> > > > it, because the max size for sendto() is 64kbyte.
> > > > 256kbyte message should be split into pieces before sending as
packet.
> > > > by the way, I set "bcast" in ha.cf as media.
> > > I assume you're working on a patch for this?
> > That means, heartbeat doesn't care for 256kB message before putting it
to
> > sendto()...
>
> Where did you find the 64kb limit here?
>
> > > > and, openais...
> > > > Unfortunately, we don't have enough experience to select this.
> > > I highly suggest you rectify that.
> > It's hard to convince many managers in a moment.
>
> Then you may have to recompile with larger limits, but UDP is not very
> efficient at transmitting such large messages.
Yes, it's UDP.
net/ipv4/udp.c(2.6.18-92.el5)
495 int udp_sendmsg(struct kiocb *iocb, struct sock *sk, struct \
msghdr *msg,
496 size_t len)
497 {
511 if (len > 0xFFFF)
512 return -EMSGSIZE;
in line 511, the limit for UDP packet is 65535 kbyte.
I got "EMSGSIZE" from here, so I suspect heartbeat as the cause of this.
If heartbeat send 256 kbyte message as it is,
UDP layer could not handle it.
Thanks,
Junko
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