[DRBD-user] Long downtime of two DRBD nodes

Lars Ellenberg Lars.Ellenberg at linbit.com
Mon Apr 26 13:21:13 CEST 2004

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


/ 2004-04-26 13:09:34 +0200
\ Xavier:
> Hi,
> 
> I've a question regarding downtime between two DRBD nodes. I've a
> replica working without problems. If I disconnect the secondary node
> for a few seconds, once reconnected, synchro restarts... perfect!
> 
> The secondary node must be moved to another datacenter. The move will
> take approx. 2/3 hours. What can append? Is there some specific things
> to take care of?
> The secondary configuration will NOT change, just a physical move.
> 
> Any experience?

"Theoretically" nothing to worry about.
Connection parameters stay the same?
presumably some sort of VPN?

Then just put it on the net again,
and you should see what we call a "SyncQuick",
i.e. all data blocks that were modified on the
Primary meanwhile will be transfered.
Depending on the amount of changed data, this
might not be as quick as the name would suggest.

If you need to reconfigure the network
settings on the Primary, you will probably get
a SyncAll instead.
In your special case, where you *know* that
nothing was changed on the Secondary
meanwhile, this can be avoid with manual
meta-data manipulationi, ask for details if
needed.

	Lars Ellenberg

	Lars Ellenberg



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