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Message-Id: <199809241347.PAA00484@yorikke.arb-phys.uni-dortmund.de>
Date: Thu, 24 Sep 1998 15:47:21 +0200 (MET DST)
From: "Wilhelm B. Kloke" <wb@yorikke.arb-phys.uni-dortmund.de>
Reply-To: wb@yorikke.arb-phys.uni-dortmund.de
To: FreeBSD-gnats-submit@FreeBSD.ORG
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Subject: kern/8074: CAM rescan operation fatal
Sender: owner-freebsd-bugs@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.org


>Number:         8074
>Category:       kern
>Synopsis:       CAM rescan operation fatal
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:
>Keywords:
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Sep 28 06:50:01 PDT 1998
>Last-Modified:
>Originator:     Wilhelm B. Kloke
>Organization:
IfADo
>Release:        FreeBSD 3.0-CURRENT i386
>Environment:

	from dmesg:
	ncr0: <ncr 53c815 fast10 scsi> rev 0x04 int a irq 9 on pci0.9.0
	da0 at ncr0 bus 0 target 6 lun 0
	da0: <IBM DDRS-34560 S92A> Fixed Direct Access SCSI2 device 
	da0: 4357MB (8925000 512 byte sectors: 255H 63S/T 555C)

	also Philips CD2600

>Description:

	I tried to rescan the SCSI bus camcontrol rescan 0.
	Or camcontrol rescan 0:5:0.
	I am getting now:
> ncr0: SCSI phase error fixup: CCB already dequeued (0xf0778000)
> ncr0: timeout nccb=f0778000 (skip)
> ncr0: timeout nccb=f0778000 (skip)
> ncr0: timeout nccb=f0778000 (skip)
> ncr0: timeout nccb=f0778000 (skip)
> ncr0: timeout nccb=f0778000 (skip)
> ncr0: timeout nccb=f0778000 (skip)
> ncr0: timeout nccb=f0778000 (skip)
> cd0: fatal error, failed to attach to device
> (cd0:ncr0:0:5:0): READ CD RECORDED CAPACITY. CDB: 25 0 0 0 0 0 0 0 0 0 
> (cd0:ncr0:0:5:0): error code 67
> ncr0: timeout nccb=f0779e00 (skip)
> ncr0: timeout nccb=f0779e00 (skip)
> ncr0: timeout nccb=f0779e00 (skip)
> ncr0: timeout nccb=f0779e00 (skip)
> ncr0: timeout nccb=f0779e00 (skip)
> ncr0: timeout nccb=f0779e00 (skip)
> ncr0: timeout nccb=f0779e00 (skip)
> ncr0: timeout nccb=f0779e00 (skip)
> ncr0: timeout nccb=f0779e00 (skip)
> ncr0: timeout nccb=f0779e00 (skip)
> (da0:ncr0:0:6:0): lost device
> (da0:ncr0:0:6:0): removing device entry

After that there is way to get da0 back other than reboot.
Rebooting with CD writer on is fatal also with similar messages.
On scanbus the list was much longer, of course. And it took some
time. And froze all disk operation until crash.

>How-To-Repeat:

>Fix:
	
	

>Audit-Trail:
>Unformatted:

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