Re: [dm-devel] dm-multipath - IO queue dispatch based on FPIN Congestion/Latency notifications.

[Muneendra Kumar M <muneendra.kumar@broadcom.com>]

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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.

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