[tahoe-dev] [tahoe-lafs] #1199: document known scaling issues

[tahoe-lafs]

#1199: document known scaling issues
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 Reporter:  zooko          |           Owner:  warner    
     Type:  enhancement    |          Status:  new       
 Priority:  major          |       Milestone:  eventually
Component:  documentation  |         Version:  1.8β      
 Keywords:  scalability    |   Launchpad Bug:            
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 There are some known issues with scaling Tahoe-LAFS up in terms of
 servers, users, files, aggregate data. Most of these issues were learned
 from the allmydata.com experience. Most of them are "soft limits" --
 things start taking an inconveniently long time -- rather than hard limits
 where something that used to work fails.

 Examples:

  * it took a long time to do deep-add-lease and deep-repair
  * user data was spread over all the servers and some files and
 directories were reachable only through other directories, so if a few
 servers were (even temporarily) off-line then some users accounts couldn't
 be deep-add-leased, deep-repaired, or recursively downloaded. There was no
 good support for a deep- operation to stop cleanly when it encounters an
 unrecoverable file or directory and show its partial results to the user
 or preserve its state for later retry.

-- 
Ticket URL: <http://tahoe-lafs.org/trac/tahoe-lafs/ticket/1199>
tahoe-lafs <http://tahoe-lafs.org>
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