[tahoe-lafs-trac-stream] [tahoe-lafs] #393: mutable: implement MDMF

[tahoe-lafs]

#393: mutable: implement MDMF
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     Reporter:  warner        |       Owner:  kevan                                                                                                                 
         Type:  enhancement   |      Status:  assigned                                                                                                              
     Priority:  major         |   Milestone:  1.9.0                                                                                                                 
    Component:  code-mutable  |     Version:  1.0.0                                                                                                                 
   Resolution:                |    Keywords:  newcaps performance random-access privacy gsoc mdmf mutable backward-compatibility forward-compatibility review-needed
Launchpad Bug:                |  
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Comment (by warner):

 The patch I just attached is against -36, I think, but should still apply.
 Something funny is going on in the update() method when it decides which
 segments to modify: I'm seeing file corruption when small updates are made
 near the start of the second or thing segment. The test should trigger the
 problem I'm seeing, but you can also hit it manually by using 'curl' to
 PUT a few bytes into a large file (I'd suggest 3 or more segments) with
 offset=128*1024+1 . What I'm seeing is that the bytes wind up at the start
 of the file instead.

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Ticket URL: <http://tahoe-lafs.org/trac/tahoe-lafs/ticket/393#comment:83>
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