Arch Linux

calmandniceperson

Member

Registered: 2019-02-14

Posts: 2

[SOLVED] Cannot mount btrfs partition with Linux kernel 4.20.7

Starting with kernel version 4.20.7 I cannot boot any longer due to the system not being able to mount my btrfs home partition. The system boots into emergency mode and trying to manually mount the home partition yields "unknown filesystem type 'btrfs'". I was told it was some sort of configuration issue, but I don't know what's misconfigured. Downgrading to Linux kernel 4.20.6 fixes the issue.

Last edited by calmandniceperson (2019-02-14 19:12:55)

Slithery

Administrator

From: Norfolk, UK

Registered: 2013-12-01

Posts: 5,776

Re: [SOLVED] Cannot mount btrfs partition with Linux kernel 4.20.7

The most likely cause is that your /boot partition wasn't mounted last time you updated the kernel.

Post the outputs of...

uname -a
pacman -Q linux

from a broken boot.

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No, it didn't "fix" anything. It just shifted the brokeness one space to the right. - jasonwryan
Closing -- for deletion; Banning -- for muppetry. - jasonwryan

aur - dotfiles

calmandniceperson

Member

Registered: 2019-02-14

Posts: 2

Re: [SOLVED] Cannot mount btrfs partition with Linux kernel 4.20.7

The most likely cause is that your /boot partition wasn't mounted last time you updated the kernel.

Post the outputs of...

uname -a
pacman -Q linux

from a broken boot.

Your response led me in the right direction. The installed version of the kernel and the running version of course did not match. I rebooted with the 4.20.6 kernel, mounted my boot partition to /boot and reinstalled the Linux kernel. I'm now using 4.20.8 successfully. Thank you very much!

2ManyDogs

Forum Fellow

Registered: 2012-01-15

Posts: 4,645

Re: [SOLVED] Cannot mount btrfs partition with Linux kernel 4.20.7

Please remember to mark your thread [SOLVED] (edit the title of your first post).