dunno if this thread is dead, but im inclined to patch in cp --reflink to "fdupes" prog. It currently does provide a poor-man's dedupe via md5sum and hardlink, or delete.
all the better if the distro-kernels can backport cross-snapshot reflinks sooner than later. On Sun, Apr 29, 2012 at 1:05 PM, Norbert Scheibner <[email protected]> wrote: > Am 29.04.2012, 01:53 Uhr, schrieb Hubert Kario <[email protected]>: > > >> On Sunday 01 of April 2012 11:42:23 Jérôme Poulin wrote: >>> >>> On Sun, Apr 1, 2012 at 11:27 AM, Norbert Scheibner <[email protected]> wrote: >>> > Some users tested this patch successfully for week,s or months in 2 or >>> > 3 >>> > kernel versions since then, true? >>> If this feature must be implented in VFS in another patch, why not >>> just activate what works and make the future patch disable it again? >> >> >> Why would (should) it be impleemented in VFS? reflink copy is completely >> different from normal copy and hard link. > > > I wouldn't make a VFS issue out of that. That should be another discussion. > > But: > >> Subvolumes in btrfs are barriers *only* in btrfs and not visible in VFS. > > > That is just a bug in my opinion, so it should work anyway, but to look at > it from VFS point of view is strengthening me in wanting the outstanding > patches integrated, as this feature could be supported by VFS in the future. > > >> IMHO it's strictly btrfs business and not supporting reflink copy between >> arbitrary directories is a bug. > > > I don't know exactly, but I think ZFS is another candidate for "cp > --reflink". For some of the log-structured filesystems this could be usefull > too, but I don't know if some of them already supports this or plan to > support this in the future. > > Greetings > Norbert > > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to [email protected] > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
