All kernels I made after the new filesystemcodes were introduced crashed with 
message:

	aha:  aha_scsi_cmd, more than 17 DMA segs
	sd0:  not queuedpanic: biodone already

My config:

machine		"i386"
cpu		"I486_CPU"
timezone	-1 dst
maxusers	32	

# "mandatory"
options         SWAPPAGER,VNODEPAGER,DEVPAGER

# all of the networking possibilities known to man
options         INET

# "optional, but generally included"
options         "COMPAT_43"
options         "TCP_COMPAT_42"
options         "COMPAT_09"

# i386 stuff
options         UCONSOLE, XSERVER
options         "DUMMY_NOPS"
options         "COMPAT_NOMID"
options         "MACHINE_NONCONTIG"

# for per-process i386 LDT's
options         "USER_LDT"

# every file system known to man
options         FFS
options         MFS
options         NFSSERVER,NFSCLIENT
#options         MSDOSFS
options		ISOFS
options		FDESC,LOFS


# SysV compat stuff
options         SYSVMSG,SYSVSEM
options		SYSVSHM

# Various "debugging" stuff
options         KTRACE

# loadable kernel modules
options         LKM

# uses the SCSI system (XXX)
options         SCSI

options 	"PCVT_NSCREENS=4"

config		netbsd	root on sd0 swap on sd0 

controller	isa0

controller	fdc0	at isa? port "IO_FD1" irq 6 drq 2
disk		fd0	at fdc0 drive 0
disk		fd1	at fdc0 drive 1

controller	aha0	at isa? port "IO_AHA0" irq 11 drq 5
master		scsibus0 at aha0
disk		sd0	at scsibus0 slave ?
disk		sd1	at scsibus0 slave ?
disk		sd2	at scsibus0 slave ?
disk		sd3	at scsibus0 slave ?
tape		st0	at scsibus0 slave ?
tape		st1	at scsibus0 slave ?
disk		cd0	at scsibus0 slave ?
disk		cd1	at scsibus0 slave ?

device          vt0     at isa? port "IO_KBD" irq 1
device		npx0	at isa? port "IO_NPX" irq 13
device		com0	at isa? port "IO_COM1" irq 4
device		com1	at isa? port "IO_COM2" irq 3

device		lpt0	at isa? port "IO_LPT1" irq 7
device		lms0 	at isa? port 0x23c irq 9

device ed0 at isa? port 0x280 irq 10 iomem 0xd0000

pseudo-device	ether
pseudo-device	log
pseudo-device	loop
pseudo-device	pty	64
pseudo-device	sl	2
pseudo-device   bpfilter 4
pseudo-device   ppp 	2
pseudo-device 	vn 	4
pseudo-device	speaker



Any ideas ?

Thanks, Dieter

-------------------------------------------------------------------------------
 Dieter Bayer                          email: bayer@informatik.uni-leipzig.de  
 Department of Computer Science
 University Leipzig                    voice: +49 341 7192367
 Augustusplatz 10/11
 D - 04109 Leipzig                     FAX:   +49 341 7192399
-------------------------------------------------------------------------------

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