In the bank I worked in from 87 to 90, Peter Gram and the other
super-nerds would take in the Olivetti M24 PC's where the hard drive
would constantly freeze and caaaaarefully lift up the right hand side of
the unit about 10 cm's off the table, then let it drop. That would
always free the drive.
What was funny was when end users called in with the problem. The guys -
the Peter Grams of the world - would then instruct them over the phone:
PGs: "Please lift - VERY CAREFULLY - the unit in the right hand side
about 10 cm's up in the air. Careful!"
User (excited, scared): "OK, I'm HOLDING it now..."
PG's: "Now release it - drop it!"
User: "What?!?!?"
PG's: "Drop it. Let it go. Suddenly!"
<WHUMP>
User: "It's done. What now?"
PG's: "Try to start up the PC again..."
User: "It works!"
Peter Gram knows many such stories.
I bought an M24 SP (Special Performance - 10 MHz instead of 8, 20 MB
harddisk, 640 MB RAM, monochrome) in 1986 just before joining the bank.
It cost me - believe it or not - 42K Danish Kroner. Of course. I think I
finished paying for it a couple of years ago.
Mogens
Paul Drake wrote:
--- Mladen Gogala <mladen@xxxxxxxxxxxxxxx> wrote:
Ask them to perform the "drop test". Here's the URL describing the test:
http://www.computerworld.com/departments/opinions/sharktank/0,4885,91405,00.html
Hey - when I worked at a ComputerLand store in the early 80s, the recommended height to "fix" an Atari via a gravity check was 36 inches, none of this one foot stuff.
Of course, you had to take the unit back into the repair room and close the door, lest the customer hear the sound of the impact ;)
Boom. That will be $30 please.
Pd
On 03/19/2004 09:48:30 AM, laura pena wrote:----------------------------------------------------------------
Thanks Lee,
So frustrating. Veritas has been working on this for the past 3 to
4
months now. They currently say the VxConfig Daemon
is
crashing and have escalated the bug.
But before they said gabconfig was issue.
Thanks for the information.
--- Lee Jenkins <lee.jenkins_at_remotedba.co.za@xxxxxxxxxxxxxxx> wrote:
Hi Laura,
I think the set-nofastpath in my ltttab is
specifically for a bug in HP-UX.
You should probably pass it by Veritas support,
but
I would set the network cards to auto-negiotiate off, and set to both
100Mhz. (2G is overkill)
Do both node have the same 100 MHz/1G setup and
are
plumbed together?i.e. 100->100MHz and 2G->2G?
Our client setup is 2 private heartbeats
(100Mhz)
and 2 public LANs (1G). This way either network card can fail, and
everything still runs.
So if I understand we should try setting
set-nofastpath 1 in our /etc/llttab so it will
use
the slower connection to perform a heartbeat
check?
Yes.
Regards,
Lee
laura pena writes:
Wow someone who has heard of this.
Yes, we have our interconnects set to etherfp.
LLT link information:
Link Tag State Type Pri SAP
MTU Addrlen
Xmit Recv Err
LateHB
Broadcast
0 eri0 on etherfp hipri
0xCAFE 1500 6
261840450 240300348 0
89
FF:FF:FF:FF:FF:FF
1 ce1 on etherfp hipri
0xCAFE 1500 6
261914713 240332338 0
91
FF:FF:FF:FF:FF:FF
we have 2 interconnects but they are of
differnts
speeds:
set-node VLDBN1 set-cluster 10 link eri0 /dev/eri:0 - ether - - link ce1 /dev/ce:1 - ether - -
I believe ce1 is the 2 gigabit and eri0 is the 100M
This setting was done by our SA. We do have a
ce0
which is another 2 gigabit, but our SA wants to leave this for public connection. Do have a
similar
setup?
So if I understand we should try setting
set-nofastpath 1 in our /etc/llttab so it will
use
the slower connection to perform a heartbeat
check?
Thanks so much for responding.
-Lizz
Lee Jenkins <lee.jenkins@xxxxxxxxxxxxxxx>
wrote:
Hi Lizz,
I posted this response on oracle-l, but it
doesn't
seem to have appeared.
On a customer of ours 3 node cluster VCS v3.5
(HP-UX), we had to set "set-nofastpath 1" in /etc/llttab so as to force the heartbeat to
operate
at 100Mhz. Have you got 2 heart beat
interconnects?
i.e. redundancy?
You can get stats by running lltstat, which
shows
data volumes and errors.
You can run lltstat -l to check the setting of
fastpath. "ether" means fastpath is disabled,
"etherfp" means enabled.
Regards, Lee
Lee Jenkins
RemoteDBA
www.remotedba.co.za
Tel: 011 447 0533
Fax: 011 447 0533
Cell: 083 408 0857
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