On Mon, May 15, 2000 at 07:58:42PM +0530, Pankaj wrote: > i have a blur idea about shadowfs. > is there a page that deals with the > topic from begining. pls direct me > to it so that i can understand what > is going on.
I doubt there is any manpage, But I can tell you what shadowfs is to be. You have 1 directory tree, on 1 filesystem (example: on 1 disk) and 2nd directory tree, maybe on the other disk. Shadowfs merges both trees, so : if you have : ~/1 - first directory/filesystem ~/2 - second directory/filesystem ~/shadow - shadowfs merging them both $ cd ~/1 $ ls a b c $ cd ~/2 $ ls d e f $ cd ~/shadow $ ls a b c d e f Of course there might be more than 2 directory trees/filesystems/disks Possible problems are : - what to do if the same file appear more than one subfilesystem - what to do if one of subfilesystem changes - how to implement write side of shadowfs, - subdirectories of subfilesystems - if two users have permisions to different set of directories under the same name, they might end with seeing other file under the same name and especially: - what to do if something actually used is deleted on one of subfilesystems
