Mounts

Bind mount

mount --bind /some/where /else/where
mount --bind /some/where /else/where -o ro
mount /some/where /else/where -o bind,ro

Also mount submountpoints. Mountpoints inside /some/where are not accessible from /else/where by default.

mount --rbind /some/where /else/where

HDD spindown timeout

Install hdparm

sudo pacman -S hdparm

First it has to support APM (Advanced Power Management)

sudo blkid ## Get the UUID
sudo hdparm -B /dev/disk/by-uuid/

Not available

/dev/disk/by-uuid/
 APM_level  = not supported  ## You can NOT use this method

Disabled

dev/disk/by-uuid/
APM_level   = off  ## It is disabled and can be set

Activate it (241 for 30 minutes) (242 for 1 hour)

sudo hdparm -S 241 /dev/disk/by-uuid/

Activate it permanently in /etc/hdparm.conf

/dev/disk/by-uuid/ {
  spindown_time = 241
}

drivetemp kernel module

drivetemp reports S.M.A.R.T. temperatures to userspace (sensors) without root.

Temporal

sudo modprobe drivetemp

Permanent

/etc/modules-load.d/drivetemp.conf
---
drivetemp

They are exposed in /sys/class/hwmon/

S.M.A.R.T.

smartmontools

Show

sudo smartctl -a /dev/nvme0
sudo smartctl -a /dev/nvme0 | grep Temperature: | awk '{print $2}'

Test

sudo smartctl -t conveyance /dev/sdb
sudo smartctl -t short /dev/disk/by-uuid/1234-56AB
sudo smartctl -t long /dev/sdb
sudo smartctl -t extended /dev/sdb