Hi,
Is there any way to change the metadata pool for a cephfs without
losing any existing data? I know how to clone the metadata pool using rados
cppool. But the filesystem still links to the original metadata pool no
matter what you name it.
The motivation here is to decrease the pg_num of the metadata pool. I
created this cephfs cluster sometime ago, while I didn't realize that I
shouldn't assign a large pg_num to such a small pool.
I'm not sure if I can delete the fs and re-create it using the existing
data pool and the cloned metadata pool.
Thank you.
Zhang Di
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