On Thu, 2022-11-10 at 14:28 +0100, DdB wrote: > Am 10.11.2022 um 13:03 schrieb Greg Wooledge: > > If it turns out that '?' really is the filename, then it becomes a ZFS > > issue with which I can't help. > > just tested: i could create, rename, delete a file with that name on a > zfs filesystem just as with any other fileystem. > > But: i recall having seen an issue with corrupted filenames in a > snapshot once (several years ago though). At the time, i did resort to > send/recv to get the issue straightened out.
Well, the ZFS version in use is ancient ... But that I could rename it is a good sign. > But it is very much more likely, that the filename '?' is entirely > unrelated to zfs. Although zfs is perceived as being easy to handle > (only 2 commands need to be learned: zpool and zfs), Ha, it's for from easy. These commands have many options ... > it takes a while to > get acquainted with all the concepts and behaviors. Take some time to > play with an installation (in a vm or just with a file based pool should > be considered). Ah, yes, that's a good idea :)