[fuse-devel] File System Write Filter for Compact Flash

[Chris M. <g1...@ho...>]

Dear all,
 
I am an avid fan of putting regular Linux distros onto a compact flash drive. As of now i create a tmpfs partition in memory, and then populate it with contents from the flash drive. When i wish to save the changes, I run a specific command which rsyncs the tmpfs back to the flash drive. This is courtesy of a Mr Vadim from http://gate-bunker.p6.msu.ru/. I know live Linux distros exist, but without going into debate there is a definite need for the following.
 
What would be nice is if a filter could be placed into the file system that caches any modifications of the underlying file to system memory. The changes should only be written when the user requests by running a user command that causes all changes to be flushed to the actual underlying disk. This would have the benefit of a smaller memory requirement given the entire disk is no longer required to be stored in tmpfs. Also write times would be vastly reduced as rsync isnt required to check the entire drive.
 
I have checked the archives and couldn't find anything, does anybody know of any such development underway, and if not would FUSE be a good place for me to start?
 
Best Regards,
 
Chris
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