Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Mon, 15 Sep 2008, Lars Ellenberg wrote: > please do not hijack a thread. I am sorry, did not know I did that. > no. > you can use bonding, though, > which is recommend. You can't bond and IPoIB infiniband interface with a Gig E Ethernet Interface. >> The 2nd question is, assuming that DRBD can not be configured to use two >> networks, how safe is it for me to configure fencing to use both network >> and have DRBD run as primary/primary for a while in split brain? > > please define "safe". Having DRBD recover without losing data. > as long as the files stay the same size and you are not using some > rebalancing, auto defragmenting or log structured file system (you don't), > that is just fine. They are xen DomU images, so yes, they say the same size. > problem is: > drbd has no three (not even two!) way merge. > > so after you connect them again and let them resync, > its either the yellow, or the blue. > the respective other is warped back in time > to where it has been before the split brain. Got ya, so if files change on each box, the changes will only survive on one box? ><> Nathan Stratton CTO, BlinkMind, Inc. nathan at robotics.net nathan at blinkmind.com http://www.robotics.net http://www.blinkmind.com