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Date:      Wed, 25 Dec 1996 17:24:35 +0100
From:      Andreas Klemm <andreas@klemm.gtn.com>
To:        Joerg Wunsch <joerg@freefall.freebsd.org>
Cc:        freebsd-bugs@freefall.freebsd.org
Subject:   Re: kern/1989 
Message-ID:  <199612251624.RAA01198@klemm.gtn.com>
In-Reply-To: Your message of "Mon, 23 Dec 1996 11:06:15 PST." <199612231906.LAA16344@freefall.freebsd.org> 

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--==_Exmh_6422084240
Content-Type: text/plain; charset=us-ascii

> Synopsis: dump(8) fails to dump if tagged command queuing is enabled
> 
> State-Changed-From-To: open-feedback
> State-Changed-By: joerg
> State-Changed-When: Mon Dec 23 20:04:30 MET 1996
> State-Changed-Why: 
> (Note: i've made this PR non-conifential, since it's nothing
> security-related or any other kind of confidential information.)
> 
> Please confirm: does the problem still exist with the recent driver?

The problem still exists and is easy to reproduce.
Compile/link/install a kernel with Tagged Command Queuing enabled.
Try to make a backup using dump.
After that your SCSI bus freezes.
The one and last message you see from syslog:
sd0(ahc0:0:0) Tagged openings reduced to 3.

I have an AHA 2940 and IBM DORS 32160 SCSI DISKS. For backup I use
a TDC 4222 5 GB QIC streamer.

My system/kernel: FreeBSD-current as of yesterday. Kernel as of today.
My kernel config file is in the attachement.

	Andreas ///


--==_Exmh_6422084240
Content-Type: application/octet-stream ; name="BISDN"
Content-Description: BISDN
Content-Disposition: attachment; filename="BISDN"

machine		"i386"
cpu		"I586_CPU"
ident		BISDN
maxusers	64

options		INET			#InterNETworking
options		FFS			#Berkeley Fast Filesystem
options		PROCFS			#Process filesystem
options		"COMPAT_43"		#Compatible with BSD 4.3
options		"SCSI_DELAY=8"		#Be pessimistic about Joe SCSI device
options		UCONSOLE		#Allow users to grab the console

options         IPFIREWALL              #firewall
options         IPFIREWALL_VERBOSE      #print information about

options		TELES_HAS_MEMCPYB	# bisdn 0.97

options		SYSVSHM,SYSVSEM,SYSVMSG	# System V shared memory

options		"IBCS2"			# COFF binary compatibility
options		COMPAT_LINUX		# Linux Binary compatibolity

options		SHOW_BUSYBUFS		# busy buffers on shutdown ?

options		"I586_OPTIMIZED_BCOPY"
options		"I586_OPTIMIZED_BZERO"

#options	USERCONFIG		#boot -c editor
#options	USERCONFIG_BOOT		#imply -c and parse info area
#options	VISUAL_USERCONFIG	#visual boot -c editor

#options	AHC_SCBPAGING_ENABLE
#option		AHC_FORCE_PIO		# dumps core immediately
#options	AHC_SCBPAGING_ENABLE
options		AHC_TAGENABLE		# still makes problems with tapes
options		SCSI_REPORT_GEOMETRY

options		DDB
#options	KTRACE
#options	PERFMON

options		MFS			#Memory File System

config		kernel root on sd0 

controller	isa0
controller	pci0

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

# my hardwired scsi devices, they have always the same SCSI ID !
controller	ahc0
controller	scbus0 at ahc0
disk		sd0 at scbus0 target 0
disk		sd1 at scbus0 target 1
disk		sd2 at scbus0 target 2
tape		st0 at scbus0 target 4
device		cd0 at scbus0 target 6

# syscons is the default console driver, resembling an SCO console
options        "MAXCONS=4"
device		sc0	at isa? port "IO_KBD" tty irq 1 vector scintr

device		npx0	at isa? port "IO_NPX" irq 13 vector npxintr

device		sio0	at isa? port "IO_COM1" tty irq 4 vector siointr
device		sio1	at isa? port "IO_COM2" tty irq 3 vector siointr

device		lpt0	at isa? port? tty irq 7 vector lptintr

device		ed0 at isa? port 0x300 net irq 10 iomem 0xcc000 vector edintr

# Joystick
device		joy0	at isa? port "IO_GAME"

pseudo-device	loop
pseudo-device	ether
pseudo-device	log
pseudo-device	tun	1
pseudo-device	pty	16
pseudo-device	bpfilter 4	#Berkeley packet filter
pseudo-device	snp	3	#Snoop device - to look at pty/vty/etc..
pseudo-device	gzip

pseudo-device	vn		#Vnode driver (turns a file into a device)
#pseudo-device	speaker

# SB = SoundBlaster;  PAS = ProAudioSpectrum;  GUS = Gravis UltraSound
# Controls all sound devices
controller	snd0

# SoundBlaster DSP driver - for SB, SB Pro, SB16, PAS(emulating SB)
device sb0	at isa? port 0x220 irq 5 drq 1 vector sbintr

# SoundBlaster 16 DSP driver - for SB16 - requires sb0 device
device sbxvi0	at isa? drq 5

# SoundBlaster 16 MIDI - for SB16 - requires sb0 device
device sbmidi0  at isa? port 0x330

# Yamaha OPL-2/OPL-3 FM - for SB, SB Pro, SB16, PAS
device opl0     at isa? port 0x388

#---------------------------------------------------------------------------
#
#	ISDN - parts of an example config file for bisdn
#	------------------------------------------------
#
#	last edit-date: [Sun May 26 10:35:22 1996]
#
#---------------------------------------------------------------------------

options		IPI_VJ		# Van Jacobsen header compression support
#options	"IPI_DIPA=3"	# send ip accounting packets every 3 seconds

# Teles S0/16.3	###################################################### IRQ  9 ##
controller	tel0 at isa? port 0xd80 net irq 9 vector telintr
pseudo-device	disdn
pseudo-device	isdn
pseudo-device	ipi	4
pseudo-device	itel	2
pseudo-device	ispy	1

--==_Exmh_6422084240--





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