Why are RGW pools all prefixed with a period (.)?

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Hi,

It's something which has been 'bugging' me for some time now. Why are
RGW pools prefixed with a period?

I tried setting the root pool to 'rgw.root', but RGW (0.94.1) refuses to
start:

ERROR: region root pool name must start with a period

I'm sending pool statistics to Graphite and when sending a key like this
you 'break' Graphite: ceph.pools.stats.<pool_name>.kb_read

A pool like .rgw.root will break this since Graphite splits on periods.

So is there any reason why this is? What's the reasoning behind it?

-- 
Wido den Hollander
42on B.V.
Ceph trainer and consultant

Phone: +31 (0)20 700 9902
Skype: contact42on
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