[Libguestfs] Root btrfs partition listed twice?

Hi, I know btrfs complicates filesystem lists due to the use of subvolumes. However, I just noticed that the root partition itself ends up being listed twice with list-filesystems, inspect-os, inspect-get-roots, etc... I'm seeing this in version 1.26, but haven't found anything directly resolving this in newer versions. These commands all show the partition listed twice as in the following output: /dev/sda2 btrfsvol:/dev/sda2/@ The output above complicates the existing virt-v2v process, as it prompts users to select the appropriate root filesystem. (Either one works for the conversion.) I've patched v2v to strip out the duplicate 'btrfsvol' entry if the partition itself is in both strings, but wanted to run the problem past the list before working around it at that level. Has this issue been seen before? For the record, here's the full filesystem list: /dev/sda1: swap btrfsvol:/dev/sda2/@: btrfs btrfsvol:/dev/sda2/boot/grub2/i386-pc: btrfs btrfsvol:/dev/sda2/boot/grub2/x86_64-efi: btrfs btrfsvol:/dev/sda2/home: btrfs btrfsvol:/dev/sda2/opt: btrfs btrfsvol:/dev/sda2/srv: btrfs btrfsvol:/dev/sda2/tmp: btrfs btrfsvol:/dev/sda2/usr/local: btrfs btrfsvol:/dev/sda2/var/crash: btrfs btrfsvol:/dev/sda2/var/lib/mailman: btrfs btrfsvol:/dev/sda2/var/lib/named: btrfs btrfsvol:/dev/sda2/var/lib/pgqsl: btrfs btrfsvol:/dev/sda2/var/log: btrfs btrfsvol:/dev/sda2/var/opt: btrfs btrfsvol:/dev/sda2/var/spool: btrfs btrfsvol:/dev/sda2/var/tmp: btrfs btrfsvol:/dev/sda2/.snapshots: btrfs /dev/sda2: btrfs Thanks! Mike