Change fsid of Ceph cluster after splitting it into two clusters

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Hi,

I've got a situation where I need to split a Ceph cluster into two.

This cluster is currently running a mix of RBD and RGW and in this case
I am splitting it into two different clusters.

A difficult thing to do, but it's possible.

One problem that stays though is that after the split both Ceph clusters
have the same fsid and that might be confusing.

Is there a way to change the fsid of an existing cluster?

Injecting an updated MONMAP and OSDMAP into the cluster?

It's no problem if this has to be done offline, but I'm just wondering
if this is possible.

Wido
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