Fwd: Prioritize Heartbeat packets

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Hidden HTML ... trying agin...

---------- Forwarded message ----------
From: Robert LeBlanc <robert@xxxxxxxxxxxxx>
Date: Fri, Mar 6, 2015 at 5:20 PM
Subject: Re:  Prioritize Heartbeat packets
To: "ceph-users@xxxxxxxxxxxxxx" <ceph-users@xxxxxxxxxxxxxx>,
ceph-devel <ceph-devel@xxxxxxxxxxxxxxx>


I see that Jian Wen has done work on this for 0.94. I tried looking
through the code to see if I can figure out how to configure this new
option, but it all went over my head pretty quick.

Can I get a brief summary on how to set the priority of heartbeat
packets or where to look in the code to figure it out?

Thanks,

On Thu, Aug 28, 2014 at 2:01 AM, Daniel Swarbrick
<daniel.swarbrick@xxxxxxxxxxxxxxxx> wrote:
>
> On 28/08/14 02:56, Sage Weil wrote:
> > I seem to remember someone telling me there were hooks/hints you could
> > call that would tag either a socket or possibly data on that socket with a
> > label for use by iptables and such.. but I forget what it was.
> >
>
> Something like setsockopt() SO_MARK?
>
>        *SO_MARK *(since Linux 2.6.25)
>               Set the mark for each packet sent through this socket (similar
>               to the netfilter MARK target but socket-based).  Changing the
>               mark can be used for mark-based routing without netfilter or
>               for packet filtering.  Setting this option requires the
>               *CAP_NET_ADMIN *capability.
>
> Alternatively, directly set IP_TOS options on the socket, or SO_PRIORITY
> which sets the IP TOS bits as well.
>
>
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