[linux-help] SCSI problems

[Jonathan Hall <jonhall@xxxxxxxxxxxx>]

I recently purchased a couple 9gb SCSI hard drives... they're actually SCA
drives (with the 80-pin connectors).  I've purchased the necessary
adaptors... I've plugged them in... and now I'm having problems.

I initially had an Advansys SCSI card... I've recently replaced it with a
Tekram UW SCSI card.  The same problem happens with both cards.

All my other SCSI devices function properly... just these 9gb SCA drives I'm
having problems with.

Current setup:

$ cat /proc/scsi/scsi
Attached devices: 
Host: scsi0 Channel: 00 Id: 01 Lun: 00
  Vendor: QUANTUM  Model: VIKING 2.3 SCA   Rev: 880R
  Type:   Direct-Access                    ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 02 Lun: 00
  Vendor: SONY     Model: CD-ROM CDU625    Rev: 1.0r
  Type:   CD-ROM                           ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 03 Lun: 00
  Vendor: TEAC     Model: CD-R55S          Rev: 1.0F
  Type:   CD-ROM                           ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 04 Lun: 00
  Vendor: TANDEM   Model: 4585-3 *  cs  m# Rev: 03A0
  Type:   Direct-Access                    ANSI SCSI revision: 03

dmesg shows:

Detected scsi disk sdb at scsi0, channel 0, id 4, lun 0
sym53c875E-0-<1,0>: tagged command queue depth set to 8
sym53c875E-0-<4,0>: tagged command queue depth set to 8
scsi : detected 4 SCSI generics 2 SCSI cdroms 2 SCSI disks total.
sym53c875E-0-<2,*>: FAST-20 SCSI 20.0 MB/s (50 ns, offset 15)
sr0: scsi3-mmc drive: 24x/24x cd/rw xa/form2 cdda tray
Uniform CD-ROM driver Revision: 3.09
sym53c875E-0-<3,*>: FAST-10 SCSI 10.0 MB/s (100 ns, offset 15)
sym53c875E-0-<1,*>: FAST-20 WIDE SCSI 40.0 MB/s (50 ns, offset 16)
SCSI device sda: hdwr sector= 512 bytes. Sectors= 4446801 [2171 MB] [2.2 GB]
sym53c875E-0-<4,0>: M_REJECT received (1:8).
sym53c875E-0-<4,0>: M_REJECT received (1:8).
sym53c875E-0: SCSI phase error fixup: CCB already dequeued.
sym53c875E-0: restart (scsi reset).
sym53c875E-0: Downloading SCSI SCRIPTS.
sym53c875E-0-<4,0>: phase change 6-7 7@07f9545c resid=4.
sym53c875E-0-<4,0>: M_REJECT received (1:80).
sym53c875E-0-<4,*>: FAST-20 WIDE SCSI 40.0 MB/s (50 ns, offset 15)
sym53c875E-0-<4,0>: M_REJECT received (1:8).
sdb : unsupported sector size 514.
scsi : deleting disk entry.

dmesg also shows, later:
scsi0 channel 0 : resetting for second half of retries.
SCSI bus is being reset for host 0 channel 0.
sym53c8xx_reset: pid=6028 reset_flags=1 serial_number=0
serial_number_at_timeout
=0
scsi0: device driver called scsi_done() for a syncronous reset.
sym53c875E-0: restart (scsi reset).
sym53c875E-0: Downloading SCSI SCRIPTS.
sym53c875E-0-<1,*>: FAST-20 WIDE SCSI 40.0 MB/s (50 ns, offset 16)
SCSI disk error : host 0 channel 0 id 1 lun 0 return code = 18000002
[valid=0] Info fld=0x0, Current sd08:01: sense key Aborted Command
Additional sense indicates Scsi parity error
scsidisk I/O error: dev 08:01, sector 8


It shows that last part numerous times... that seems to be related to the
2.2gb Quantum drive... which, incidentally, seems to work anyway.

The symptoms I'm having are:

Both 9gb drives appear as:
Host: scsi0 Channel: 00 Id: 04 Lun: 00
  Vendor: TANDEM   Model: 4585-3 *  cs  m# Rev: 03A0
  Type:   Direct-Access                    ANSI SCSI revision: 03

Vendor TANDEM?!?  What's that?  These are IBM drives...

And Model 4585-3 *  cs  m# ???   In the SCSI bios, there are many other
characters--where you see spaces there.  They're all high-ascii characters.

When I attempt to mount /dev/sdb it says:
mount: /dev/sdb is not a valid block device

Which I guess makes some sense since previously dmesg said it removed sdb...

So now my question is:  What's the problem? :-)

Both IBM drive behave identically, which would seem to me to indicate that
it's not a hardware problem with the drives... it'd be rare to get two
drives displaying these exact same problems.

I'd suspect a problem with the SCA -> SCSI-68 adaptor... but my 2.2gb drive
is an SCA drive, too, and the adaptors all work fine there.

I was able to do a low-level format of one of the 9gb drives from the SCSI
BIOS utility... although it had no effect on my ability to access the drive.

Anyone have any ideas?

Thanks!


--
"Yes, the president should resign. He has lied to the American people, time
and time again, and betrayed their trust. He is no longer an effective
leader.  Since he has admitted guilt, there is no reason to put the American
people through an impeachment. He will serve absolutely no purpose in
finishing out his term, the only possible solution is for the president to
save some dignity and resign."
      -- William Jefferson Clinton, 1974 on President Nixon.
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