Re: bin/56728: iscsi redundancy doesn't work

[mlelstv%serpens.de@localhost (Michael van Elst)]

The following reply was made to PR bin/56728; it has been noted by GNATS.

From: mlelstv%serpens.de@localhost (Michael van Elst)
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: bin/56728: iscsi redundancy doesn't work
Date: Sun, 27 Feb 2022 15:09:02 -0000 (UTC)

 mlelstv%serpens.de@localhost (Michael van Elst) writes:
 
 > The command
 > iscsictl add_connection -I 3 -P 3
 > should add a connection for session 3 to the second portal number 3.
 > 
 > I'll try to set up something similar for testing...
 
 This part does work. I can create two redundant connections, cut network
 connectivity for one net (e.g. by dropping routes) and restore it and
 everything stays stable.
 
 Trying to logout from that session fails somewhat. Access to the
 devices fails immediately with I/O error and after some timeout
 the session is dropped and the devices detach.
 
 Removing each connection individually with 'remove_connection' looks
 more sane. When last connection is removed, the session is dropped
 and the devices detach.
 
 Simply stopping the target would also cause infinite retries.
 You can trace all this by increasing hw.iscsi.debug with sysctl.