[Info-vax] Ksplice equivalent for VMS ?

Arne Vajhøj arne at vajhoej.dk
Wed Feb 19 15:05:35 EST 2025


On 2/19/2025 2:50 PM, Robert A. Brooks wrote:
> On 2/19/2025 14:10, Arne Vajhøj wrote:
>> On 2/19/2025 10:05 AM, Robert A. Brooks wrote:
>>> On 2/19/2025 08:25, Simon Clubley wrote:
>>>> Oracle have a kernel patching tool called Ksplice that they acquired
>>>> back in 2011. It allows their support contract Linux users to apply
>>>> many Linux kernel patches without having to reboot the server:
>>>>
>>>> https://en.wikipedia.org/wiki/Ksplice
>>>>
>>>> Given the high-availability mindset for VMS users, I wonder if VSI ever
>>>> considered creating something similar for VMS ?
>>>
>>> No.
>>
>> What about process migration?
> 
> Like Galaxy on Alpha?

I thought Galaxy was multiple logical systems on one physical system.
DEC answer to IBM LPAR.

I am thinking about a scenario like:
* cluster with node A and B
* critical process P that for whatever reason does not work
   running concurrent on multiple nodes runs on A
* node A needs to be taken down for some reason
* so VMS on node A and B does some magic and migrate P from A to B
   transparent to users (obviously require a cluster IP address or
   load balancer)

> There is vMotion for virtual machines on ESXi, but that's not exactly 
> the same.

I know about that.

Not exactly the same but similar concept.

Arne




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