On Mon, Dec 31, 2007 at 07:20:30PM +1100, Darren Reed wrote: > Frank Hofmann wrote: > > http://www.opengroup.org/onlinepubs/009695399/functions/rename.html > > > > ERRORS > > The rename() function shall fail if: > > [ ... ] > > [EXDEV] > > [CX] The links named by new and old are on different file systems > > and the > > implementation does not support links between file systems. > > > > Hence, it's implementation-dependent, as per IEEE1003.1. > > This implies that we'd also have to look at allowing > link(2) to also function between filesystems where > rename(2) was going to work without doing a copy, > correct? Which I suppose makes sense.
If so then a cross-dataset rename(2) won't necessarily work. link(2) preserves inode numbers. mv(1) does not [when crossing devices]. A cross-dataset rename(2) may not be able to preserve inode numbers either (e.g., if the one at the source is already in use on the target). Nico -- _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
