for even better overview, it is possible to label harddisks & partitions like this:

# this can be done on mounted  ext4 / ext3 / ext2 partitions
# swap partitions can not be labeled
tune2fs -L "LABEL" /dev/sdaX

# with xfs it is more complicated
# can only be labeld on "offline" / unmounted partitions
xfs_admin -l /dev/disk/by-id/dm-name-cl-root 
label = ""

xfs_admin -L "root" /dev/disk/by-id/dm-name-cl-root 
xfs_admin: /dev/disk/by-id/dm-name-cl-root contains a mounted filesystem
fatal error -- couldn't initialize XFS library

create a new script:

vim /scripts/loop_df.sh 

with content:

#!/bin/bash
# will give overview of filesystem
# updates every 1 sec
while true;
do
	clear;
	echo '=========== looped harddisk info ';
	datum;
	dmesg|tail -n20;
	echo '=========== where is what';
	echo '';
	lsblk -o 'LABEL,NAME,MAJ:MIN,RM,SIZE,RO,FSTYPE,MOUNTPOINT,UUID';
	echo '';
	echo '=========== harddisk usage';
	df -Th;
	sleep 1;
done

mark executable

chmod +x /scripts/*.sh

run it

/scripts/loop_df.sh 

example output:

will refresh every second

=========== looped harddisk info 
/scripts/loop_df.sh: line 8: datum: command not found
[  109.345902] IPv6: ADDRCONF(NETDEV_CHANGE): enp4s0: link becomes ready
[  167.248212] usb 1-1: new high-speed USB device number 2 using ehci-pci
[  167.453396] usb 1-1: New USB device found, idVendor=152d, idProduct=578f, bcdDevice=14.02
[  167.453411] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  167.453422] usb 1-1: Product: External USB 3.0
[  167.453435] usb 1-1: Manufacturer: Intenso
[  167.476583] usbcore: registered new interface driver usb-storage
[  167.480751] scsi host8: uas
[  167.480883] usbcore: registered new interface driver uas
[  167.481666] scsi 8:0:0:0: Direct-Access     Intenso  External USB 3.0 1402 PQ: 0 ANSI: 6
[  167.483451] sd 8:0:0:0: Attached scsi generic sg5 type 0
[  167.484404] sd 8:0:0:0: [sdf] 976754646 4096-byte logical blocks: (4.00 TB/3.64 TiB)
[  167.484776] sd 8:0:0:0: [sdf] Write Protect is off
[  167.484787] sd 8:0:0:0: [sdf] Mode Sense: 5f 00 00 08
[  167.485282] sd 8:0:0:0: [sdf] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[  167.485657] sd 8:0:0:0: [sdf] Optimal transfer size 33550336 bytes
[  167.524171]  sdf: sdf1
[  167.526652] sd 8:0:0:0: [sdf] Attached SCSI disk
[  451.206331] EXT4-fs (sdf1): mounted filesystem with ordered data mode. Opts: (null)

=========== where is what
LABEL              NAME                                          MAJ:MIN RM   SIZE RO FSTYPE            MOUNTPOINT UUID
                   sda                                             8:0    0 238.5G  0                              
                   ├─sda1                                          8:1    0     1G  0 ext4              /boot      ...
                   └─sda2                                          8:2    0 237.5G  0 crypto_LUKS                  aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa
                     └─luks-aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa 253:0    0 237.5G  0 LVM2_member                  ...
                       ├─cl-root                                 253:1    0    50G  0 xfs               /          ...
                       ├─cl-swap                                 253:2    0   2.1G  0 swap              [SWAP]     ...
                       └─cl-home                                 253:3    0 185.4G  0 xfs               /home      ...
                   sdb                                             8:16   0   3.7T  0                              
storagepc:2        └─sdb1                                          8:17   0   3.7T  0 linux_raid_member            bbbbbbbb-bbbb-bbbb-bbbb-bbbbbbbbbbbb
ext4RAID1            └─md2                                         9:2    0   3.7T  0 ext4              /mnt/md2   m2m2m2m2-m2m2-m2m2-m2m2-m2m2m2m2m2m2
                   sdc                                             8:32   0   3.7T  0                              
storagepc:2        └─sdc1                                          8:33   0   3.7T  0 linux_raid_member            bbbbbbbb-bbbb-bbbb-bbbb-bbbbbbbbbbbb
ext4RAID1            └─md2                                         9:2    0   3.7T  0 ext4              /mnt/md2   m2m2m2m2-m2m2-m2m2-m2m2-m2m2m2m2m2m2
                   sdd                                             8:48   0   1.8T  0                              
storagepc.centos:0 └─sdd1                                          8:49   0   1.8T  0 linux_raid_member            dddddddd-dddd-dddd-dddd-dddddddddddd
ext4RAID2            └─md0                                         9:0    0   1.8T  0 ext4              /mnt/md0   m0m0m0m0-m0m0-m0m0-m0m0-m0m0m0m0m0m0
                   sde                                             8:64   0   1.8T  0                              
storagepc.centos:0 └─sde1                                          8:65   0   1.8T  0 linux_raid_member            dddddddd-dddd-dddd-dddd-dddddddddddd
ext4RAID2            └─md0                                         9:0    0   1.8T  0 ext4              /mnt/md0   m0m0m0m0-m0m0-m0m0-m0m0-m0m0m0m0m0m0
                   sdf                                             8:80   0   3.7T  0                              
StoragePC_B1       └─sdf1                                          8:81   0   3.7T  0 ext4              /mnt/sdf1  ffffffff-ffff-ffff-ffff-ffffffffffff

=========== harddisk usage
Filesystem          Type      Size  Used Avail Use% Mounted on
devtmpfs            devtmpfs  888M     0  888M   0% /dev
tmpfs               tmpfs     907M     0  907M   0% /dev/shm
tmpfs               tmpfs     907M  8.8M  899M   1% /run
tmpfs               tmpfs     907M     0  907M   0% /sys/fs/cgroup
/dev/mapper/cl-root xfs        50G  1.9G   49G   4% /
/dev/mapper/cl-home xfs       186G  1.4G  184G   1% /home
/dev/sda1           ext4      976M  257M  653M  29% /boot
/dev/md0            ext4      1.8T  1.2T  593G  66% /mnt/md0
/dev/md2            ext4      3.6T  2.9T  566G  84% /mnt/md2
tmpfs               tmpfs     182M     0  182M   0% /run/user/1000
/dev/sdf1           ext4      3.6T  1.4T  2.1T  41% /mnt/sdf1

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