[root@myhost ~]# btrfs fi show -d
Label: none  uuid: 48f0e952-a176-481e-a184-6ee51acf54b1
        Total devices 5 FS bytes used 1.29TiB
        devid    1 size 931.51GiB used 664.03GiB path /dev/sda2
        devid    3 size 931.51GiB used 664.03GiB path /dev/sdc2
        devid    4 size 931.51GiB used 664.03GiB path /dev/sdd2
        devid    6 size 931.51GiB used 664.03GiB path /dev/sdb2
        *** Some devices missing

btrfs-progs v4.2.2
[root@myhost ~]# mount /dev/sda2 /mnt/
[root@myhost ~]# btrfs fi show
Label: none  uuid: 48f0e952-a176-481e-a184-6ee51acf54b1
        Total devices 4 FS bytes used 1.29TiB
        devid    1 size 931.51GiB used 664.03GiB path /dev/sda2
        devid    3 size 931.51GiB used 664.03GiB path /dev/sdc2
        devid    4 size 931.51GiB used 664.03GiB path /dev/sdd2
        devid    6 size 931.51GiB used 664.03GiB path /dev/sdb2

btrfs-progs v4.2.2
[root@myhost ~]# btrfs fi show -d
Label: none  uuid: 48f0e952-a176-481e-a184-6ee51acf54b1
        Total devices 5 FS bytes used 1.29TiB
        devid    1 size 931.51GiB used 664.03GiB path /dev/sda2
        devid    3 size 931.51GiB used 664.03GiB path /dev/sdc2
        devid    4 size 931.51GiB used 664.03GiB path /dev/sdd2
        devid    6 size 931.51GiB used 664.03GiB path /dev/sdb2
        *** Some devices missing

btrfs-progs v4.2.2
[root@myhost ~]# umount /dev/sda2 /mnt/


******
# dnf udpate '*btrfs*
...
******

[root@myhost ~]# btrfs --version
btrfs-progs v4.3.1
[root@myhost ~]# btrfs fi show -d
Label: none  uuid: 48f0e952-a176-481e-a184-6ee51acf54b1
        Total devices 5 FS bytes used 1.29TiB
        devid    1 size 931.51GiB used 664.03GiB path /dev/sda2
        devid    3 size 931.51GiB used 664.03GiB path /dev/sdc2
        devid    4 size 931.51GiB used 664.03GiB path /dev/sdd2
        devid    6 size 931.51GiB used 664.03GiB path /dev/sdb2
        *** Some devices missing

[root@myhost ~]# mount /dev/sda2 /mnt/
[root@myhost ~]# btrfs fi show
Label: none  uuid: 48f0e952-a176-481e-a184-6ee51acf54b1
        Total devices 4 FS bytes used 1.29TiB
        devid    1 size 931.51GiB used 664.03GiB path /dev/sda2
        devid    3 size 931.51GiB used 664.03GiB path /dev/sdc2
        devid    4 size 931.51GiB used 664.03GiB path /dev/sdd2
        devid    6 size 931.51GiB used 664.03GiB path /dev/sdb2

[root@myhost ~]# btrfs fi show -d
Label: none  uuid: 48f0e952-a176-481e-a184-6ee51acf54b1
        Total devices 5 FS bytes used 1.29TiB
        devid    1 size 931.51GiB used 664.03GiB path /dev/sda2
        devid    3 size 931.51GiB used 664.03GiB path /dev/sdc2
        devid    4 size 931.51GiB used 664.03GiB path /dev/sdd2
        devid    6 size 931.51GiB used 664.03GiB path /dev/sdb2
        *** Some devices missing