[tahoe-lafs-trac-stream] [Tahoe-LAFS] #283: implement mutable-file upload/download helpers

[Tahoe-LAFS]

#283: implement mutable-file upload/download helpers
-------------------------+-------------------------------------------------
     Reporter:  warner   |      Owner:
         Type:           |     Status:  new
  enhancement            |  Milestone:  undecided
     Priority:  major    |    Version:  0.7.0
    Component:  code-    |   Keywords:  mutable upload-helper upload
  mutable                |  download
   Resolution:           |
Launchpad Bug:           |
-------------------------+-------------------------------------------------
Changes (by zooko):

 * keywords:  mutable helper upload download => mutable upload-helper upload
     download


Old description:

> In addition to the CHK-upload helper (#116) and the CHK-download helper
> (#268), we could use a helper for mutable files. This helper would allow
> clients to read and write directories without talking to all of the
> storage
> servers.
>
> If all four helpers are implemented, then we can change the introducer
> configuration to isolate the clients from the storage servers. If any of
> these helpers are not implemented, the clients must continue to talk to
> all
> the storage servers.
>
> This ticket is specifically about the mutable-file upload/download
> helper.

New description:

 In addition to the CHK-upload helper (#116) and the CHK-download helper
 (#268), we could use a helper for mutable files. This helper would allow
 clients to read and write directories without talking to all of the
 storage
 servers.

 If all four helpers are implemented, then we can change the introducer
 configuration to isolate the clients from the storage servers. If any of
 these helpers are not implemented, the clients must continue to talk to
 all
 the storage servers.

 This ticket is specifically about the mutable-file upload/download helper.

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Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/283#comment:6>
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