indicates quite a number of
> problems as well, so the usefulness of the tape is questionable.
*nod* I saw those. Perhaps the tape itself is failing.
--[Lance]
Ouput of 'btape /dev/nst1':
what:/etc/bacula $ btape /dev/nst1
Tape block granularity is 1024 bytes.
btape: butil.c:258 Using device: "/dev/nst1" for writing.
btape: btape.c:335 open_dev /dev/nst1 OK
*test
=== Write, rewind, and re-read test ===
I'm going to write 1000 records and an EOF
then write 1000 records and an EOF, then rewind,
and re-read the data to verify that it is correct.
This is an *essential* feature ...
btape: btape.c:786 Wrote 1000 blocks of 64412 bytes.
btape: btape.c:465 Wrote 1 EOF to /dev/nst1
btape: btape.c:802 Wrote 1000 blocks of 64412 bytes.
btape: btape.c:465 Wrote 1 EOF to /dev/nst1
btape: btape.c:811 Rewind OK.
1000 blocks re-read correctly.
Got EOF on tape.
1000 blocks re-read correctly.
=== Test Succeeded. End Write, rewind, and re-read test ===
=== Write, rewind, and position test ===
I'm going to write 1000 records and an EOF
then write 1000 records and an EOF, then rewind,
and position to a few blocks and verify that it is correct.
This is an *essential* feature ...
btape: btape.c:898 Wrote 1000 blocks of 64412 bytes.
btape: btape.c:465 Wrote 1 EOF to /dev/nst1
btape: btape.c:914 Wrote 1000 blocks of 64412 bytes.
btape: btape.c:465 Wrote 1 EOF to /dev/nst1
btape: btape.c:923 Rewind OK.
Reposition to file:block 0:4
Block 5 re-read correctly.
Reposition to file:block 0:200
Block 201 re-read correctly.
Reposition to file:block 0:999
Block 1000 re-read correctly.
Reposition to file:block 1:0
Block 1001 re-read correctly.
Reposition to file:block 1:600
Block 1601 re-read correctly.
Reposition to file:block 1:999
Block 2000 re-read correctly.
=== Test Succeeded. End Write, rewind, and re-read test ===
=== 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:435 Rewound /dev/nst1
btape: btape.c:1505 Wrote one record of 64412 bytes.
btape: btape.c:1507 Wrote block to device.
btape: btape.c:465 Wrote 1 EOF to /dev/nst1
btape: btape.c:1505 Wrote one record of 64412 bytes.
btape: btape.c:1507 Wrote block to device.
btape: btape.c:1505 Wrote one record of 64412 bytes.
btape: btape.c:1507 Wrote block to device.
btape: btape.c:465 Wrote 1 EOF to /dev/nst1
btape: btape.c:1505 Wrote one record of 64412 bytes.
btape: btape.c:1507 Wrote block to device.
btape: btape.c:1505 Wrote one record of 64412 bytes.
btape: btape.c:1507 Wrote block to device.
btape: btape.c:1505 Wrote one record of 64412 bytes.
btape: btape.c:1507 Wrote block to device.
btape: btape.c:465 Wrote 1 EOF to /dev/nst1
btape: btape.c:335 open_dev /dev/nst1 OK
btape: btape.c:435 Rewound /dev/nst1
btape: btape.c:1052 Now moving to end of medium.
btape: btape.c:482 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:1505 Wrote one record of 64412 bytes.
btape: btape.c:1507 Wrote block to device.
btape: btape.c:465 Wrote 1 EOF to /dev/nst1
btape: btape.c:435 Rewound /dev/nst1
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=4, blocks=7, bytes = 451,136
End scanning the tape.
We should be in file 4. I am at file 4. This is 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.
=== Write, backup, and re-read test ===
I'm going to write three records and an EOF
then backup over the EOF and re-read the last record.
Bacula does this after writing the last block on the
tape to verify that the block was written correctly.
This is not an *essential* feature ...
btape: btape.c:435 Rewound /dev/nst1
btape: btape.c:665 Wrote first record of 64412 bytes.
btape: btape.c:676 Wrote second record of 64412 bytes.
btape: btape.c:687 Wrote third record of 64412 bytes.
btape: btape.c:465 Wrote 1 EOF to /dev/nst1
btape: btape.c:703 Backspaced over EOF OK.
btape: btape.c:708 Backspace record OK.
btape: btape.c:726
Block re-read correct. Test succeeded!
=== End Write, backup, and re-read test ===
=== Forward space files test ===
This test is essential to Bacula.
I'm going to write five files then test forward spacing
btape: btape.c:435 Rewound /dev/nst1
btape: btape.c:1505 Wrote one record of 64412 bytes.
btape: btape.c:1507 Wrote block to device.
btape: btape.c:465 Wrote 1 EOF to /dev/nst1
btape: btape.c:1505 Wrote one record of 64412 bytes.
btape: btape.c:1507 Wrote block to device.
btape: btape.c:1505 Wrote one record of 64412 bytes.
btape: btape.c:1507 Wrote block to device.
btape: btape.c:465 Wrote 1 EOF to /dev/nst1
btape: btape.c:1505 Wrote one record of 64412 bytes.
btape: btape.c:1507 Wrote block to device.
btape: btape.c:1505 Wrote one record of 64412 bytes.
btape: btape.c:1507 Wrote block to device.
btape: btape.c:1505 Wrote one record of 64412 bytes.
btape: btape.c:1507 Wrote block to device.
btape: btape.c:465 Wrote 1 EOF to /dev/nst1
btape: btape.c:1505 Wrote one record of 64412 bytes.
btape: btape.c:1507 Wrote block to device.
btape: btape.c:1505 Wrote one record of 64412 bytes.
btape: btape.c:1507 Wrote block to device.
btape: btape.c:465 Wrote 1 EOF to /dev/nst1
btape: btape.c:1505 Wrote one record of 64412 bytes.
btape: btape.c:1507 Wrote block to device.
btape: btape.c:465 Wrote 1 EOF to /dev/nst1
btape: btape.c:435 Rewound /dev/nst1
btape: btape.c:1266 Now forward spacing 1 file.
We should be in file 1. I am at file 1. This is correct!
btape: btape.c:1278 Now forward spacing 2 files.
We should be in file 3. I am at file 3. This is correct!
btape: btape.c:435 Rewound /dev/nst1
btape: btape.c:1291 Now forward spacing 4 files.
We should be in file 4. I am at file 4. This is correct!
btape: btape.c:1309 Now forward spacing 1 more file.
We should be in file 5. I am at file 5. This is correct!
=== End Forward space files test ===
Ah, I see you have an autochanger configured.
To test the autochanger you must have a blank tape
that I can write on in Slot 1.
Do you wish to continue with the Autochanger test? (y/n): y
=== Autochanger test ===
3301 Issuing autochanger "loaded" command.
Slot 7 loaded. I am going to unload it.
3302 Issuing autochanger "unload 7 0" command.
unload status=OK 0
3303 Issuing autochanger "load slot 1 0" command.
3303 Autochanger "load slot 1 0" status is OK.
btape: btape.c:335 open_dev /dev/nst1 OK
btape: btape.c:1196 Rewound /dev/nst1
btape: btape.c:1203 Wrote EOF to /dev/nst1
The test autochanger worked!!
*quit
--
Lance A. Brown
Senior Systems Programmer
ISDS, Duke University
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