Hello Pawel, Thursday, October 11, 2007, 11:27:07 AM, you wrote:
PJD> On Thu, Oct 11, 2007 at 10:47:44AM +0100, Robert Milkowski wrote: >> Hello Matthew, >> >> Thursday, October 11, 2007, 9:10:13 AM, you wrote: >> >> MA> Robert Milkowski wrote: >> >> I haven't looked into details but in theory one should be >> >> able to copy/move a file within the same datapool between datasets >> >> without having to actually copy data blocks... or maybe there's some >> >> detail which actually makes it hard to implement... >> >> MA> Once a block is referenced by multiple filesystem, it is nontrivial to >> MA> determine when it can be freed. >> >> In a way multiple snapshots are separate file systems, or clones... >> What's the difference? However I'm sure you right... PJD> Snapshot and clones are not autonomous datasets. A clone has always a PJD> parent, you can use 'zfs promote' to switch the relatioship, but you PJD> cannot make them independent, AFAIK. PJD> To Matthew: As I understand it, Robert was talking more about moving the PJD> blocks to another dataset, not creating a hardlink-like situation - only PJD> one dataset will reference the blocks after the move. Yep, with move that's what I had in mind. I've also was talking about zfscopy... -- Best regards, Robert mailto:rmilkowski at task.gda.pl http://milek.blogspot.com
