Dear Port Alpha:

I have NetBSD/1.4.1 running on an Alpha 3000/400.  This morning when I
arrived at work I found it had developed a serious problem.  There were a
lot of messages on the telnet window I'd left open and many more on the
console, some of which I've appended to this message.  It kept responding
with "i/o error" when I tried to investigate from the tty window, so I
pushed the halt button and turned it off and on.  Fortunately it came back
up normally (after cleaning the file system).

Would anyone care to speculate on the cause and if it's likely to happen again?

The machine has one hard disk (a DEC RZ1CF) which has an SCA connector, so
I've used an adapter to plug it into my Alpha's internal SCSI bus's 50-pin
Berg connector.  Maybe that arrangement is causing me trouble, although
I've had another 3000/400 running with the same setup for the past three or
four months without any problems.


Ray Phillips



tty output:
--------------
Message from syslogd@jkalpha2 at Fri Feb 11 01:02:43 2000 ...
jkalpha2 /netbsd: dropping msg byte 2><dropping msg byte 4>asc0: unexpected
disc
onnect; sending REQUEST SENSE

Message from syslogd@jkalpha2 at Fri Feb 11 01:02:43 2000 ...
jkalpha2 /netbsd: dropping msg byte 4>sd0(asc0:3:0): sync nego not completed!

Message from syslogd@jkalpha2 at Fri Feb 11 01:03:14 2000 ...
jkalpha2 last message repeated 18 times


Console output:
--------------
asc0: unexpected disconnect; sending REQUEST SENSE
asc0: identify failedentify failed
asc0: SCSI bus reset
<dropping msg byte 4>sd0(asc0:3:0): sync nego not completed!
asc0: unexpected disconnect; seneset
<dropping msg byte 4>sd0(asc0:3:0): sync nego not completed!
asc0: unexpected disconnect; sending REQUEST SENSE
asc0: identiSI bus reset
<dropping msg byte 4>sd0(asc0:3:0): sync nego not completed!
asc0: unexpected disconnect; sending REQUEST SENSE
asc0ify failed
asc0: SCSI bus reset
?01 EXT HLT
  PC= FFFFFC00.0051ED00 PSL= 00000000.00000006

>>>

Part of reboot output:
---------------------
root on sd0a dumps on sd0b
root file system type: ffs
swapctl: adding /dev/sd0b as swap device at priority 0
Automatic boot in progress: starting file system checks.
/dev/rsd0a: UNREF FILE  I=16156  OWNER=root MODE=100644
/dev/rsd0a: SIZE=30554 MTIME=Feb 10 15:00 2000  (RECONNECTED)
/dev/rsd0a: NO lost+found DIRECTORY (CREATED)
/dev/rsd0a: FREE BLK COUNT(S) WRONG IN SUPERBLK (SALVAGED)
/dev/rsd0a: BLK(S) MISSING IN BIT MAPS (SALVAGED)
/dev/rsd0a: SUMMARY INFORMATION BAD (SALVAGED)
/dev/rsd0a: 1031 files, 20484 used, 106419 free (75 frags, 13293 blocks,
0.1% f)
/dev/rsd0a: MARKING FILE SYSTEM CLEAN
/dev/rsd0d: 53519 files, 2146800 used, 1409808 free (33720 frags, 172011
blocks)
/dev/rsd0d: MARKING FILE SYSTEM CLEAN
setting tty flags
starting network