Re: xattr names for unprivileged stacking?

Matthew Wilcox
2020-08-31T14:46:36Z

On Mon, Aug 31, 2020 at 10:25:32AM -0400, Theodore Y. Ts'o wrote:
> Oh, one other question about ADS; if a file system supports reflink,
> what is supposed to happen when you reflink a file? You have to
> consider all of the ADS's to be reflinked as well? In some ways, this
> is good, because the overhead and complexity will probably cause most
> file system maintainers to throw up their had, say this is madness,
> and refuse to implement it. :-)

Why is it so much harder than reflinking all the xattrs on a file?

If one thinks that Miklos' crazypants infinite hierarchy is the way to
go, then yes, this is absurdly complex. If these are closer in spirit
to being seekable xattrs, then it looks a lot more managable.