Date: Wed, 7 Jan 1998 23:15:19 -0800 (PST) From: greg@prismnet.com To: freebsd-gnats-submit@FreeBSD.ORG Subject: kern/5456: After writing more than 100MB to SCSI Exabyte tape drive system reboots Message-ID: <199801080715.XAA12859@hub.freebsd.org> Resent-Message-ID: <199801082233.OAA09979@hub.freebsd.org>
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>Number: 5456
>Category: kern
>Synopsis: After writing more than 100MB to SCSI Exabyte tape drive system reboots
>Confidential: no
>Severity: serious
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu Jan 8 14:33:10 PST 1998
>Last-Modified:
>Originator: Greg Stringfellow
>Organization:
PrismNet, Inc.
>Release: 2.2.5-RELEASE
>Environment:
FreeBSD smokey.prismnet.com 2.2.5-RELEASE FreeBSD 2.2.5-RELEASE #0: Sun Jan 4 1
4:39:39 CST 1998 root@smokey.prismnet.com:/usr/src/sys/compile/SMOKEY i386
>Description:
After writing more than 1GB (system backups)to a Exabyte 8505 SCSI tape drive, the system reboots without reporting any errors to the console or to syslog.
This problem has shown itself on two different machine, both running different motherboards and CPUs. Both machines work perfectly under 2.1.5-RELEASE. The only thing that was the same in either machine was that both are using NCR 53C810 controllers and Exabyte tape drives.
>From what I've been able to test (both are production machines unfortunately) this problem does not effect SCSI HDs or any other SCSI device. The code in st.c seems to either have a bug or a modification from 2.1.5 that is causing the problem.
-- Copy of current DMESG --
Copyright (c) 1992-1997 FreeBSD Inc.
Copyright (c) 1982, 1986, 1989, 1991, 1993
The Regents of the University of California. All rights reserved.
FreeBSD 2.2.5-RELEASE #0: Sun Jan 4 14:39:39 CST 1998
root@smokey.prismnet.com:/usr/src/sys/compile/SMOKEY
CPU: AMD K5 PR166 (116.34-MHz 586-class CPU)
Origin = "AuthenticAMD" Id = 0x524 Stepping=4
Features=0x21bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,PGE>
real memory = 67108864 (65536K bytes)
avail memory = 63778816 (62284K bytes)
Probing for devices on PCI bus 0:
chip0 <Intel 82439> rev 1 on pci0:0
chip1 <Intel 82371SB PCI-ISA bridge> rev 1 on pci0:7:0
chip2 <Intel 82371SB IDE interface> rev 0 on pci0:7:1
de0 <Digital 21040 Ethernet> rev 36 int a irq 9 on pci0:9
de0: DEC 21040 [10Mb/s] pass 2.4
de0: address 00:00:f8:21:4a:35
de1 <Digital 21140 Fast Ethernet> rev 18 int a irq 12 on pci0:10
de1: SMC 9332DST 21140 [10-100Mb/s] pass 1.2
de1: address 00:00:c0:84:c1:e4
de1: enabling 10baseT port
ncr0 <ncr 53c810a fast10 scsi> rev 18 int a irq 10 on pci0:11
ncr0 waiting for scsi devices to settle
(ncr0:0:0): "DEC DSP3107LS 441C" type 0 fixed SCSI 2
sd0(ncr0:0:0): Direct-Access
sd0(ncr0:0:0): 10.0 MB/s (100 ns, offset 8)
1021MB (2091144 512 byte sectors)
(ncr0:1:0): "QUANTUM FIREBALL_TM1280S 300N" type 0 fixed SCSI 2
sd1(ncr0:1:0): Direct-Access
sd1(ncr0:1:0): 10.0 MB/s (100 ns, offset 8)
1222MB (2503872 512 byte sectors)
(ncr0:2:0): 5.0 MB/s (200 ns, offset 8)
(ncr0:2:0): "HP 2.13 GB 2nd 0582" type 0 fixed SCSI 2
sd2(ncr0:2:0): Direct-Access
sd2(ncr0:2:0): 10.0 MB/s (100 ns, offset 8)
2033MB (4165272 512 byte sectors)
ncr1 <ncr 53c810a fast10 scsi> rev 18 int a irq 11 on pci0:12
ncr1 waiting for scsi devices to settle
(ncr1:4:0): "EXABYTE EXB-85058SQANXR1 07J0" type 1 removable SCSI 2
st0(ncr1:4:0): Sequential-Access
st0(ncr1:4:0): 5.0 MB/s (200 ns, offset 8)
density code 0x0, drive empty
(ncr1:5:0): "TOSHIBA CD-ROM XM-3401TA 3593" type 5 removable SCSI 2
cd0(ncr1:5:0): CD-ROM
cd0(ncr1:5:0): 4.0 MB/s (250 ns, offset 8)
can't get the size
Probing for devices on the ISA bus:
sc0 at 0x60-0x6f irq 1 on motherboard
sc0: VGA color <16 virtual consoles, flags=0x0>
sio0 at 0x3f8-0x3ff irq 4 on isa
sio0: type 16550A
sio1 at 0x2f8-0x2ff irq 3 on isa
sio1: type 16550A
lpt0 at 0x378-0x37f irq 7 on isa
lpt0: Interrupt-driven port
lp0: TCP/IP capable interface
fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa
fdc0: FIFO enabled, 8 bytes threshold
fd0: 1.44MB 3.5in
npx0 on motherboard
npx0: INT 16 interface
>How-To-Repeat:
Any large scale access to the SCSI tape described above will cause the reboot.
>Fix:
None.
>Audit-Trail:
>Unformatted:
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