On Wed, Jul 16, 2025 at 10:10:03PM +0500, Roman Mamedov wrote: > If you dd the XFS image from an old 512b disk onto a newly bought large > 4K-sector HDD, would it also stop mounting on the new disk in the same way? > > Perhaps something to be improved on the XFS side? Nothing to be improved, as the sector size obviously matters. It is part of the hardware geometry that is fixed, as XFS can read and write down to the sector size boundary. Both for internal metadata, and through direct I/O also for applications. The latter is true for other file systems to, so even when you can change the sector size for some file systems, you will be subtly breaking applications instead.
