On Wed, 2021-03-31 at 17:27 +0530, Muneendra Kumar M wrote: > Hi Martin, > > > > > > > I'm aware of Ben's work, but I hadn't realized it had anything to > > > do > > > with FPIN. As of today, multipathd doesn't listen on the > > > NETLINK_SCSITRANSPORT socket. Does any user space tool do this? > > > Google didn't show me anything. > > > > > I did, once, but that was years ago. > > We have user space daemon(Broadcom'sFiber Channel Transport Daemon) > called > fctxpd (Benjamin was talking in his patch) which acts on fpin-li events > by listening on NETLINK_SCSITRANSPORT socket > And it sets the path to marginal path group on receiving FPIN events. > This daemon is part of epel8. > Below is the path for the same where we have changes > https://github.com/brocade/bsn-fc-txptd > > Regards, > Muneendra. I see, and this daemon uses multipathd's "set marginal" command to make multipathd act on it. I can see now that Ben talked about "Broadcom's Fiber Channel Transport Daemon" back then, but he didn't go into details, and I either overlooked it entirely, or forgot about it. I recall that I was wondering by myself whether the "set marginal" command had any use other than manual testing. I wonder if we could / should incorporate this functionality into multipathd itself. But anyway, it seems that this part of the FPIN mechanism works already. Thanks Martin -- Dr. Martin Wilck <mwilck@xxxxxxxx>, Tel. +49 (0)911 74053 2107 SUSE Software Solutions Germany GmbH HRB 36809, AG Nürnberg GF: Felix Imendörffer -- dm-devel mailing list dm-devel@xxxxxxxxxx https://listman.redhat.com/mailman/listinfo/dm-devel
