On Tue, Sep 18, 2001 at 03:03:06PM -0700, Mike Fedyk wrote: > > This seems to be the first main stream example of FS conversion in linux.
not really. ext3 really isn't any different from ext2 from a format perspective, the only thing `conversion' really does is add a journal inode (a file) and set a feature bit. do note that a dirty ext3 filesystem is not backward compatible, though i believe this is because the magic or version number or something is intentionally changed to prevent ext2fs from recognizing it. probably because the old system would make changes to the filesystem, not recorded in the journal and when you put it back in an ext3 box the journal would be replayed stepping all over changes made on the ext2 box, iow -> big time fs corruption. thats just my guess though i haven't followed ext3 development. -- Ethan Benson http://www.alaska.net/~erbenson/
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