Perhaps netapp is using a VFS overlay. There is really only one snapshot but it is shown in the overlay on every folder. Kind of the same with samba Shadow Copies.
---- From: Ulli Horlacher <frams...@rus.uni-stuttgart.de> -- Sent: 2017-09-09 - 21:52 ---- > On Sat 2017-09-09 (22:43), Andrei Borzenkov wrote: > >> > Your tool does not create .snapshot subdirectories in EVERY directory like >> >> Neither does NetApp. Those "directories" are magic handles that do not >> really exist. > > I know. > But symbolic links are the next close thing (I am not a kernel programmer). > > >> Apart from obvious problem with recursive directory traversal (NetApp >> .snapshot are not visible with normal directory list) > > Yes, they are, at least sometimes, eg tar includes the snapshots. > > > -- > Ullrich Horlacher Server und Virtualisierung > Rechenzentrum TIK > Universitaet Stuttgart E-Mail: horlac...@tik.uni-stuttgart.de > Allmandring 30a Tel: ++49-711-68565868 > 70569 Stuttgart (Germany) WWW: http://www.tik.uni-stuttgart.de/ > REF:<14c87878-a5a0-d7d3-4a76-c55812e75...@gmail.com> > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majord...@vger.kernel.org > 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 majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
