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Bacula - testing tape
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This page contains the results of testing a tape drive with the
Bacula tool # /usr/local/sbin/btape -c /usr/local/etc/bacula-sd.conf /dev/nrsa1 Tape block granularity is 1024 bytes. btape: butil.c:149 Using device: /dev/nrsa1 for writing. *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:380 Rewound /dev/nrsa1 btape: btape.c:845 Wrote one record of 64412 bytes. btape: btape.c:847 Wrote block to device. btape: btape.c:403 Wrote EOF to /dev/nrsa1 btape: btape.c:845 Wrote one record of 64412 bytes. btape: btape.c:847 Wrote block to device. btape: btape.c:845 Wrote one record of 64412 bytes. btape: btape.c:847 Wrote block to device. btape: btape.c:403 Wrote EOF to /dev/nrsa1 btape: btape.c:845 Wrote one record of 64412 bytes. btape: btape.c:847 Wrote block to device. btape: btape.c:845 Wrote one record of 64412 bytes. btape: btape.c:847 Wrote block to device. btape: btape.c:845 Wrote one record of 64412 bytes. btape: btape.c:847 Wrote block to device. btape: btape.c:403 Wrote EOF to /dev/nrsa1 btape: btape.c:380 Rewound /dev/nrsa1 btape: btape.c:685 Now moving to end of medium. btape: btape.c:420 Moved to end of medium. We should be in file 3. I am at file -1. This is NOT correct!!!! Append test failed. Attempting again. Setting "Hardware End of Medium = no" and retrying append 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:380 Rewound /dev/nrsa1 btape: btape.c:845 Wrote one record of 64412 bytes. btape: btape.c:847 Wrote block to device. btape: btape.c:403 Wrote EOF to /dev/nrsa1 btape: btape.c:845 Wrote one record of 64412 bytes. btape: btape.c:847 Wrote block to device. btape: btape.c:845 Wrote one record of 64412 bytes. btape: btape.c:847 Wrote block to device. btape: btape.c:403 Wrote EOF to /dev/nrsa1 btape: btape.c:845 Wrote one record of 64412 bytes. btape: btape.c:847 Wrote block to device. btape: btape.c:845 Wrote one record of 64412 bytes. btape: btape.c:847 Wrote block to device. btape: btape.c:845 Wrote one record of 64412 bytes. btape: btape.c:847 Wrote block to device. btape: btape.c:403 Wrote EOF to /dev/nrsa1 btape: btape.c:380 Rewound /dev/nrsa1 btape: btape.c:685 Now moving to end of medium. btape: btape.c:420 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:845 Wrote one record of 64412 bytes. btape: btape.c:847 Wrote block to device. btape: btape.c:403 Wrote EOF to /dev/nrsa1 btape: btape.c:380 Rewound /dev/nrsa1 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. Total files=3, blocks=6, bytes = 386,688 End scanning the tape. We should be in file 4. I am at file 3. This is NOT correct!!!! It looks like the append failed. Attempting again. Setting "BSF at EOM = yes" and retrying append 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:380 Rewound /dev/nrsa1 btape: btape.c:845 Wrote one record of 64412 bytes. btape: btape.c:847 Wrote block to device. btape: btape.c:403 Wrote EOF to /dev/nrsa1 btape: btape.c:845 Wrote one record of 64412 bytes. btape: btape.c:847 Wrote block to device. btape: btape.c:845 Wrote one record of 64412 bytes. btape: btape.c:847 Wrote block to device. btape: btape.c:403 Wrote EOF to /dev/nrsa1 btape: btape.c:845 Wrote one record of 64412 bytes. btape: btape.c:847 Wrote block to device. btape: btape.c:845 Wrote one record of 64412 bytes. btape: btape.c:847 Wrote block to device. btape: btape.c:845 Wrote one record of 64412 bytes. btape: btape.c:847 Wrote block to device. btape: btape.c:403 Wrote EOF to /dev/nrsa1 btape: btape.c:380 Rewound /dev/nrsa1 btape: btape.c:685 Now moving to end of medium. btape: btape.c:420 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:845 Wrote one record of 64412 bytes. btape: btape.c:847 Wrote block to device. btape: btape.c:403 Wrote EOF to /dev/nrsa1 btape: btape.c:380 Rewound /dev/nrsa1 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! It looks like the test worked this time, please add: Hardware End of Medium = No BSF at EOM = yes to your Device resource in the Storage conf file. 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 = 451136 === 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 two eof's then backup over the eof's 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. It is not an *essential* feature ... btape: btape.c:380 Rewound /dev/nrsa1 btape: btape.c:587 Wrote first record of 64412 bytes. btape: btape.c:598 Wrote second record of 64412 bytes. btape: btape.c:609 Wrote third record of 64412 bytes. btape: btape.c:403 Wrote EOF to /dev/nrsa1 btape: btape.c:403 Wrote EOF to /dev/nrsa1 btape: btape.c:621 Backspaced over two EOFs OK. btape: btape.c:626 Backspace record OK. btape: btape.c:642 Block re-read correct. Test succeeded! === End Write, backup, and re-read test === === End Append files test === *The good news is no problems. The bad news, if you can call it that, is btape has made some suggestions for improvement. I altered my storage device to include the following: Hardware End of Medium = No BSF at EOM = yes |