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To: bugs@freebsd.org
Cc: mouri@sol.cs.ritsumei.ac.jp
Subject: ccd and BOUNCE_BUFFER
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Date: Mon, 27 Jan 1997 21:11:39 +0900
From: Koichi MOURI <mouri@sol.cs.ritsumei.ac.jp>
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 I tried to use ccd(Concatenated Disk Driver) on 2.2-BETA. I
recompired a kernel for ccd and rebooted. And I executed
ccdconfig. But kernel was in a panic.

 Messages:
	vm_bounce_alloc: b_bufsize(0x0) < b_bcount(0x200) !!
	panic: vm_bounce_alloc

 When I comment out "options BOUNCE_BUFFER" and recompile kernel,
ccd works fine (but memory size is only 16MB).

 help me...

 My kernel configure file:
----------------------------
machine         "i386"
cpu             "I486_CPU"
ident           SFX
maxusers        8

options         INET
options         FFS
options         NFS
options         PROCFS
options         "COMPAT_43"
options         SCSI_DELAY=5
options         BOUNCE_BUFFERS
options         FAILSAFE
options         USERCONFIG
options         MAXCONS=2

config          kernel  root on wd0

controller      isa0

controller      fdc0 at isa? port "IO_FD1" bio irq 6 drq 2 vector fdintr
disk            fd0  at fdc0 drive 0

controller      wdc0 at isa? port "IO_WD1" bio irq 14 vector wdintr
disk            wd0  at wdc0 drive 0

controller      aha0 at isa? port "IO_AHA0" bio irq ? drq 5 vector ahaintr
controller      scbus0
device          sd0

device          sc0  at isa? port "IO_KBD" tty irq 1 vector scintr
device          npx0 at isa? port "IO_NPX" irq 13 vector npxintr
device          ed0  at isa? port 0x280 net irq 9 iomem 0xd8000 vector edintr

pseudo-device   loop
pseudo-device   ether
pseudo-device   log
pseudo-device   pty     4
pseudo-device   ccd     1
----------------------------

Koichi MOURI