Hi all,
While setting up a new tape library with HP LTO6 drives, btape test runs
successfully, but btape fill fails with what looks like a problem handling the
last block on the tape (perhaps an off-by-one error?). The outputs below are
repeatable with both LTO6 and LTO4 media, but I've been able to do a multi-tape
backup and restore OK; so I think the problem is isolated to btape rather than
Bacula-sd and any common code between them. Will do some more testing, but
obviously filling multiple LTO6 tapes takes a little while!
Has anyone seen this before?
This is on Solaris 5.11 (x86_64) running Bacula 5.2.13, locally compiled.
------------
btape output:
..snip..
Wrote block=19090000, file,blk=954,10936 VolBytes=2,499,540,811,776 rate=107.7
MB/s
19-Mar 15:23 btape JobId 0: End of Volume "TestVolume1" at 954:11250 on device
"drive-0-tapestore1" (/dev/rmt/0mbn). Write of 131072 bytes got 0.
19-Mar 15:23 btape JobId 0: Error: Backspace record at EOT failed. ERR=I/O error
btape: btape.c:2714-0 Last block at: 954:11249 this_dev_block_num=11250
btape: btape.c:2749-0 End of tape 954:-1. Volume Bytes=2,499,581,968,384. Write
rate = 107.7 MB/s
btape: btape.c:2320-0 Wrote 1000 blocks on second tape. Done.
Done writing 0 records ...
btape: btape.c:2389-0 Wrote state file last_block_num1=11249 last_block_num2=0
btape: btape.c:2404-0
15:23:52 Done filling tape at 954:-1. Now beginning re-read of tape ...
btape: btape.c:2485-0 Enter do_unfill
19-Mar 15:24 btape JobId 0: Ready to read from volume "TestVolume1" on device
"drive-0-tapestore1" (/dev/rmt/0mbn).
Rewinding.
Reading the first 10000 records from 0:0.
10000 records read now at 1:2502
Reposition from 1:2502 to 954:11249
Reposition error. ERR=dev.c:1366 ioctl MTFSR 11249 error on
"drive-0-tapestore1" (/dev/rmt/0mbn). ERR=I/O error.
btape: btape.c:2412-0 do_unfill failed.
------------
tapeinfo -f /dev/rmt/0mbn
Product Type: Tape Drive
Vendor ID: 'HP '
Product ID: 'Ultrium 6-SCSI '
Revision: '338B'
Attached Changer API: No
SerialNumber: 'xxxxxxxx'
MinBlock: 1
MaxBlock: 16777215
Ready: no
------------
Relevant Bacula-sd.conf snippet:
Autochanger {
Name = tapestore1-autochanger
Device = drive-0-tapestore1, drive-1-tapestore1
Device = drive-2-tapestore1, drive-3-tapestore1
Changer Device = /dev/scsi/changer/c1t5d1
Changer Command = "/opt/bacula/etc/mtx-changer %c %o %S %a %d"
}
Device {
Name = drive-0-tapestore1
Archive Device = /dev/rmt/0mbn
Device Type = Tape
Media Type = LT06
AutoChanger = yes
Removable media = yes;
Label Media = no
Random access = no;
Requires Mount = no;
Maximum Changer Wait = 180
Drive Index = 0
Maximum Spool Size = 100G
}
------------
Full btape test output:
Tape block granularity is 1024 bytes.
btape: butil.c:290-0 Using device: "/dev/rmt/0mbn" for writing.
btape: btape.c:477-0 open device "drive-0-tapestore1" (/dev/rmt/0mbn): OK
*test
=== Write, rewind, and re-read test ===
I'm going to write 10000 records and an EOF
then write 10000 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:1157-0 Wrote 10000 blocks of 130972 bytes.
btape: btape.c:609-0 Wrote 1 EOF to "drive-0-tapestore1" (/dev/rmt/0mbn)
btape: btape.c:1173-0 Wrote 10000 blocks of 130972 bytes.
btape: btape.c:609-0 Wrote 1 EOF to "drive-0-tapestore1" (/dev/rmt/0mbn)
btape: btape.c:1215-0 Rewind OK.
10000 blocks re-read correctly.
Got EOF on tape.
10000 blocks re-read correctly.
=== Test Succeeded. End Write, rewind, and re-read test ===
btape: btape.c:1283-0 Block position test
btape: btape.c:1295-0 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 0:9999
Block 10000 re-read correctly.
Reposition to file:block 1:0
Block 10001 re-read correctly.
Reposition to file:block 1:600
Block 10601 re-read correctly.
Reposition to file:block 1:9999
Block 20000 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:579-0 Rewound "drive-0-tapestore1" (/dev/rmt/0mbn)
btape: btape.c:1914-0 Wrote one record of 130972 bytes.
btape: btape.c:1916-0 Wrote block to device.
btape: btape.c:609-0 Wrote 1 EOF to "drive-0-tapestore1" (/dev/rmt/0mbn)
btape: btape.c:1914-0 Wrote one record of 130972 bytes.
btape: btape.c:1916-0 Wrote block to device.
btape: btape.c:1914-0 Wrote one record of 130972 bytes.
btape: btape.c:1916-0 Wrote block to device.
btape: btape.c:609-0 Wrote 1 EOF to "drive-0-tapestore1" (/dev/rmt/0mbn)
btape: btape.c:1914-0 Wrote one record of 130972 bytes.
btape: btape.c:1916-0 Wrote block to device.
btape: btape.c:1914-0 Wrote one record of 130972 bytes.
btape: btape.c:1916-0 Wrote block to device.
btape: btape.c:1914-0 Wrote one record of 130972 bytes.
btape: btape.c:1916-0 Wrote block to device.
btape: btape.c:609-0 Wrote 1 EOF to "drive-0-tapestore1" (/dev/rmt/0mbn)
btape: btape.c:477-0 open device "drive-0-tapestore1" (/dev/rmt/0mbn): OK
btape: btape.c:579-0 Rewound "drive-0-tapestore1" (/dev/rmt/0mbn)
btape: btape.c:1427-0 Now moving to end of medium.
btape: btape.c:630-0 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:1914-0 Wrote one record of 130972 bytes.
btape: btape.c:1916-0 Wrote block to device.
btape: btape.c:609-0 Wrote 1 EOF to "drive-0-tapestore1" (/dev/rmt/0mbn)
btape: btape.c:579-0 Rewound "drive-0-tapestore1" (/dev/rmt/0mbn)
Done appending, there should be no I/O errors
Doing Bacula scan of blocks:
1 block of 131008 bytes in file 1
End of File mark.
2 blocks of 131008 bytes in file 2
End of File mark.
3 blocks of 131008 bytes in file 3
End of File mark.
1 block of 131008 bytes in file 4
End of File mark.
Total files=4, blocks=7, bytes = 917,056
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:579-0 Rewound "drive-0-tapestore1" (/dev/rmt/0mbn)
btape: btape.c:816-0 Wrote first record of 130972 bytes.
btape: btape.c:827-0 Wrote second record of 130972 bytes.
btape: btape.c:838-0 Wrote third record of 130972 bytes.
btape: btape.c:609-0 Wrote 1 EOF to "drive-0-tapestore1" (/dev/rmt/0mbn)
btape: btape.c:854-0 Backspaced over EOF OK.
btape: btape.c:859-0 Backspace record OK.
btape: btape.c:877-0
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:579-0 Rewound "drive-0-tapestore1" (/dev/rmt/0mbn)
btape: btape.c:1914-0 Wrote one record of 130972 bytes.
btape: btape.c:1916-0 Wrote block to device.
btape: btape.c:609-0 Wrote 1 EOF to "drive-0-tapestore1" (/dev/rmt/0mbn)
btape: btape.c:1914-0 Wrote one record of 130972 bytes.
btape: btape.c:1916-0 Wrote block to device.
btape: btape.c:1914-0 Wrote one record of 130972 bytes.
btape: btape.c:1916-0 Wrote block to device.
btape: btape.c:609-0 Wrote 1 EOF to "drive-0-tapestore1" (/dev/rmt/0mbn)
btape: btape.c:1914-0 Wrote one record of 130972 bytes.
btape: btape.c:1916-0 Wrote block to device.
btape: btape.c:1914-0 Wrote one record of 130972 bytes.
btape: btape.c:1916-0 Wrote block to device.
btape: btape.c:1914-0 Wrote one record of 130972 bytes.
btape: btape.c:1916-0 Wrote block to device.
btape: btape.c:609-0 Wrote 1 EOF to "drive-0-tapestore1" (/dev/rmt/0mbn)
btape: btape.c:1914-0 Wrote one record of 130972 bytes.
btape: btape.c:1916-0 Wrote block to device.
btape: btape.c:1914-0 Wrote one record of 130972 bytes.
btape: btape.c:1916-0 Wrote block to device.
btape: btape.c:609-0 Wrote 1 EOF to "drive-0-tapestore1" (/dev/rmt/0mbn)
btape: btape.c:1914-0 Wrote one record of 130972 bytes.
btape: btape.c:1916-0 Wrote block to device.
btape: btape.c:609-0 Wrote 1 EOF to "drive-0-tapestore1" (/dev/rmt/0mbn)
btape: btape.c:579-0 Rewound "drive-0-tapestore1" (/dev/rmt/0mbn)
btape: btape.c:1641-0 Now forward spacing 1 file.
We should be in file 1. I am at file 1. This is correct!
btape: btape.c:1653-0 Now forward spacing 2 files.
We should be in file 3. I am at file 3. This is correct!
btape: btape.c:579-0 Rewound "drive-0-tapestore1" (/dev/rmt/0mbn)
btape: btape.c:1666-0 Now forward spacing 4 files.
We should be in file 4. I am at file 4. This is correct!
btape: btape.c:1684-0 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): n
*
Regards,
Ben Roberts
This email and any files transmitted with it contain confidential and
proprietary information and is solely for the use of the intended recipient.
If you are not the intended recipient please return the email to the sender and
delete it from your computer and you must not use, disclose, distribute, copy,
print or rely on this email or its contents. This communication is for
informational purposes only. It is not intended as an offer or solicitation
for the purchase or sale of any financial instrument or as an official
confirmation of any transaction. Any comments or statements made herein do
not necessarily reflect those of GSA Capital. GSA Capital Partners LLP is
authorised and regulated by the Financial Conduct Authority and is registered
in England and Wales at Stratton House, 5 Stratton Street, London W1J 8LA,
number OC309261. GSA Capital Services Limited is registered in England and
Wales at the same address, number 5320529.
------------------------------------------------------------------------------
_______________________________________________
Bacula-users mailing list
Bacula-users AT lists.sourceforge DOT net
https://lists.sourceforge.net/lists/listinfo/bacula-users
|
