root@archiso /tmp # mount -o defaults,relatime,discard,ssd,nodev /dev/vda1 /tmp/btrfs
root@archiso /tmp # ls -l  /tmp/btrfs
total 0
drwxr-xr-x 1 root root 122 Feb  8 15:33 @
drwxr-xr-x 1 root root   0 Feb  8 14:54 snapshots
root@archiso /tmp # ls -l /tmp/btrfs/@
total 16
lrwxrwxrwx 1 root root    7 Sep 30 19:17 bin -> usr/bin
drwxr-xr-x 1 root root  136 Feb  8 20:11 boot
drwxr-xr-x 1 root root    0 Feb  8 15:32 dev
drwxr-xr-x 1 root root 1550 Feb  8 20:33 etc
drwxr-xr-x 1 root root    0 Sep 30 19:17 home
lrwxrwxrwx 1 root root    7 Sep 30 19:17 lib -> usr/lib
lrwxrwxrwx 1 root root    7 Sep 30 19:17 lib64 -> usr/lib
drwxr-xr-x 1 root root    0 Sep 30 19:17 mnt
drwxr-xr-x 1 root root    0 Sep 30 19:17 opt
dr-xr-xr-x 1 root root    0 Feb  8 15:32 proc
drwxr-x--- 1 root root   38 Feb  8 17:58 root
drwxr-xr-x 1 root root    0 Feb  8 15:32 run
lrwxrwxrwx 1 root root    7 Sep 30 19:17 sbin -> usr/bin
drwxr-xr-x 1 root root   14 Sep 30 19:17 srv
dr-xr-xr-x 1 root root    0 Feb  8 15:32 sys
drwxrwxrwt 1 root root    0 Feb  8 15:32 tmp
drwxr-xr-x 1 root root   70 Feb  8 15:33 usr
drwxr-xr-x 1 root root  100 Feb  8 15:33 var
root@archiso /tmp #