| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 2194.1 | This info might help | WAYLAY::GORDON | Resident Lightning Designer | Wed Feb 12 1997 09:19 | 17 |
| Well, let's start from the beginning...
What device type is failing?
Is it always the same CD failing?
Is this device the last one on the bus? How long are the cables?
Who made the cabinet?
What does the undocumented SHOW POOL command have to offer in
terms of resource exhaustion.
(unlikely to help but) can you get them to upgrade to V3.4
--Doug
|
| 2194.2 | more details | CSC32::S_WAHL | | Wed Feb 12 1997 12:03 | 35 |
| >>> What device type is failing?
RRD42, replaced w/another RRD42
>>> Is it always the same CD failing?
Yes.
>>> Is this device the last one on the bus? How long are the cables?
Who made the cabinet?
Chasis has six devices that are daisyed. It is the third device.
I think I understand - there is a Hard Drive, then two addl readers,
then this chasis.
>>> What does the undocumented SHOW POOL command have to offer in
>>> terms of resource exhaustion.
$ sh mem/pool
System Memory Resources on 12-FEB-1997 09:57:26.60
Dynamic Memory Usage (bytes): Total Free In Use Largest
Nonpaged Dynamic Memory 10735616 7892096 2843520 6898240
Paged Dynamic Memory 6376448 4268864 2107584 4241392
Does this help?
Thanks,
Susan
>>> (unlikely to help but) can you get them to upgrade to V3.4
Customer is willing to update.
|
| 2194.3 | | WAYLAY::GORDON | Resident Lightning Designer | Wed Feb 12 1997 13:19 | 43 |
| >>> Is it always the same CD failing?
> Yes.
If they move the CD to another drive, does the failure follow the CD?
> Chasis has six devices that are daisyed. It is the third device.
> I think I understand - there is a Hard Drive, then two addl readers,
> then this chasis.
Eh? It's a 150, so it's either on the A or B bus. I'm guessing
that it's the A bus from what you said, so the hard drive and one CD drive
are in the InfoServer cab. What's the external cab and who made it? Is
it a bunch of tabletop RRD42s stacked up? How long are all the cables
between items?
I meant SHOW POOL on the InfoServer. Should produce a display like:
Gumby> sh pool
Digital Equipment Corporation
InfoServer 1000 V3.3 (BL26) System Image: Jun 26 1995 17:50:05
Server Name: GUMBY Uptime: 060 23:11:53
Pool Size: 424152 Cache Size: 3164456
Pool Available: 294688 Pool poisoning is enabled.
% of Pool Free: 69%
Element Total Allocated Allocated Free Free Allocation
Size Elements Elements Bytes Elements Bytes Failures
0-104 20 17 1008 3 192 0
105-288 40 38 8168 2 400 0
289-1016 37 36 16960 1 520 0
1017+ 56 54 102104 2 293576 0
Totals: 153 145 128240 8 294688 0
Smallest free element size in bytes: 48
Largest free element size in bytes: 289480
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| 2194.4 | Further details | CSC32::S_WAHL | | Thu Feb 13 1997 17:45 | 38 |
| Doug,
The problem does not seem to follow the cd. The CD will work in any
other RRD42. The chasis is made by Line America model - #541. Cable
length is 1-2 feet. Customer repeated not very long at all.
The SHO POOL command from the Infoserver says:
Infoserver 150 V3.2(BL22C) SYSTEM IMAGE: 30-SEP-1994
Server Name= ATHENA Uptime = 0 14 7:25:42
Poolsize: 439512 Cachhe Size: 3164456
Pool Avail: 302232 Pool Poisoning: Disabled
% of Pool Free - 68%
Element Total Allocated Allocated Free Free Alloc
Size Element Elements Bytes Elem Bytes Fail
0-104 28 23 1208 5 248 0
105-288 75 75 17584 0 0 0
289-1016 68 30872 1 680 0
1017+ 52 48 85840 4 301288 0
Totals
224 214 135504 10 302212 0
Smallest Free Elements Size in Bytes = 24
Largest Free Elements Size in Bytes = 286656
I typed the above information as read by the customer. The value that
is missing under the Total Element column was deleted by me - it was
not origianlly blank. The customer was not available when I called her
back for the data.
Hope this helps.
Thanks,
Susan
|
| 2194.5 | I'm down to some pretty far out speculations in cases... | WAYLAY::GORDON | Resident Lightning Designer | Fri Feb 14 1997 09:20 | 35 |
| OK - it doesn't look like resource problems on the InfoServer. (The
missing value is of no importance, the last column is what's really
significant in this case.)
I'd suspect one of the following things:
a) SCSI Termination in the external box.
b) bus length. Remember the bus is a total of all the internal cable
in the InfoServer, plus the connecting cable, plus the cabling
in the external cab.
c) flakey cable. Unlikely, but possible.
d) Termpower problems. This one is tough and based on what I just
looked up, probably not likely.
When this happens, what does SHOW DEVICE say about the drive in
question. Most obvious thing to look for is if it has "dismounted" the
CD (no volume label visible.) If so, the InfoServer automount poll is getting
an error and thinks the CD has been ejected. Of course in that case it should
run down the aautomounted service too.
One other possibility. Is there any other InfoServer offering the
same service name, especially if the service name is created and not
automounted? If so the client could be failing over to a service name that
isn't really what it expects. Again, unlikely but I wracking my brain for
scenarios that could fit.
There's not much more help I can offer. I'm no longer even with
InfoServer Engineering.
--Doug
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