Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Tue, Mar 17, 2009 at 09:57:48AM +0100, Iustin Pop wrote: > Hi, > > I've searched the docs (and slightly the sources) but I can't find a > definitive answer about the following. Note that I'm using DRBD 8.0.12, > not latest version. > > The man page for drbdsetup makes it sound like both ends of a drbd pair > will ping the other in case of no activity. However, in practice on an > unused device, only one of the two TCP connections that is used by the > DRBD pair sees pings; the other one sees no traffic at all. right. "DRBD Pings" are only send via the "meta connection", not the "data connetion". > (This would not usually be a problem, except that if one has iptables > and conntrack enabled on the machine, and the device is not used for > long enough time, the second TCP connection will be forgotten by the > conntrack module) Ouch. hm. are there tcp keepalive packets? or should be do our in DRBD protocol keepalive as well? -- : Lars Ellenberg : LINBIT HA-Solutions GmbH : DRBD®/HA support and consulting http://www.linbit.com DRBD® and LINBIT® are registered trademarks of LINBIT, Austria. __ please don't Cc me, but send to list -- I'm subscribed