Yea, that was a cluster created during firefly...

Wish there was a good article on the naming and use of these, or perhaps a way 
I could make sure they are not used before deleting them.  I know RGW will 
recreate anything it uses, but I don’t want to lose data because I wanted a 
clean system.

-Brent

-----Original Message-----
From: Gregory Farnum <gfar...@redhat.com> 
Sent: Monday, April 15, 2019 5:37 PM
To: Brent Kennedy <bkenn...@cfl.rr.com>
Cc: Ceph Users <ceph-users@lists.ceph.com>
Subject: Re: [ceph-users] Default Pools

On Mon, Apr 15, 2019 at 1:52 PM Brent Kennedy <bkenn...@cfl.rr.com> wrote:
>
> I was looking around the web for the reason for some of the default pools in 
> Ceph and I cant find anything concrete.  Here is our list, some show no use 
> at all.  Can any of these be deleted ( or is there an article my googlefu 
> failed to find that covers the default pools?
>
> We only use buckets, so I took out .rgw.buckets, .users and 
> .rgw.buckets.index…
>
> Name
> .log
> .rgw.root
> .rgw.gc
> .rgw.control
> .rgw
> .users.uid
> .users.email
> .rgw.buckets.extra
> default.rgw.control
> default.rgw.meta
> default.rgw.log
> default.rgw.buckets.non-ec

All of these are created by RGW when you run it, not by the core Ceph system. I 
think they're all used (although they may report sizes of 0, as they mostly 
make use of omap).

> metadata

Except this one used to be created-by-default for CephFS metadata, but that 
hasn't been true in many releases. So I guess you're looking at an old cluster? 
(In which case it's *possible* some of those RGW pools are also unused now but 
were needed in the past; I haven't kept good track of them.) -Greg

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