Qu, thanks, much appreciated. I'd missed that. Good, an easy fix.
>> Kernel 5.10.19 >> btrfs-progs 5.10.1 > > It's a known regression in v5.10.1 btrfs-progs, which did wrong path > normalization for device map. > > It's fixed in v5.11 btrfs-progs. > > Thanks, > Qu
