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Conference kernel::ultrix_crashes

Title:Ultrix Crash Notesfile
Moderator:KERNEL::CARPENTERS
Created:Fri Nov 15 1991
Last Modified:Sat Apr 26 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:178
Total number of notes:507

178.0. "Ultrix hang and no crash dump possible" by NETRIX::"[email protected]" (Gernot Meyer) Mon Mar 24 1997 09:09

Hey

I have a customer with a 5000/240 that sometimes simply hangs 
(console clock stops). Also the network is unavailable.
The only possible thing is to press on the reset-button.

Sometimes there are some write-problems to a scsi-connected (WORM-drive) 
before the 'hang' occures but normally there are no errors in any logfile.

To get a crash-file I have to boot the system after that without initializing
the server and that's my problem.
A cnfg-command on the scsi-bus witch contains the disk drives doesn't respond
anything.
That causes the server to be unbootable anymore because no disk-drive is found
on scsi-bus.
An init will solve the problem, but I am unable to get a crashfile...

My question: What can I do to get a crashfile... Is there any possibility to
save the memory contents ??

btw: The worm-drive that uerf logs problems about is on a different scsi-bus 
which is still available after pressing the reset button.

Is there anybody who can give some helpful hints/tips ???

The customer is running Ultrix V4.4 and also patch Ultv44-011-4

Thanks in advance and regards

Gernot Meyer, BEO
([email protected])

[Posted by WWW Notes gateway]
T.RTitleUserPersonal
Name		DateLines
178.1more info neededRHETT::LACORTITue Mar 25 1997 17:177
    on the original bus, how long is the scsi cables? is everything
    terminated? what type of disks are out there... ?  It soulds like
    the hang is becuase of the scsi bus...  send the uerf -R -r 300
    output so that we can see what is out there..
    
    Thanks
    sandy
178.2more info - here they areNETRIX::"[email protected]"Gernot MeyerWed Mar 26 1997 10:3617
Hey

I checked all that. changing the SCSI-cable and terminators. I did not 
changed the server itself or the SCSI-adapters.
the machine is a DS5000/240 with Ult 4.4 on 3 rz29 disks in a pizzabox.
On SCSI-bus is  the box and a tlz06 drive. On the other SCSI-bus only
a terastore-jokebox with 2 scsi worm-drives.

In urf there is no information except the standard startup info 
after the system hang but info between these info.


regards

Gernot Meyer

[Posted by WWW Notes gateway]
178.3some thoughtsRHETT::LACORTIWed Mar 26 1997 20:3314
    Hmmm
    
    this gets tricky since rz29's came out after ultrix 4.4 and 4.5
    were qualified and are not in the spd. But ultrix does have the
    scsi cam built in at that rev. what revision is the tlz06 at?
    i.e the uerf out put from the last bootup?
    
    So if you hit the halt button and then type
    go 0x8003008, then try to boot, it cannot since the devices drop
    off the bus....I wonder if we can move the tape drive to the second
    scsi temporarily to see if that would help. Also what is the firmware
    on the rz29's (not knowing if that would matter)
    
    SAndy
178.4more infos - here we goNETRIX::"[email protected]"Gernot MeyerWed Apr 09 1997 13:4177
Hey

attached there is the uerf-info about the startup of the 'probleming' server


regards

Gernot

********************************* ENTRY     1.
*********************************
----- EVENT INFORMATION -----

EVENT CLASS                             OPERATIONAL EVENT 
OS EVENT TYPE                  300.     SYSTEM STARTUP 
SEQUENCE NUMBER                  0.
OPERATING SYSTEM                        ULTRIX 32 
OCCURRED/LOGGED ON                      Tue Mar  4 10:56:50 1997 MET
OCCURRED ON SYSTEM                      DOKU01 
SYSTEM ID                 x82040230     HW REV: x30
                                        FW REV: x2
                                        CPU TYPE: R2000A/R3000 
PROCESSOR TYPE                          KN03 
MESSAGE                                 ULTRIX V4.4 (Rev. 69) System #11: Thu 
                                         _Sep 19 13:07:48 MET DST 1996 
                                        real mem = 109051904 
                                        avail mem = 82747392 
                                        using 5324 buffers containing 21807104

                                         _bytes of memory 
                                        DECsystem 5900, 40MHz Processor 
                                        KN03 Processor - system rev 48 
                                        64Kb Primary Instruction Cache, 64Kb 
                                         _Primary Data Cache 
                                        cpu0 ( version 3.0, implementation 2 )

                                        fpu0 ( version 4.0, implementation 3 )

                                        HBA 'PMAZ-BA ' and DME 'PMAZ-BA ' 
                                         _attached on Controller 0. 
                                        asc0 at ibus3 
                                        rz0 at asc0 slave 0 (DEC     RZ28     
                                         _(C) DEC 442D) 
                                        rz1 at asc0 slave 1 (DEC     RZ28     
                                         _(C) DEC 442D) 
                                        rz2 at asc0 slave 2 (DEC     RZ28     
                                         _(C) DEC 442D) 
                                        tz5 at asc0 slave 5 (DEC     TLZ06    

                                         _(C)DEC 0389) 
                                        ln0 at ibus3 
                                        ln0: DEC LANCE Ethernet Interface, 
                                         _hardware address: 08:00:2b:2a:cf:52 

                                        scc0 at ibus3 
                                        fb0 at ibus0 
                                        fb: Module type PMAG-JA  1280X1024 
                                        HBA 'PMAZ-AA ' and DME 'PMAZ-AA ' 
                                         _attached on Controller 1. 
                                        asc1 at ibus2 
                                        cwd12 at asc1 slave 4 (MATSHITALF-7010

                                         _ (00:1A) cwd blocksize 1024) unit 
                                         _96, pu_config 0xa1 
                                         
                                        cwd13 at asc1 slave 5 (MATSHITALF-7010

                                         _ (00:1A) cwd blocksize 1024) unit 
                                         _104, pu_config 0xa1 
                                         
                                        presto: NVRAM tested read/write ok 
                                        presto: initializing 1047552 bytes of 
                                         _NVRAM at 0x9c000400 
                                        presto: primary battery ok 


[Posted by WWW Notes gateway]
178.5NABETH::alanDr. File System's Home for Wayward Inodes.Sat Apr 26 1997 08:506
	Your earlier note mentioned pizza box.  Since the term has been
	used for various boxes over the years, could you be more explicit?
	There is a BA35x desktop shelf that uses the name, but the
	RZ29B isn't supported in it.  They tend to over heat.  The
	description you gave of the system also doesn't match the
	configuration list posted in .4.  Those seem to be RZ28s.