[Girder-users] Mixed asset stores and data migration

[John Roberts]

     I'm interested in possibly moving the contents of an existing 
Filesystem assetstore into a GridFS assetstore within the same Girder 
server.

     In the admin panel, it appears I could create additional 
assetstores.  Presumably, only one of them could be made "current" to 
capture subsequent file uploads.

     How would I migrate all the files from the filesystem assetstore 
into the GridFS store?

     Would I have to run the girder_client recursively against the 
existing files on Girder, download them and "re" upload them into Girder 
(hopefully now into the "current" GridFS assetstore)?

  * Would either girder_client or Girder itself say, "hey, that file is
    already here!  We'll save you time and skip your upload!"
  * This strikes me as similar to migrating between two girder
    instances, so would I have to be careful to make sure I copied meta
    data as well during the recursion?

     Or is it likely I'll need to run a separate Girder/Mongo instance 
with GridFS in place and do a complete migration to the new pair?

     As motivation for this exercise, we're considering running a 
girder/mongo pair within a docker overlay network where the mongo would 
reside on a server with lots of storage and the girder would reside on a 
server with lots of compute power.

Thanks,
John.


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