Just to give an update,
iSCSI has been running stably for the past 1+ months. I could only get a stable multipath
when I create two multipaths, one for network 172.27.0.x and one for 172.27.1.x, with
their respective targets (2 per network).
The previous approach of a single multipath with all the networks and all targets was not
working, and I could understand why from the logs. or even from the command line of a
host.
Not sure what the recommended approach really is, and could not find much in the internet
about it. If someone has any information or guide to enlighten us as to how multipath
should be configured and what are the different options I would appreciate it.