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Date:      Tue, 22 Aug 1995 11:39:11 +0300
From:      kallio@jyu.fi (Seppo Kalio)
To:        questions@freebsd.org
Subject:   * Big problems with "IBM OEM 0664M1H" + "SEAGATE ST15230N" *
Message-ID:  <v0153050dac5f364fc32e@[130.234.41.39]>

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Hi,

Is this a known problem with "IBM OEM 0664M1H" + "SEAGATE ST15230N" in AHA2940:

We did install these two disks into same node into same AHA 2940. They seem
NOT to work together!

We have 90% identical CPU with the same Seagate disk + smaller 2G Seagate
in same controller without problems.

Seem that IBM 0664M1H does not work with the fast Seagate disk.

More accurate:

Both have AHA 2940
System1: Intel P90 Plato 32MRAM, 2G IBM 0664 does NOT work with ST15230N
System2: Intel P90 Zappa 64MRAM, 2G IBM 0664 does work with     ST32430N


Errors in /var/log/messages of System1:

Aug 21 16:13:32 kaarna /kernel: sd1(ahc0:1:0): Deferred Error: HARDWARE FAILURE
info:51ef asc:3,0 Peripheral device write fault field replaceable unit: 11 sks:8
0,19

We have two "SEAGATE ST15230N 0298" and same error messages and same problems.

Here boot log in System 1:
Aug 21 15:22:39 kaarna /kernel: Probing for devices on the pci0 bus:
Aug 21 15:22:39 kaarna /kernel:         configuration mode 2 allows 16 devices.
Aug 21 15:22:39 kaarna /kernel: chip0 <Intel 82434LX PCI cache memory controller
> rev 17 on pci0:0
Aug 21 15:22:39 kaarna /kernel: chip1 <Intel 82378IB PCI-ISA bridge> rev 67 on p
ci0:2
Aug 21 15:22:39 kaarna /kernel: ahc0 <Adaptec 294X SCSI host adapter> rev 0 int
a irq 9 on pci0:6
Aug 21 15:22:39 kaarna /kernel: ahc0: reading board settings
Aug 21 15:22:39 kaarna /kernel: ahc0: 294x Single Channel, SCSI Id=7, aic7870, 1
6 SCBs
Aug 21 15:22:39 kaarna /kernel: ahc0: Downloading Sequencer Program...Done
Aug 21 15:22:39 kaarna /kernel: ahc0: Probing channel A
Aug 21 15:22:39 kaarna /kernel: ahc0 waiting for scsi devices to settle
Aug 21 15:22:40 kaarna /kernel: ahc0: target 0 synchronous at 8.0MB/s, offset =
0xf
Aug 21 15:22:40 kaarna /kernel: (ahc0:0:0): "IBM OEM 0664M1H 5 50" type 0 fixed
SCSI 2
Aug 21 15:22:40 kaarna /kernel: sd0(ahc0:0:0): Direct-Access 1920MB (3933040 512
 byte sectors)
Aug 21 15:22:40 kaarna /kernel: ahc0: target 1 synchronous at 10.0MB/s, offset =
 0xf
Aug 21 15:22:40 kaarna /kernel: (ahc0:1:0): "SEAGATE ST15230N 0298" type 0 fixed
 SCSI 2
Aug 21 15:22:40 kaarna /kernel: sd1(ahc0:1:0): Direct-Access 4095MB (8386733 512
 byte sectors)
Aug 21 15:22:40 kaarna /kernel: pci0: uses 4096 bytes of memory from ffbff000 up
to ffbfffff.
Aug 21 15:22:40 kaarna /kernel: pci0: uses 256 bytes of I/O space from fc00 upto
 fcff.

I have heard same problem in a Linux box also: Linux did freeze with AHA
2940 + IBM 0664 + a Fast Seagate. Disk light did blow continuously after
freeze. They did speak about problem in connect/disconnect of the disk(s).
"If you inhibit disconnect, it works".

Seppo

--
 +--    Seppo Kallio       -----             kallio@jyu.fi              ---+
 !    Computing Center       !   Fax +358-41-603611 Phone +358-41-603606   !
 !  University of Jyvaskyla  !         http://www.jyu.fi/~kallio           !
 +--      Finland          --+--            62.14N 25.44E               -- +





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