Re: [CentOS] rare but repeating system crash in C7

I commented out those entries in /etc/auto.master before modifying the fstab entry:

UUID=259ec5ea-e8a4-465a-9263-1c06217b9aaf /mnt/backup ext4,x-systemd.automount,x-systemd.idle-timeout=15min noauto 0 2

That's not correct. See 'man fstab'. It should be

device mount-point filesystem-type options dump fsck

So you should have:

UUID=259ec5ea-e8a4-465a-9263-1c06217b9aaf /mnt/backup ext4 x-systemd.automount,x-systemd.idle-timeout=15min,noauto 0 2

which is exactly as it was before except for the x-systemd entries as you described.

Yeah, you put them in the wrong place.

P.