QA output created by 168
Create subvolume 'SCRATCH_MNT/sv1'
At subvol SCRATCH_MNT/sv1
Create a readonly snapshot of 'SCRATCH_MNT/sv1' in 'SCRATCH_MNT/snap1'
At subvol SCRATCH_MNT/snap1
Create a readonly snapshot of 'SCRATCH_MNT/sv1' in 'SCRATCH_MNT/snap2'
At subvol SCRATCH_MNT/snap2
ERROR: send ioctl failed with -2: No such file or directory
ERROR: failed to read stream from kernel: Bad file descriptorAt subvol sv1
OK
At subvol snap1
OK
ERROR: empty stream is not considered valid
failed to open /mnt/scratch/snap2: No such file or directory