exherbo chrooting

[root@localhost ~]# cryptsetup open /dev/nvme0n1p2 btrpool
Enter passphrase for /dev/nvme0n1p2: 
[root@localhost ~]# mount /dev/mapper/btrpool /mnt/exherbo/
[root@localhost ~]# mount -o rbind /dev /mnt/exherbo/dev/
[root@localhost ~]# mount -o bind /sys/ /mnt/exherbo/sys/
[root@localhost ~]# mount -t proc none /mnt/exherbo/proc/
[root@localhost ~]# cp /etc/resolv.conf /mnt/exherbo/etc/resolv.conf 
[root@localhost ~]# chroot /mnt/exherbo/
localhost / # ls
bin  boot  dev  etc  exherbo  home  kannar  lib  lib64  media  mnt  opt  proc  root  run  sbin  srv  sys  tmp  usr  var  
localhost / # cat /etc/fstab
/dev/mapper/btrpool /                btrfs defaults,noatime,discard,ssd,compress=zlib,subvol=/exherbo 0 1
/dev/mapper/btrpool /btrpool         btrfs defaults,noatime,discard,ssd,compress=zlib,subvol=/,noauto 0 1
/dev/mapper/btrpool /home            btrfs defaults,noatime,discard,ssd,compress=zlib,subvol=/home    0 1
/dev/mapper/btrpool /root            btrfs defaults,noatime,discard,ssd,compress=zlib,subvol=/root    0 1
/dev/mapper/btrpool /home/kannar     btrfs defaults,noatime,discard,ssd,compress=zlib,subvol=/kannar  0 1
tmpfs               /tmp             tmpfs defaults                                                   0 0
localhost / # btrfs subvolume list /
ID 262 gen 100 top level 5 path exherbo
ID 263 gen 101 top level 5 path kannar
localhost / # mount | grep btrfs
/dev/mapper/btrpool on / type btrfs (rw,relatime,seclabel,ssd,space_cache,subvolid=5,subvol=/)