Changing pg_num => RBD VM down !

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Hi all,

I have a Giant cluster in production.

Today one of my RBD pools had the "too few pgs" warning. So I changed
pg_num & pgp_num.

And at this moment, some of the VM stored on this pool were stopped (on
some hosts, not all, it depends, no logic)

All was running fine for months...

Have you ever seen this ?
What could have caused this ?

Thank you.


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