search for: reversibil

* "Bill Cunningham" <billcun@suddenlink.net> hat geschrieben: > I hope this is the right list. I have created an ext2 filesystem and > removed the dir_index feature. I don't know if this kind of experimentation > is going to help me learn something about filesystems or not. Well what is > dir_index? Then I ran e2fsck -f -v -pD and the /dev file. Now what did I >

...e2fsck, all those indexes will be > removed. If you later readd the feature and e2fsck, those indexes get > recreated. I see. Htree kept bieng mentioned. I am guessing that means "hash tree". I guess I would like to see all these filesystems, if possible, completely backwards reversibile. If you have ext2, simply add a journaling inode. It can be removed too. Now with ext4, removing "extents" might present much more of a difficulty. >>From the developer point of view, one approach is to read and understand > the kernel sources for ext2/3/4 or just start...

I hope this is the right list. I have created an ext2 filesystem and removed the dir_index feature. I don't know if this kind of experimentation is going to help me learn something about filesystems or not. Well what is dir_index? Then I ran e2fsck -f -v -pD and the /dev file. Now what did I remove? Htree. I guess it can always be put back and it's on an experimental filesystem.