[tahoe-dev] up with filesystems! up with the web!

Zooko O'Whielacronx zookog at gmail.com
Mon Jan 4 07:57:52 UTC 2010


This has been an interesting conversation to read.  Thanks, Chimpy,
David-Sarah, and James.

It sounds like this is one of the "deep" ways that the design of
Octavia differs from Tahoe-LAFS.  I would be interested in how people
use Octavia in practice.  (I understand that it is currently at a very
early stage of development.)  I'm also interested in other ways that
the design of Octavia differs from that of Tahoe-LAFS.

I must confess I don't understand how it would be possible to
implement James's suggestion for a tree-shaped directory structure.  I
suppose it would require that your client be on the lookout for cycles
or converging links that had been created by a buggy or malicious
client or by some sort of accident caused by partition, and raise an
error if one is detected.  I suppose this would be analogous to the
way that fsck looks for such problems in local filesystems.

Hm, I also suppose that we'll need to implement something like this
sort of detection anyway in order to facilitate deep-copying between
Tahoe-LAFS which has arbitrary graph structure and local filesystems
which have (various) limitations on the structure: #104, #641, #850.

Regards,

Zooko

http://allmydata.org/trac/tahoe/ticket/104# does cp -r work as expected?
http://allmydata.org/trac/tahoe/ticket/641# tahoe backup should be
able to backup symlinks
http://allmydata.org/trac/tahoe/ticket/850# tahoe backup loops on
recursive links



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