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Free online course: RHEL Technical Overview.Here's an example of the /etc/fstab file on one of my test servers: You can use the stat command to see these details for a file or directory. When the file was last accessed ( atime).When the file was last changed ( ctime).When the file was last modified ( mtime).

But behind the scenes, the Linux kernel tracks several timestamps on files and directories: You probably are already aware of the Last Modified date on files and directories you can see that in an ls -l (long) directory listing or if you look at file details in a file manager. To understand noatime, you need to take a step back and understand a few things about Linux filesystems and how the kernel applies timestamps to files and directories.

But did I still need to? I decided to look into it further. I recently upgraded my computer to Fedora 32 and turned off atime on my upgraded system out of habit. Since atime is updated every time the file is accessed, my understanding was that it had a significant impact on system performance. Specifically, I wondered if it's still worth it to disable atime in more recent Linux systems. One tweak is atime, which is one of the three timestamps on every file on Linux (more on that later). I've been making some of these tweaks for so long that I recently wondered if I still needed to do them. They've become habits over the years: I back up my files, wipe the system, reinstall from scratch, restore my files, then reinstall my favorite extra applications.

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Whenever I upgrade Linux on my home computer, I have a list of tasks I usually do. This will attempt to mount all ( -a) drives in /etc/fstab and give a verbose ( -v) report. have mount re-read /etc/fstab to verify this works (it still mounts):.Testing your /etc/fstab entries:įinally, you can experiment with various options in your /etc/fstab entry without having to reboot: Please verify that your HDD is formatted as ext4 before trying this otherwise replace ext4 with the format used. If you'll try this entry in /etc/fstab, I hope it will work. They are fine as is, but 0 is the default for both so they aren't actually needed in your case. You do not need the noatime option as that is typically used only on devices such as SD cards which have a 'wearout mechanism'įinally, the two 0 (zero) values at the end of your /etc/fstab entry are the fifth and sixth fields.

Note that man fstab says do not report errors, but actually it halts the boot process on failure (last I checked anyway). Nofail: don't stop the boot process if this filesystem cannot be mounted. User: allow a user to mount the filesystem - which would include user pi (typically the same as uid=1000,gid=1000, but not necessarily) Rw: allow read and write on the mounted filesystem My recommendation for your 4th field ( fs_mntops) entries is as follows: rw,user,nofail Perhaps you intended that your 3rd field entry auto was to be included here? It would have been a valid entry. Moving on to your 4th field entries ( fs_mntops), you have the option string:

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The system manual man mount has additional details on the options. For example: ext4, ext3, vfat, exfat, ntfs, etc, etc. You should use instead the name of the file system used for formatting the drive/partition being mounted. AFAIK, auto is not a proper entry for the type of file system. It appears you have put the term auto in the third field. man fstab tells us that there should be an entry in this field. One of the problems I saw in your fstab entry was that the third field (fs_vfstype) is missing. I've always found the fstab incantations a bit arcane, and man fstab at least does a reasonable job of showing the syntax.

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Even though it's a bit dated now (Feb 2015), and has at least one error (re behaviour of nofail), it does reflect the software on your system. One step you may have overlooked was checking man fstab - in other words, the system manual for creating & maintaining /etc/fstab.

Fstab defaults