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Re: OpenVMS cluster FREEZE during one node reboot

 
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Robert Gezelter
Honored Contributor

Re: OpenVMS cluster FREEZE during one node reboot

smsc,

A question on the wording of the original posting that started this thread.

When the post says "NODE2 goes DOWN.", what precisely happened? Was SHUTDOWN run or was the machine simply halted and rebooted?

- Bob Gezelter, http://www.rlgsc.com
smsc_1
Regular Advisor

Re: OpenVMS cluster FREEZE during one node reboot


"NODE2 GOES DOWN" means I use "REBOOT" command.
./ Lucas
Steve Reece_3
Trusted Contributor

Re: OpenVMS cluster FREEZE during one node reboot

As others have offered smsc, I'd reckon that the time that you're seeing is just about right. you can speed things up by reducing system parameters but that can then lead you into being susceptible to system crashes if the interconnect gets flooded or disconnected.

This all depends on what your application is too though - if you're running an ERP system then it's probably ok. If you're managing a satellite then it probably isn't. YMMV.
Robert Gezelter
Honored Contributor

Re: OpenVMS cluster FREEZE during one node reboot

smsc,

With all due repect, there is no REBOOT command on OpenVMS. One can define a symbol which forces a reboot (and indeed, there is just such a definition in the LOGIN.COM for SYSTEM; but it is not clear if that definition is the one in use).

If I understand correctly, that one types "REBOOT" at the "$" prompt, please do a SHOW SYMBOL REBOOT and post the result.

- Bob Gezelter, http://www.rlgsc.com

smsc_1
Regular Advisor

Re: OpenVMS cluster FREEZE during one node reboot


Goodmorning Robert and all,
this is the Reboot symbol:

SYSTEM> sho sym reboot
REBOOT == "@sys$system:shutdown 0 shutdown no yes later yes save"
./ Lucas
Joseph Huber_1
Honored Contributor

Re: OpenVMS cluster FREEZE during one node reboot

REBOOT == "@sys$system:shutdown 0 shutdown no yes later yes save"

I'm not really sure, but adding the option "REMOVE_NODE" (i.e. SAVE,REMOVE_NODE), could eventually reduce the cluster reconfiguration time, since the cluster does not have to wait for the reconnection interval.
http://www.mpp.mpg.de/~huber
smsc_1
Regular Advisor

Re: OpenVMS cluster FREEZE during one node reboot


REMOVE_NODE help me, but this is failover test, so software or hardare related, and I don't think hardware fault use REMOVE_NODE!!! ;)

By the way, thanks to all fo documentation, I read the cluster transiction state it's a normal behaviour!

Points assigned and thrad closed! ;)
./ Lucas
smsc_1
Regular Advisor

Re: OpenVMS cluster FREEZE during one node reboot

OPS! Forgot to close!
./ Lucas