[Pacemaker] Exchanging data between resource agent instances

[Riccardo Bicelli]

Hello,
anyone knows if is it possible to exchange data between two instances of a
resource agent?

I have a Master/Slave resource agent that, when slave,  has to create a
dummy device in same size of a given block device (DRBD) running on Master.

Since the  block device is not accessible when the resource is slave, I was
wondering if master could read size of device and report it to the slave.

I don't like the idea of putting that size in the cib.

Riccardo.
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