Very slow compared to df

[HaleTom]

% time /bin/df > /dev/null
/bin/df > /dev/null  0.00s user 0.00s system 68% cpu 0.005 total
% time /bin/duf > /dev/null
/bin/duf > /dev/null  0.00s user 0.01s system 0% cpu 5.133 total	

I have 5 x-systemd.device-timeout entries in /etc/fstab, each =200ms, so I'm not sure where the 5 seconds is coming from.

[muesli]

Can't reproduce, I will require more information.

[HaleTom]

Is there a debug mode for that kind of information?

[C0rn3j]

You could try sudo journalctl -f and see if anything pops up there, or strace and smashing enter when it freezes.

You could also provide lsblk -o +fstype,label,uuid,model, /proc/mounts and /etc/fstab I suppose.

And the versions/kernel you're running.