Arch Linux

89c51

Member

Registered: 2012-06-05

Posts: 741

[Solved] Linux-lts 3.14.31 doesn't boot (btrfs)

mount: unknown filesystem type 'btrfs' 

And drops me to an emergency shell.

Downgraded to 3.14.30 and it boots just fine.

Last edited by 89c51 (2015-02-15 15:47:28)

Scimmia

Fellow

Registered: 2012-09-01

Posts: 13,729

Re: [Solved] Linux-lts 3.14.31 doesn't boot (btrfs)

Sounds like there is a problem with your initramfs.

89c51

Member

Registered: 2012-06-05

Posts: 741

Re: [Solved] Linux-lts 3.14.31 doesn't boot (btrfs)

How i troubleshoot stuff like that. On all the updates thus far it worked without any intervention.

Scimmia

Fellow

Registered: 2012-09-01

Posts: 13,729

Re: [Solved] Linux-lts 3.14.31 doesn't boot (btrfs)

Someone went a bit further, and it does look like a bug: https://bugs.archlinux.org/task/43704

89c51

Member

Registered: 2012-06-05

Posts: 741

Re: [Solved] Linux-lts 3.14.31 doesn't boot (btrfs)

At least i am not alone

fax

Member

Registered: 2013-01-07

Posts: 16

Re: [Solved] Linux-lts 3.14.31 doesn't boot (btrfs)

Thanks for the pointer to the bug report. I am seeing the same error message with xfs and the LTS kernel. I added more details to the bug report.

Bernd Michaely

Member

Registered: 2015-02-08

Posts: 13

Re: [Solved] Linux-lts 3.14.31 doesn't boot (btrfs)

Still the same problem with 3.14.32-lts,
but 3.18.6 works fine,
so switching to this is another workaround ...

delx

Member

Registered: 2015-02-08

Posts: 13

Re: [Solved] Linux-lts 3.14.31 doesn't boot (btrfs)

I found a work-around to load xfs or btrfs for me.

# modprobe crc32c
# modprobe xfs

I'm using ext4 to boot, so this is good enough for me. But if you need this to work as a root fs then you should be able to add this to MODULES in /etc/mkinitcpio.conf.

89c51

Member

Registered: 2012-06-05

Posts: 741

Re: [Solved] Linux-lts 3.14.31 doesn't boot (btrfs)

3.14.33 seems to have fixed this.