You might want to try:-
http://blog.multiplay.co.uk/dropzone/freebsd/carp-mtu.patch
Be warned it doesn't do any validation so if you use it against physical
interfaces with a smaller MTU things will likely go badly wrong, hell
they may go badly wrong anyway as its just a very quick and dirty hack ;-)
Regards
Steve
----- Original Message -----
From: "Dmitry Morozovsky" <ma...@rinet.ru>
To: <freebsd-stable@FreeBSD.org>
Sent: Monday, March 04, 2013 10:49 PM
Subject: carp on stable/9: is there a way to keep jumbo? (fwd)
Collegaues,
sorry, sent to the wrong list (the only escuse for me is possibly that I'm
trying to make HAST base on carp...)
--
Sincerely,
D.Marck [DM5020, MCK-RIPE, DM3-RIPN]
[ FreeBSD committer: ma...@freebsd.org ]
------------------------------------------------------------------------
*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- ma...@rinet.ru ***
------------------------------------------------------------------------
---------- Forwarded message ----------
Date: Tue, 5 Mar 2013 02:31:51
From: Dmitry Morozovsky <ma...@rinet.ru>
To: freebsd...@freebsd.org
Subject: carp on stable/9: is there a way to keep jumbo?
Dear collesagues,
yes, I know glebius@ overhauled carp in -current, but I'm a bit nervous to
deploy bleeding edge system on a NAS/SAN ;)
So, my question is about current state of carp in stable/9: building HA pair I
found that carp interfaces lose jumbo capabilities:
root@cthulhu4:~# ifconfig | grep mtu
em0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu
9000
em1: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu
9000
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
lagg0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu
9000
carp0: flags=49<UP,LOOPBACK,RUNNING> metric 0 mtu 1500
carp1: flags=49<UP,LOOPBACK,RUNNING> metric 0 mtu 1500
root@cthulhu4:~# ifconfig carp1 mtu 9000
ifconfig: ioctl (set mtu): Invalid argument
Is it unavoidable at the moment, or am I missing something obvious?
Thanks!
--
Sincerely,
D.Marck [DM5020, MCK-RIPE, DM3-RIPN]
[ FreeBSD committer: ma...@freebsd.org ]
------------------------------------------------------------------------
*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- ma...@rinet.ru ***
------------------------------------------------------------------------
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