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Adalbert Hanßen
Asked: 2021-08-28 09:06:49 +0800 CST

How can I check if adding noatime to /etc/fstab was effective?

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To prevent my SSD from unnecessary write accesses, I entered noatime under the mount options in /etc/fstab for the system and home partitions:

UUID=bla-bla-bla-1 /       ext4  errors=remount-ro,noatime 0 1
UUID=bla-bla-bla-2 /home   ext4  defaults,noatime          0 2

After that I rebooted.

Now I am surprised that the command

find . * -atime -0,01 -type f -printf "%TY-%Tm-%TdT%TT %p\n" | sort -r | ssed -R 's/^([^.]+)\.\d+ (.*)$/\1 \2/'

which I use occasionally to check which files have been accessed within the last approx. 1/4 hour, still works. On the one hand this is pleasing, but on the other hand I fear that noatime has not taken effect after all.

How can I check this?

mount

1 Answers

  1. Best Answer

    Type

    mount | grep noatime

    and will list all mountpoints with noatime in use. These 2 show relatime and you should see noatime next to your mountpoint.

    sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
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