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

[Muneendra Kumar M]

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.

-- 
This electronic communication and the information and any files transmitted 
with it, or attached to it, are confidential and are intended solely for 
the use of the individual or entity to whom it is addressed and may contain 
information that is confidential, legally privileged, protected by privacy 
laws, or otherwise restricted from disclosure to anyone else. If you are 
not the intended recipient or the person responsible for delivering the 
e-mail to the intended recipient, you are hereby notified that any use, 
copying, distributing, dissemination, forwarding, printing, or copying of 
this e-mail is strictly prohibited. If you received this e-mail in error, 
please return the e-mail to the sender, delete it from your computer, and 
destroy any printed copy of it.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 4220 bytes
Desc: S/MIME Cryptographic Signature
URL: <http://listman.redhat.com/archives/dm-devel/attachments/20210331/9f6cde8a/attachment.p7s>