Fsck on every bootup, slow bootup, moved /

Question

Today I started experiencing an annoying issue. When I boot to Ubuntu 15.04, it runs fsck on one disk every time. I've located the cause to this problem on my /home partition, which is located at /dev/sda5. After disabling it's bootup fsck completely from /etc/fstab, it no longer runs fsck on any disk. The partition appears clean even without running fsck.

Also after disabling the fsck procedure (this was also taking a lot of time before getting rid of fsck), Ubuntu takes a really long time to boot up (1m 30s), even though / is on an SSD.

Just to mix this up a little, I just moved my root-partition to the SSD mentioned above. The fsck-issue was occurring before I did this, but the slow boot-up did not.

Here's my sudo tune2fs -l /dev/sda5: http://pastebin.com/8fr7ZWCk Please inform me of any other info/logs I should include.

EDIT:

Looking at dmesg output, I saw this rather time-consuming task:

[    7.019883] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input18
[    7.020394] input: HDA NVidia HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input19
[    7.020611] input: HDA NVidia HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input20
[    7.020736] input: HDA NVidia HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card1/input21
[   96.330932] cgroup: new mount options do not match the existing superblock, will be ignored # this one is taking very long
[   96.348967] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   96.348969] Bluetooth: BNEP filters: protocol multicast
[   96.348972] Bluetooth: BNEP socket layer initialized
[   96.352761] Bluetooth: RFCOMM TTY layer initialized

I just noticed that my swap-partition was referenced to a wrong UID in fstab. I changed that (and also reinstalled my NVidia drivers), and now the system boots in just seven seconds!

Solution 1

I have found the cause of my issue.

In /etc/fstab, the swap partition was referencing a non-existing partition UID. I updated it, and now my system boots just fine!

Solution 2

More specifically for anyone who finds this with the error, in your /etc/fstab there should be all your drives with their mounted directories. At the end of every disk line, there are two numbers. IF the second number is either 2, or 1, it will do a different level of a Fs-check.

If you don't want an fs-check to run on every boot, set both numbers at the end to 0. That's it. Then save and reboot. No more Fs-check!

Comments

[ollpu]

Yup! For some reason, after fixing the swap-partition reference in /etc/fstab, fsck is no longer run even if I allow it as you specified.

[David]

@ollpu Hmm, it may be disabled in your settings

[ollpu]

And now it's running it again (and taking 9 precious seconds)! Something weird is going on...

[David Foerster]

-1 update-grub overwrites any previous changes to /boot/grub/grub.cfg. If you want to edit the kernel boot parameters, edit the GRUB_CMDLINE_LINUX_DEFAULT entry in /etc/default/grub, then run sudo update-grub.