On Thursday, 05/20/2021 at 07:37 GMT, Dave Jones <djo...@itconline.com>
wrote:
> How can I get automatically notified in a z/Linux guest (in this case
> Ubuntu 20.04) when a rdr file arrives for it?

(Didn't we have a conversation about this here a few weeks/months ago?)

Aside from an IMSG, the reader will get an unsolicited DEVICE-END
interrupt indicating a transition from NOT READY to READY.  This is the
same kind of interrupt that indicates
- a tape has been loaded in a drive and has reached load point,
- a disk pack has spun up to speed after being mounted (think 2314)
- you have powered on your 3270.

Bottom line, the device is ready to send or receive data.

But I don't know if the Linux device drivers will generate UDEV events
based on it.  It would be nice if they did.

Alan Altmark

Senior Managing z/VM and Linux Consultant
IBM Systems Lab Services
IBM Z Delivery Practice
ibm.com/systems/services/labservices
office: 607.429.3323
mobile; 607.321.7556
alan_altm...@us.ibm.com
IBM Endicott

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