Date: Sun, 5 Feb 1995 14:45:29 -0600 (CST) From: obiwan!bob@uudell.us.dell.com (Bob Willcox) To: freebsd-hackers@freefall.cdrom.com (freebsd-hackers) Cc: freebsd-scsi@freefall.cdrom.com Subject: Panics w/multi-file SCSI tape on 950202-SNAP Message-ID: <m0rbDpp-00030WC@obiwan.uucp>
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I am having problems with multi-file tapes on the 2.0-950202-SNAP
system. I have Wangek 5525ES and Exabyte 8200 tape drives on the
system and neither of them seem to be working with other than the
first file of a tape.
Note: both multi-file tapes were created on same system with dump
just minutes before w/o incident.
When attempting to run the command:
restore tfs /dev/rst0 2
targetting the Wangtek tape drive the process will hang for about
10 minutes (well, that's how long it was the one time I mesaured
it) and then fail with (in a kernel w/o debugger):
bt0: Try to abort
ioctl MTFSF: Input/output error
st0(bt0:5:0): error code 127
tape read error: Input/output error
The same command on a kernel with the debugger I get:
Fatal trap 3: breakpoint instruction fault wihile in kernel mode
instruction pointer = 0x8:0xf0189406
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = Idle
interrupt mask = bio
panic: breakpoint instruction fault
syncing disks...
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x10
fault code = supervisor read, page not present
instruction pointer = 0x8:0xf012a777
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = Idle
interrupt mask = bio
panic: page fault
Same command, but targetting the Exabyte, I see no 10 minute delay
and get (kernel debugger or not):
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0xc00
fault code = supervisor read, page not present
instruction pointer = 0x8:0xf0116dbf
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = Idle
interrupt mask = bio
panic: page fault
syncing disks...
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x10
fault code = supervisor read, page not present
instruction pointer = 0x8:0xf012a777
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = Idle
interrupt mask = bio
panic: page fault
Relavent (I believe) system configuration:
486DX2/66, Tyan EISA/VL MB, 256k cache, 16m RAM
Buslogic BT-747S EISA SCSI Adapter with:
bt0 targ 0 lun 0: type 0(direct) fixed SCSI2
bt0 targ 0 lun 0: <FUJITSU M2263S-512 0194>
sd0: 640MB (1312344 total sec), 1658 cyl, 15 head, 52 sec, bytes/sec 512
bt0 targ 1 lun 0: type 0(direct) fixed SCSI1
bt0 targ 1 lun 0: <IBM 8760S 0???>
sd1: 639MB (1308930 total sec), 1632 cyl, 15 head, 53 sec, bytes/sec 512
bt0 targ 5 lun 0: type 1(sequential) removable SCSI1
bt0 targ 5 lun 0: <WANGTEK 5525ES SCSI REV73J >
st0: Wangtek 5525ES is a known rogue
st0: density code 0x0, drive empty
bt0 targ 6 lun 0: type 1(sequential) removable SCSI1
bt0 targ 6 lun 0: <EXABYTE EXB-8200 425A>
st1: density code 0x0, 1024-byte blocks, write-enabled
Relavent (I hope) kernel symbols:
f0116a58 T _printf
f0116aac T _kprintf
f0116f1c t _putchar
f012a624 T _dounmount
f012a73c T _sync
f012a7a8 T _quotactl
f0189308 T _db_write_bytes
f01893e4 T _Debugger
f0189410 F db_trace.o
Note that I am not getting any system dumps.
--
Bob Willcox ...!{rutgers|ames}!cs.utexas.edu!uudell!obiwan!bob
Austin, TX or try: @uudell.us.dell.com:obiwan!bob
512-258-4224 (home), 512-838-3914 (work)
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