[DRBD-user] Using multiple routes to synchronize

Maurice Volaski mvolaski at aecom.yu.edu
Fri Jul 1 23:47:55 CEST 2005

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

Someone previously asked:

>Hi there!
>i'm running heartbeat with drbd mirroring.
>the heartbeats are being sent by eth1 and ttys0. the drbd devices are
>mirrored over eht1, too.
>if eth1 breaks, no more data is being mirrored, but the heartbeats still get
>over ttys0. is that a problem?
>imagine, the server crashes after eth1 was broken. the slave overtakes the
>services, but the data isn't up-to-date, because mirroring doesn't work
>so ive lost some important data.
>is there a possibility to prevent this problem?
>i thought about automatically change the mirror device to eth0, when eth1

I'm now in the same situation. Hearbeat is on eth0 and I can't go 
beyond that. Is there any plan to allow multiple independent pathways 
to synchronize? I don't see anything on the road map page, 
http://svn.drbd.org/drbd/trunk/ROADMAP. Simple NIC bonding won't help 
because the NICs in my case are on wholly different networks.

Maurice Volaski, mvolaski at aecom.yu.edu
Computing Support, Rose F. Kennedy Center
Albert Einstein College of Medicine of Yeshiva University

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