[tahoe-lafs-trac-stream] [tahoe-lafs] #1596: more specific error message for the case where too few servers are connected

[tahoe-lafs]

#1596: more specific error message for the case where too few servers are
connected
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     Reporter:           |      Owner:  somebody
  davidsarah             |     Status:  new
         Type:  defect   |  Milestone:  undecided
     Priority:  major    |    Version:  1.9.0
    Component:  code     |   Keywords:  error usability servers-of-
   Resolution:           |  happiness
Launchpad Bug:           |
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Old description:

> For downloads and uploads that fail because too few servers are
> connected, we should report that rather than reporting a problem with the
> specific file.
>
> k may differ between files in the case of downloads, but if we find
> ~~no~~ less than k shares and fewer than the configured
> {{{shares.needed}}} servers are connected, then the failure to find
> shares is probably due to lack of servers. For uploads to succeed, at
> least {{{shares.happy}}} servers must be connected.

New description:

 For downloads and uploads that fail because too few servers are connected,
 we should report that rather than reporting a problem with the specific
 file.

 k may differ between files in the case of downloads, but if we find ~~no~~
 less than k shares and fewer than the configured {{{shares.needed}}}
 servers are connected, then the failure to find shares is probably due to
 lack of servers. For uploads to succeed, at least {{{shares.happy}}}
 servers must be connected.

--

Comment (by daira):

 kpreid [ticket:1993#comment:2] suggested that this error should use a 503
 HTTP error code.

-- 
Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/1596#comment:4>
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