Currently Running Processes with Mirroring

Question

Question

Gordon Sjostrom · Jul 14, 2022

This might be a dumb question but I didn't see anything about it in the Mirroring documentation. Are processes that are currently running when the primary fails over to the secondary automatically switched over and continue processing? Or are they terminated and would need to be restarted on the secondary?

Discussion (4)1

Log in or sign up to continue

Vic Sun · Jul 14, 2022

What kind of processes? Most user processes will need to be restarted on the other member. The mirror has some mechanisms to allow for, for example, productions to start automatically on failover, but for any given random process you probably need to handle that manually. You can use ZMIRROR.

https://docs.intersystems.com/iris20221/csp/docbook/DocBook.UI.Page.cls?KEY=GHA_mirror_set_config#GHA_mirror_set_tunable_params_zmirror_routine

0 0

score 0 · Answer 1 · 2022-07-14T11:36:25-04:00

Yes these would be random user process. So in ^ZMIRROR we would need to add code in $$CheckBecomePrimaryOK to restart these processes?

score 0 · Answer 2 · 2022-07-14T11:47:09-04:00

Vic Sun · Jul 14, 2022

Seems about right.

0 0

score 0 · Answer 3 · 2022-07-15T11:17:24-04:00

I recommend that "batch processes" would be run from the Task manager, then if you manage an exact copy of the task definitions (in tasks manager) in your failover, then you do not have to worry (it can be automated with export/import as well)

Make sure you have "auto start" enable for your interoperability in case of a mirror failover