On 16.02.22 г. 22:21 ч., Josef Bacik wrote:
Currently we disallow reflink and dedupe if the two files aren't on the same vfsmount. However we really only need to disallow it if they're not on the same super block. It is very common for btrfs to have a main subvolume that is mounted and then different subvolumes mounted at different locations. It's allowed to reflink between these volumes, but the vfsmount check disallows this. Instead fix dedupe to check for the same superblock, and simply remove the vfsmount check for reflink as it already does the superblock check. Signed-off-by: Josef Bacik <josef@xxxxxxxxxxxxxx>
Reviewed-by: Nikolay Borisov <nborisov@xxxxxxxx>
