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Date:      Wed, 30 Oct 2002 14:16:53 +0100
From:      =?iso-8859-1?B?UmFnbmFyIFdpc2z4ZmY=?= <ragnar@wisloff.no>
To:        aic7xxx@freebsd.org
Subject:   AIC-7896 boot problems
Message-ID:  <1035983813.3dbfdbc54f114@ragnar.mine.nu>

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Hello,

I've upgraded a RHL 6.2 system to RHL 8.0. The upgrade went 
without any problems. At first boot the system will not boot, 
with what seems to be a problem with the aic7xxx driver.

The system has an AIC-7896 with BIOS 2.20S1B1 and Mylex DAC1100 
RAID controller, BIOS 4.10-41. There are five 36GB IBM disks. No 
changes were made to the h/w config after upgrading.

After the upgrade kernel 2.4.18-14 and 2.4.18-14smp are 
installed, LILO is bootloader. After identifying the AIC 7896 
controller, there is no longer a message saying 

scsi: 2 hosts 

as before. Instead it says

blk queue c361ee14, I/O limit 4095MB (mask 0xffffffff)

and then goes on to probe each device in each channel it seems, 
and producing a lot of ouput. 
Kernel Free SCB list: 3 1 0
scsi0: 0:1:0 command already completed
aic7xxx_abort returns 0x2002
scsi: device set offline  - not ready or command retry failed 
after bus reset host xxxxxxxxxx

After trawling the net for a solution I have tried this:
Setting the speed of the devices in the SCSI Select down (to 20).
Booting with pci=noapic
Booting an smp kernel (this stops at the message: oprofile: APIC 
was already enabled)

None of the above has helped. If I leave the system trying to 
boot for long enough (all 16 devices on both channels probed I 
guess), it progesses a bit further until it locks up.

I *can* boot using the RHL 8 CD using linux rescue, dmesg shows 
the same blk queue c361ee14, I/O limit 4095MB (mask 0xffffffff)
message twice, then goes on and lets me get into the rescue 
environment. I find that strange, but hey its a strange world.

Is it possible to bring this system back to life?

Any help appreciated.


--
Mvh Ragnar Wisløff
------------------
life is a reach. then you gybe.

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