On Tue, 15 Oct 2024 20:59:44 -0700 Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote: > What are "the latest POSIX changes"? > > This is mdadm change, it is not kernel. I limited subset of supported symbols in md device name to make it more portable and compatible with udev. If you are interested, here are details: https://git.kernel.org/pub/scm/utils/mdadm/mdadm.git/commit/?id=e2eb503bd797908f515b58428b274f1ba6a05349 Thanks, Mariusz