[tahoe-dev] detecting weak uploads and share rebalancing Re: Share rebalancing
zooko at zooko.com
Sat Oct 10 23:36:20 UTC 2009
On Saturday,2009-10-10, at 16:01 , Shawn Willden wrote:
>> Also Kevan Carstensen's implementation of #778 would make it so
>> that those uploads are reported as failing
> It would cause the uploads to fail, which is good, but it would
> also lose my careful selection of FEC parameters.
Hm, are you thinking of #791? It began life as #778, but calved off
into its own ticket.
The patch that Kevan has written for #778 would cause weak uploads to
fail, as you desire, without changing your FEC parameters. However
the current version of his patch has a problem -- in certain unusual
edge conditions it could cause a strong upload to fail.
> In any case, the more important part of my question was how to fix
> the present problem, rather than how to avoid it in the future :-)
Ah, yes. So the process you described sounds like it would work, to
me, but for immutable files there is an easier way -- just copy the
share files to other servers. :-)
http://allmydata.org/trac/tahoe/ticket/778 # "shares of happiness" is
the wrong measure; "servers of happiness" is better
http://allmydata.org/trac/tahoe/ticket/791 # Optimize FEC parameters
to increase download performance
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