[OpenAFS] Windows Offline folders or Briefcase and AFS?

[Jeffrey Altman]

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I should also point out that although disconnected
operations are important; for Windows a persistent
cache is significantly more important.  At the moment,
we do not have the ability to persist several gigabytes
worth of data in the cache.  Every time the service
stops the cache data is lost.

The inability to successfully handle Overlapped Writes
is another problem.  I do not know for a fact, but I
will take a very good guess that file system synchronization
utilizes Overlapped Writes for performance.  If so,
until the support for sequential processing of CIFS
requests is implemented (along with signatures) it will
be next to impossible to properly support the Windows
client side caching.

I have some ideas of how to provide an equivalent
level of functionality for disconnected operations which
would be portable between either an SMB/CIFS or IFS
implementation of the AFS client.  This would provide
for the ability to specify afs volumes, directories, or
files which are desired to be accessed locally when the
afs servers for a given cell are not available.
Given the current development plan this work would not
begin until next summer and even then it is contingent
upon receiving the appropriate levels of funding from
the community to see it happen.

Jeffrey Altman



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