Re: XFS -git changes and Linux-VServer patch porting

[Josef Sipek <jsipek@xxxxxxxxxxxxxxxxx>]

On Wed, Jul 18, 2007 at 03:49:07PM +0200, Radoslaw Szkodzinski wrote:
> Linux-VServer patch adds 2 new flags: barrier and iunlink.
> With recent changes in -git (filestreams), XFS now lacks di_flags bits
> to add these.
> iunlink flag adds Copy-on-Write semantics to hard links, while barrier
> flag signifies a filesystem barrier no virtual context can pass.
> 
> I'd like to know how to possibly resolve this problem w/o negatively
> impacting performance (especially of iunlink) or changing on-disc
> format in an incompatible way, as well as being more future-proof.

A while back, I mentioned that it would be nice to have a whiteout inode
flag (I've since changed my mind) but the answer I got from Dave Chinner,
et. al., was to use xattrs.

Josef 'Jeff' Sipek.

-- 
If I have trouble installing Linux, something is wrong. Very wrong.
                - Linus Torvalds