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Date:      Fri, 6 Sep 1996 16:54:34 +0100 (BST)
From:      Gordon Henderson <gordon@drogon.net>
To:        questions@freebsd.org, scsi@freebsd.org
Subject:   CCD Setup woes ... (Kernel Panic)
Message-ID:  <Pine.LNX.3.91.960906150432.342A-100000@unicorn>

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I'm tring to get a CCD going as an experiment and it's causing the kernel
to panic. 

The hardware is: ASUS P120 motherboard, 128MB RAM, crappy old Adaptec ISA
card (aha driver) and 3 x Maxtor 2GB drives. (ISA video, no ether yet)

I'm using the adaptec card until I get some decent buslogic PCI cards. 
(I've had LOTS of problems with Adaptec 2940 PCI cards!)

Drive 0 is the root disk and has /, swap, /usr and /var. Drives 1 & 2 are
setup identical, 64MB swap partition (b) and the rest empty (partition f)
for the ccd. (I'm not using the swap partitions yet, but read that it was
a bad thing the have the ccd partitions at the start of the disk)

I built a kernel with the ccd driver present as it says in the man page, 
did a cd /dev ; sh MAKEDEV ccd0 with no problems. Then I did:

  ccdconfig -c -v ccd0 32 none /dev/sd1f /dev/sd2f

which resulted in a kernel panic. The message is:

  vm_bounce_alloc: b_bufsize(0x80) < b_count(0x200) !!
  panic: vm_bounce_alloc

followed by the usual syncing disks bit. The number in the b_bufsize() 
varies from crash to crash.

Am I doing anything obviously wrong?

Gordon



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