Re: Is Ceph right for me?

Lionel Bouton <lionel+ceph@xxxxxxxxxxx> · Thu, 11 Jun 2015 20:28:59 +0200



    On 05/20/15 23:34, Trevor Robinson -
      Key4ce wrote:

    
        Hello,
         
        Could somebody please advise me if Ceph is
          suitable for our use?
         
        We are looking for a file system which is
          able to work over different locations which are connected by
          VPN. If one locations was to go offline then the filesystem
          will stay online at both sites and then once connection is
          regained the latest file version will take priority. 
      
    
    CephFS won't work well (or at all when the connections are lost).
    The only part of Ceph which would work is RGW replication but you
    don't get a filesystem with it and I'm under the impression that a
    multi-master replication might be tricky (to be confirmer).

    
    Coda's goals seems to match your needs. I'm not sure if it's still
    actively developped (there is a client distributed with the Linux
    kernel though).

    http://www.coda.cs.cmu.edu/

    
    Last time I tried it (several years ago) it worked well enough for
    me.

    
        The main use will be for website files so
          the changes are most likely to be any uploaded files and cache
          files as a lot of the data will be stored in a SQL database
          which is already replicated.
      
    
    If your setup is not too complex, you might simply handle this with
    rsync or unison.

    
    Best regards,

    
    Lionel

  
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