On Thursday 19 January 2006 20:59, Lance Brown wrote:
> 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)
Yes, this is important because it means that you have a very standard
configuration that should not be having the kinds of problems you are seeing.
The only thing in the above that catches my attention is the SCSI card, about
which I know nothing.
>
> 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.
I'm happy to see you proved my guess wrong :-)
In that case, all I can say is that your output is wierd. Please take a
careful look at Arno's suggestions ...
>
> > 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
--
Best regards,
Kern
(">
/\
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