A500 hang after reallocate PDC

[Adam Courtney]

Hi,

Am booting my A500, all HW checks go through fine, PDC can do an sea and see both drives and the dvd rom (attached via SESCSI).

If I boot form the internal disks it boots through ISL starts Hp-UX, reallocates PDC then just sits there, eventually rebooting.

If I boot from the DVD-ROM it does the same except it never reboots it just sits there, the DVD gets accessed and then spins down after timeout.

Any ideas please?

Adam

[Claudiu Schmidt]

Hi,

you should try booting in single user mode, or in maintanance mode to see if server comes up.
If not, disconnect all io connected to server, and try booting again. Do you have some error logs in the GSP?

Claudiu

[Sunil Sharma_1]

Hi,

There can be two problems .
1. Your Rood disk got corrupted.
2. at the same time your DVD drive is not working properly.

Did u check GSP for any Errors ?
You try to DVD drive and try to boot boot form CD it should work.
Sunil

[Adam Courtney]

Just to confirm, the system DOES NOT boot from CD, the same symptoms are exhibited as when I try to boot from internal disks.

Maintenance mode, single user etc seem to make no difference.

I`ll check GSP logs next

Adam

[Claudiu Schmidt]

Hi,

if single user mode or maintanance mode are not working, you should disconect all io devices and unplug all iocards from the server. at this level, the server is making some ioscans, and if you have some problems in the io, system will hang or panic at this level. try booting with only the internal disks attached.

Claudiu

[Jeff Schussele]

Hi Adam,

I agree with Claudiu.
You probably have a HW problem that's causing a panic when the system is walking the busses on it's normal boot-time device hunt.

At a minimum reseat all cards, RAM & cable connections.

Better yet, if you have a maint contract, call it in & let HP do the work you're paying for.

Rgds,
Jeff

[doug hosking]

Also check for missing SCSI terminators.
One of the A500s we have here was extremely
unhappy when booting until we added a missing SCSI terminator on an otherwise unused bus.
I'm not sure why, but this system seemed much more picky about that than other systems I've used. After adding the missing terminator it's been rock solid for several years.

[John Payne_2]

The origional batch of A500 machines had an issue with the SCSI cards where they were not self terminating and crashed the system. I think they have fixed it in the rp2470 era machines...

John

[Adam Courtney]

Checked termination, replaced the LVD terminator now it gets as far as booting and I get an HPMC



Console reset done.

Boot device reset done.


******* Unexpected HPMC/TOC. Processor HPA FFFFFFFF'FFFA0000 *******
GENERAL REGISTERS:
r00/03 00000000'00000000 FFFFFFFF'F877C000 00000000'0064652C 00000000'4059B800
r04/07 00000000'40441800 00000000'00FF0000 00000000'0000FF00 00000000'00000002
r08/11 00000000'00000001 00000000'000A0007 00000000'00000002 00000000'00000000
r12/15 00000000'000000F2 00000000'000000FA 00000000'000000F0 00000000'000000FF
r16/19 00000000'F00003DC 00000000'F000028C 00000000'F0002AF4 00000000'00000000
r20/23 0000001C'7EE75795 00000000'00000000 0000001C'7EE75795 00000000'007A4800
r24/27 0000001C'7EE75795 00000000'006E00B8 0000001C'7EE75BE5 00000000'00906000
r28/31 00000000'00000000 00000000'00000000 400003FF'FFFF0E50 0000001C'7EE75BE1
CONTROL REGISTERS:
sr0/3 00000000'00000000 00000000'00000000 00000000'00000000 00000000'00000000
sr4/7 00000000'00000000 00000000'01E4E800 00000000'03BB3000 00000000'00000000
pcq = 00000000'00000000.00000000'00646530 00000000'00000000.00000000'00646534
isr = 00000000'A627FFE1 ior = C0000000'DF34D028 iir = 48350050 rctr = 7FFFF8D9

pid reg cr8/cr9 00000000'00000000 00000000'00000000
pid reg cr12/cr13 00000000'00000000 00000000'00000000
ipsw = 00000000'0804000F iva = 00000000'0002C000 sar = 25 ccr = C0
tr0/3 00000000'0083E840 00000000'00903800 00000000'00000001 00000000'F00003DC
tr4/7 0000001C'7EC3AC23 0000001C'7EC3B2FF 00000000'00175118 400003FF'FFFF0D60
eiem = C6000000'00000000 eirr = 80000008'00000000 itmr = 0000001C'84887481
cr1/4 00000000'00000000 00000000'00000000 00000000'00000000 00000000'00000000
cr5/7 00000000'00000000 00000000'00000000 00000000'00000000
MACHINE CHECK PARAMETERS:
Check Type = 20000000 CPU STATE = 9E000004 Cache Check = 00000000
TLB Check = 00000000 Bus Check = 0030103B PIM State = ? SIU Status = ????????
Assists = 00000000 Processor = 00000000
Slave Addr = 000000FF'F877C028 Master Addr = FFFFFFFF'FFFA0000


HPMC, pcsq.pcoq = 0'0.0'646530 , isr.ior = 0'a627ffe1.c0000000'df34d028
@(#)B2352B/9245XB HP-UX (B.11.00) #1: Wed Nov 5 22:38:19 PST 1997
High-priority machine check: (display==0xd910, flags==0x0)
* CPU State 0x9e000004
* Bus Check 0x30103b
* Slave Address 0xff'0xf877c028
* Master Address 0xffffffff'0xfffa0000

Is that the CPU?

This machine has no support contract anymore

Adam

[Eugeny Brychkov]

Adam,
CPU 0 requested something at address 0xFF'F877C028 and there was a problem communicating with this device/address.
Please go to PDC (stopping booting machine when it says 'press any key within 10 seconds...'), go to service menu, and capture 'pim' and 'pdt' commands output. Attach them to your next reply
Eugeny