On Tue, Aug 10, 2021 at 12:31:43AM +0100, Alasdair G Kergon wrote: > When loading tables, our tools also always refer to devices using > the 'major:minor' format, which isn't affected, rather than using ^^^^^^^^^^^^^^^^^^^^ Wrong - that is also affected. So there is a new general constraint that a table must be loaded into a device before another device's table can reference that device. (The stacked device handling in lvm2 as supported by libdevmapper should always be doing this.) (The original implementation had to be a bit loose to accommodate multipath device paths that were essentially placeholders at the point they got set up.) Alasdair