Hi,

A supported way to access S3 objects from a filesystem mount is with RGW NFS.  
That is, RGW now exports the S3 namespace directly as files and directories, 
one consumer is an nfs-ganesha NFS driver.

Regards,

Matt

----- Original Message -----
> From: "David Turner" <drakonst...@gmail.com>
> To: "Jonathan Lefman" <jonathan.lef...@intel.com>, ceph-users@lists.ceph.com
> Sent: Wednesday, June 28, 2017 2:59:12 PM
> Subject: Re: [ceph-users] Mapping data and metadata between rados and cephfs
> 
> CephFS is very different from RGW. You may be able to utilize s3fs-fuse to
> interface with RGW, but I haven't heard of anyone using that on the ML
> before.
> 
> On Wed, Jun 28, 2017 at 2:57 PM Lefman, Jonathan < jonathan.lef...@intel.com
> > wrote:
> 
> 
> 
> 
> 
> Thanks for the prompt reply. I was hoping that there would be an s3fs (
> https://github.com/s3fs-fuse/s3fs-fuse ) equivalent for Ceph since there are
> numerous functional similarities. Ideally one would be able to upload data
> to a bucket and have the file synced to the local filesystem mount of that
> bucket. This is similar to the idea of uploading data through RadosGW and
> have the data be available in CephFS.
> 
> 
> 
> -Jon
> 
> 
> 
> From: David Turner [mailto: drakonst...@gmail.com ]
> Sent: Wednesday, June 28, 2017 2:51 PM
> 
> 
> 
> To: Lefman, Jonathan < jonathan.lef...@intel.com >; ceph-users@lists.ceph.com
> Subject: Re: [ceph-users] Mapping data and metadata between rados and cephfs
> 
> 
> 
> 
> 
> CephFS and RGW store data differently. I have never heard of, nor do I
> believe that it's possible, to have CephFS and RGW sharing the same data
> pool.
> 
> 
> 
> 
> 
> On Wed, Jun 28, 2017 at 2:48 PM Lefman, Jonathan < jonathan.lef...@intel.com
> > wrote:
> 
> 
> 
> 
> 
> Yes, sorry. I meant the RadosGW. I still do not know what the mechanism is to
> enable the mapping between data inserted by the rados component and the
> cephfs component. I hope that makes sense.
> 
> 
> 
> -Jon
> 
> 
> 
> From: David Turner [mailto: drakonst...@gmail.com ]
> Sent: Wednesday, June 28, 2017 2:46 PM
> To: Lefman, Jonathan < jonathan.lef...@intel.com >; ceph-users@lists.ceph.com
> Subject: Re: [ceph-users] Mapping data and metadata between rados and cephfs
> 
> 
> 
> 
> 
> You want to access the same data via a rados API and via cephfs? Are you
> thinking RadosGW?
> 
> 
> 
> 
> 
> On Wed, Jun 28, 2017 at 1:54 PM Lefman, Jonathan < jonathan.lef...@intel.com
> > wrote:
> 
> 
> 
> 
> 
> Hi all,
> 
> 
> 
> I would like to create a 1-to-1 mapping between rados and cephfs. Here's the
> usage scenario:
> 
> 
> 
> 1. Upload file via rest api through rados compatible APIs
> 
> 2. Run "local" operations on the file delivered via rados on the linked
> cephfs mount
> 
> 3. Retrieve/download file via rados API on newly created data available on
> the cephfs mount
> 
> 
> 
> I would like to know whether this is possible out-of-the-box; this will never
> work; or this may work with a bit of effort. If this is possible, can this
> be achieved in a scalable manner to accommodate multiple (10s to 100s) users
> on the same system?
> 
> 
> 
> I asked this question in #ceph and #ceph-devel. So far, there have not been
> replies with a way to accomplish this. Thank you.
> 
> 
> 
> -Jon
> 
> 
> 
> 
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> 

-- 
Matt Benjamin
Red Hat, Inc.
315 West Huron Street, Suite 140A
Ann Arbor, Michigan 48103

http://www.redhat.com/en/technologies/storage

tel.  734-821-5101
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