Hi Michael,

tar is not checking while writing, but bacula does. Is the read error on subsequent tests failing at the same block ?

29-Oct 21:27 btape JobId 0: Error: block.c:995 Read error on fd=3 at file:blk 0:1000

I'd suggest cleaning the tape head anyway (how frequently do you do it ?), reformat the tape, and check again.

Michael

On 10/30/07, Michael Galloway <mgx@ornl.gov> wrote:
seem to be having some scsi problems with btape test. this test is with
a spectra T50/LTO-4 attached via an LSI LSIU320 controller. i ran 100GB
of data onto the drive with tar with no issue. but when i run this:

./btape -c bacula-sd.conf /dev/nst0

test

i get:

*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:827 Wrote 1000 blocks of 64412 bytes.
btape: btape.c:501 Wrote 1 EOF to "LTO4" (/dev/nst0)
btape: btape.c:843 Wrote 1000 blocks of 64412 bytes.
btape: btape.c:501 Wrote 1 EOF to "LTO4" (/dev/nst0)
btape: btape.c:852 Rewind OK.
1000 blocks re-read correctly.
29-Oct 21:27 btape JobId 0: Error: block.c:995 Read error on fd=3 at file:blk 0:1000 on device "LTO4" (/dev/nst0). ERR=No such device or address.
btape: btape.c:864 Read block 1001 failed! ERR=No such device or address

and i the kernel ring buffer log:

st0: Block limits 1 - 16777215 bytes.
mptbase: ioc0: LogInfo(0x11010f00): F/W: bug! MID not found
mptbase: ioc0: LogInfo(0x11010f00): F/W: bug! MID not found
mptbase: ioc0: IOCStatus(0x004b): SCSI IOC Terminated
st0: Error 80000 (sugg. bt 0x0, driver bt 0x0, host bt 0x8).
mptscsih: ioc0: attempting task abort! (sc=ffff81011bf35240)
st 5:0:15:0:
        command: Read(6): 08 00 00 fc 00 00
mptbase: Initiating ioc0 recovery
mptscsih: ioc0: task abort: SUCCESS (sc=ffff81011bf35240)
mptbase: ioc0: IOCStatus(0x0043): SCSI Device Not There
mptscsih: ioc0: attempting target reset! (sc=ffff81011bf35240)
st 5:0:15:0:
        command: Read(6): 08 00 00 fc 00 00
mptscsih: ioc0: target reset: SUCCESS (sc=ffff81011bf35240)
mptbase: ioc0: IOCStatus(0x0043): SCSI Device Not There
mptscsih: ioc0: attempting bus reset! (sc=ffff81011bf35240)
st 5:0:15:0:
        command: Read(6): 08 00 00 fc 00 00
mptscsih: ioc0: bus reset: SUCCESS (sc=ffff81011bf35240)
mptbase: ioc0: IOCStatus(0x0047): SCSI Protocol Error
mptscsih: ioc0: Attempting host reset! (sc=ffff81011bf35240)
mptbase: Initiating ioc0 recovery
mptbase: ioc0: IOCStatus(0x0047): SCSI Protocol Error
st 5:0:15:0: scsi: Device offlined - not ready after error recovery
st0: Error 80000 (sugg. bt 0x0, driver bt 0x0, host bt 0x8).
target5:0:15: Beginning Domain Validation
target5:0:15: Domain Validation skipping write tests
target5:0:15: Ending Domain Validation
target5:0:15: FAST-80 WIDE SCSI 160.0 MB/s DT (12.5 ns, offset 126)
target5:0:15: Beginning Domain Validation
target5:0:15: Domain Validation skipping write tests
target5:0:15: Ending Domain Validation
target5:0:15: FAST-80 WIDE SCSI 160.0 MB/s DT (12.5 ns, offset 126)
target5:0:15: Beginning Domain Validation
target5:0:15: Domain Validation skipping write tests
target5:0:15: Ending Domain Validation
target5:0:15: FAST-80 WIDE SCSI 160.0 MB/s DT ( 12.5 ns, offset 126)
target5:0:15: Beginning Domain Validation
target5:0:15: Domain Validation skipping write tests
target5:0:15: Ending Domain Validation
target5:0:15: FAST-80 WIDE SCSI 160.0 MB/s DT (12.5 ns, offset 126)

i've reseated my cables and terminator. reseated the scsi card. any idea
where the problem is? this is centOS 5, kernel is:

2.6.18-8.1.14.el5 #1 SMP Thu Sep 27 19:05:32 EDT 2007 x86_64 x86_64 x86_64 GNU/Linux

-- michael

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--
Michael Lewinger
MBR Computers
http://mbrcomp.co.il