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Date:      Tue, 12 May 1998 03:12:12 -0400
From:      tcobb <tcobb@staff.circle.net>
To:        "'freebsd-hackers@freebsd.org'" <freebsd-hackers@FreeBSD.ORG>
Subject:   panic: biodone buffer not busy (2.2.6 with DPT) 
Message-ID:  <509A2986E5C5D111B7DD0060082F32A402F99D@freya.circle.net>

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I am now getting regular (approx. every 3 days) panics on my busy NFS
server with the above error.  According to what I can piece together,
there is no 2.2.6 patch which will fix this problem?

As to details, this occurs on a SCSI-only machine with a DPT RAID
controller.  It doesn't require particularly busy SCSI access to trigger
it, though I cannot do so at will.  Unfortunately, because this is a
production server I cannot wait for a crashdump before rebooting.

I upgraded from 2.2.2 to get better integrated DPT support, and to avoid
an mbuf leak that appeared in my hacked 2.2.2 version which killed me
with a panic about once every 2 weeks.

Any idea if I should expect this panic to appear in -current?  I don't
much like the idea of running -current on this machine b/c this NFS
server is absolutely critical to operations.  I *will* run -current if
it looks like that will fix my problem (and that there is a relatively
stable snapshot available).

Any suggestions are much appreciated!  Thanks in advance.

- Troy Cobb

Here's the relevant boot details:

May 12 00:45:54 benzaiten /kernel: Copyright (c) 1992-1998 FreeBSD Inc.
May 12 00:45:54 benzaiten /kernel: Copyright (c) 1982, 1986, 1989, 1991,
1993
May 12 00:45:54 benzaiten /kernel: 	The Regents of the University of
California.  All rights reserved.
May 12 00:45:54 benzaiten /kernel: 
May 12 00:45:54 benzaiten /kernel: FreeBSD 2.2.6-RELEASE #0: Sun Apr  5
05:23:44 EDT 1998
May 12 00:45:54 benzaiten /kernel:
root@phoenix.circle.net:/usr/src/sys/compile/BENZAITEN-2
May 12 00:45:54 benzaiten /kernel: CPU: Pentium (232.67-MHz 586-class
CPU)
May 12 00:45:54 benzaiten /kernel:   Origin = "GenuineIntel"  Id = 0x543
Stepping=3
May 12 00:45:54 benzaiten /kernel:
Features=0x8001bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,MMX>
May 12 00:45:54 benzaiten /kernel: real memory  = 134217728 (131072K
bytes)
May 12 00:45:54 benzaiten /kernel: avail memory = 129118208 (126092K
bytes)
May 12 00:45:54 benzaiten /kernel: DPT:  RAID Manager driver, Version
1.0.1
May 12 00:45:54 benzaiten /kernel: Probing for devices on PCI bus 0:
May 12 00:45:54 benzaiten /kernel: chip0 <Intel 82437VX PCI cache memory
controller> rev 2 on pci0:0:0
May 12 00:45:54 benzaiten /kernel: chip1 <Intel 82371SB PCI-ISA bridge>
rev 1 on pci0:7:0
May 12 00:45:54 benzaiten /kernel: chip2 <Intel 82371SB IDE interface>
rev 0 on pci0:7:1
May 12 00:45:54 benzaiten /kernel: vx0 <3COM 3C905 Fast Etherlink XL
PCI> rev 0 int a irq 11 on pci0:17:0
May 12 00:45:54 benzaiten /kernel: mii[*mii*] address 00:60:08:15:a9:f4
May 12 00:45:54 benzaiten /kernel: vga0 <VGA-compatible display device>
rev 211 int a irq 15 on pci0:18:0
May 12 00:45:54 benzaiten /kernel: fxp0 <Intel EtherExpress Pro 10/100B
Ethernet> rev 2 int a irq 10 on pci0:19:0
May 12 00:45:54 benzaiten /kernel: fxp0: Ethernet address
00:a0:c9:9b:23:98
May 12 00:45:54 benzaiten /kernel: DPT:  PCI SCSI HBA Driver, version
1.2.4
May 12 00:45:54 benzaiten /kernel: dpt0 <DPT Caching SCSI RAID
Controller> rev 2 int a irq 9 on pci0:20:0
May 12 00:45:54 benzaiten /kernel: dpt0: DPT type 3, model PM3334UW
firmware 07L0, Protocol 0 
May 12 00:45:54 benzaiten /kernel:       on port 6310 with 458753MB
Write-Back cache.  LED = 0000 0000 
May 12 00:45:54 benzaiten /kernel: dpt0: Enabled Options:
May 12 00:45:54 benzaiten /kernel:       Collect Metrics
May 12 00:45:54 benzaiten /kernel:       Optimize CPU Cache
May 12 00:45:54 benzaiten /kernel: dpt0 waiting for scsi devices to
settle
May 12 00:45:54 benzaiten /kernel: (dpt0:0:0): "DPT RAID-1 07L0" type 0
fixed SCSI 2
May 12 00:45:54 benzaiten /kernel: sd0(dpt0:0:0): Direct-Access 1029MB
(2109328 512 byte sectors)
May 12 00:45:54 benzaiten /kernel: dpt0 waiting for scsi devices to
settle
May 12 00:45:54 benzaiten /kernel: (dpt0:2:0): "DPT RAID-5 07L0" type 0
fixed SCSI 2
May 12 00:45:54 benzaiten /kernel: sd1(dpt0:2:0): Direct-Access 20503MB
(41990720 512 byte sectors)
May 12 00:45:54 benzaiten /kernel: Probing for devices on the ISA bus:
May 12 00:45:54 benzaiten /kernel: sc0 at 0x60-0x6f irq 1 on motherboard
May 12 00:45:54 benzaiten /kernel: sc0: VGA color <16 virtual consoles,
flags=0x0>
May 12 00:45:54 benzaiten /kernel: fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on
isa
May 12 00:45:54 benzaiten /kernel: fdc0: FIFO enabled, 8 bytes threshold
May 12 00:45:54 benzaiten /kernel: fd0: 1.44MB 3.5in
May 12 00:45:54 benzaiten /kernel: npx0 flags 0x1 on motherboard
May 12 00:45:54 benzaiten /kernel: npx0: INT 16 interface
May 12 00:45:54 benzaiten /kernel: Intel Pentium F00F detected,
installing workaround
May 12 00:45:54 benzaiten /kernel: WARNING: / was not properly
dismounted.

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