svnfs

Hi, I am thinking about writing a file system for Linux that
transparently use a Subversion repository or working copy. Since
this will do a lot of extra commits, I think the "Eric goes to
lunch"/svk distributed model will work well together when editing
source code. It will transparently add useful versioning to many
applications (without needing svk-type two-layer version control).

Comments/suggestions?

Example command-line usage:

% svnmount http://svn.quarl.org/repos/foo ~/foo
% cd ~/foo
% diff -u main.C main.C@123 # like 'svn diff -r 123 main.C'
% mv a.py b.py # like 'svn mv a.py b.py'

Issues:

- whether to automatically commit each action; this could be a
  run-time per-WC option

- whether to automatically add or ignore a new file? e.g., object
  and temporary files should be ignored. Will the svn:ignore
  feature be good enough to handle this?

- is it easy to arrange for 'cp a b' to be 'svn cp a b', if cp is
  implemented as 'cat a > b'?

- how to support normal svn clients; perhaps instead of the mount
  above use:

  svn co http://svn.quarl.org/repos/foo ~/foo-wc
  svnmount ~/foo-wc ~/foo

  Without the intermediate WC, svnfs would have to operate in
  automatic-commit mode.

For example, I have my /etc stored in a Subversion repository.
But often this WC is manipulated by scripts that create, move,
delete files, and I have to manually tell svn that and also
commit; I would rather just have it be automatically versioned.

-- 
Karl 2004-10-06 19:48
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