[DRBD-user] protocol D: non blocking, async protocol?
mangoo at wpkg.org
Fri Jan 16 15:52:59 CET 2009
Of course there is no such thing as protocol D in DRBD.
Currently, local writes are only as fast as data reaches the remote side
(plus some TCP buffer tuning with protocol A, which won't make a big
difference in a long term).
This can be a bit of pain if you:
- have a slow link,
- want to use DRBD for disaster recovery mainly, not for (fast) failover,
- have lots of gigabytes to sync,
- want the writes to happen fast.
I was wondering if a non blocking, async protocol was ever considered in
So that local writes would be almost as fast as a local media allows;
anything which was not transferred to the remote side would be marked as
"dirty" and transferred when the time/bandwidth/conditions permit.
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