On Thu, Aug 9, 2018 at 7:30 AM, Andrew Jeddeloh <andrew.jeddeloh@xxxxxxxxxx> wrote: > I think I found a bug with partition scanning/loopback devices with 4k > logical sectors. It affects 4.14.x and 4.17.x kernels (and presumably > others). I've also filed the bug on the kernel bugzilla: > > https://bugzilla.kernel.org/show_bug.cgi?id=200749 > > Copied from the bugzilla report: > > Loop devices with the logical sector size set to 4096 do not > autodetect partitions when attached. It may be the case for devices > with 4k logical sectors in general, but I do not have hardware to test > that. I have not tested with non-GPT disks. You may setup 4k sector-size with scsi_debug or qemu virtio-scsi, then try to reproduce on these devices. Cc block list. Thanks, Ming Lei
