Le 25/07/2013 23:27, Charles Lyons - ConnetU a écrit :
(...)
If we snapshot a copy of the secondary over to the new node before
your step (5), will the sync process just copy the data between the
time the snapshot was taken and step (5) or would it still require a
full re-sync (hence having gained nothing)?
Whether or not you "snapshot a copy of the secondary over to the new
node", a safe thing to do is to force-create new meta-data on the new
node, and let DRBD do a full sync.
Then you can still take advantage of a snapshot copy by setting
csums-alg : a full read will be done on both nodes but only the
different blocks will be written to the new node.
http://www.drbd.org/users-guide/s-resync.html#p-checksum-sync
Lionel Sausin.
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