Hi Zdenek, On Wed, Jan 17, 2024 at 11:36:24AM +0100, Zdenek Kabelac wrote: > Lvm tool as such doesn't really have any problems with mixing 4K and 512b > disks within a single VG That's interesting, though in my case I have done a block-based copy of an LV from a system where all PVs are 512b to one where all PVs are 4K. So out of interest, what does LVM do when one PV within same VG says 512b and another says 4K - just pass on 512b for every LV I assume, unless allow_mixed_block_size is set as you mention? Thanks, Andy