[tahoe-dev] redistributing shares

Jody Harris imhavoc at gmail.com
Sat Jan 9 05:34:51 UTC 2010


I hope this is one that gets addressed in 1.6. This is a really big problem.

Early in our grid's development, I ended up with a directory completely
stored on a single node. (The files within are fine.) There is no way to
redistribute those shares in 1.5.

Thanks!

jody
----
- Think carefully.
- Contra mundum - "Against the world" (St. Athanasius)
- Credo ut intelliga - "I believe that I may know" (St. Augustin of Hippo)


On Tue, Dec 29, 2009 at 12:26 PM, Zooko O'Whielacronx <zookog at gmail.com>wrote:

> On Wednesday, 2009-12-23, at 23:24 , Jody Harris wrote:
>
> > I had a nice visit with Zooko about this today. I hope he'll post the
> tickets we discussed so that I can have a chance to look over them.
>
> My main thought when I chatted about this with Jody was that once we
> fix #778 then an upload will automatically rebalance as necessary to
> achieve servers of happiness, although it will not automatically
> rebalance beyond that (which would cost more upload bandwidth and time
> and could lead to complications if the added share uploads fail).  So,
> fixing #778 is at least a partial solution to #699 and it might be a
> sufficient solution.
>
> Oh, I just realized that there is another ticket that #778 might help
> with: #614.  Perhaps once #778 is done then #614 should be done based
> on #778.  I'll add notes to the tickets.
>
> Regards,
>
> Zooko
>
> http://allmydata.org/trac/tahoe/ticket/543# 'rebalancing manager'
> http://allmydata.org/trac/tahoe/ticket/614# redefine "Healthy" to be
> "Happy" for checker/verifier/repairer
> http://allmydata.org/trac/tahoe/ticket/699# optionally rebalance
> during repair or upload
> 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/864# Automated migration of
> shares between storage servers
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>
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