Ok, I can now configure ttyS1 with faxaddmodem, which I could not do before these changes, so that is progress. However, faxaddmodem reports that it cannot detect a modem on ttyS0. Since the modem and cable are the same for both, I am simply physically switching the port that the cable connects to in order to carry out the configuration, obviously something else is wrong.
Does anyone have any pointers on how to get the primary serial port back from xen so that it can be of some use? can I configure the irq for com1 to use ttyS2? Will that work?
Seizing one of just two available serial devices for a console port strikes me as a dubious design choice. I venture that the vast majority of ES5/CentOS5 installations do not even configure xen doms other than 0 and of those that do, only a vanishingly small percentage actually employ a serial console interface.
Regards,