> > >> Just to clarify. Suppose you insert an object into rados directly, you > won't be able to see that file > in cephfs anywhere, since it won't be listed in MDS. Correct? > > Meaning, you can start using CephFS+MDS at any point in time, but it will > only ever list objects/files > that were inserted through cephfs/FUSE, nothing else.? >
Correct. > > As S3 and Swift are just interfaces to tlak to radosgw, I believe objects > added through S3 are also visible > on Swift? > I believe so, but I haven't setup Swift to test it. RGW has users, and the user has S3 and Swift credentials. So I'm pretty sure. Swift has more features than S3. IIRC, extra ACLs and metadata. So you're better off sticking with one rather than mixing protocols. It should work, but you might get some weirdness. > > When adding the S3/Swift users, I noticed that radosgw-admin is capable of > a lot more. The use of how the commands > are tied together though isn't very intuitive and I had to rely on > examples to get things done. > > I'm now figuring out how to use that so I can list the size of a single > bucket and user. > > Check out `radosgw-admin bucket stats`. I don't think you can get usage for a single user, but you can sum over the user's buckets.
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