Red Hat Bugzilla – Bug 995609
Kernel 3.10.5-201 fails to boot on system w/ btrfs root filesystem
Last modified: 2013-09-23 16:33:28 EDT
Description of problem:
Upon rebooting after updating to kernel 3.10.5-201 and rebooting, system dropped into emergency shell. Reviewing logs revealed that mount was complaining that 'btrfs' was an unknown filesystem.
Version-Release number of selected component (if applicable):
Unknown. I only have one box running Fedora 19. When I get home I plan on spinning up a Fedora 19 VM to see if I can replicate.
Steps to Reproduce:
1. Install kernel-3.10.5-201.fc19.x86_64 package
The system aborts to emergency shell. The system logs show the following:
Aug 09 12:35:59 localhost.localdomain mount: mount: unknown filesystem time 'btrfs'
Aug 09 12:35:59 localhost.localdomain systemd: sysroot.mount mount process exited, code=exited status=32
Aug 09 12:35:59 localhost.localdomain systemd: Failed to mount /sysroot.
Aug 09 12:35:59 localhost.localdomain systemd: Dependency failed for Initrd Root File System.
Aug 09 12:35:59 localhost.localdomain systemd: Dependency failed for Reload Configuration from the Real Root.
Boot to login screen.
Please look in /boot/ and ensure that the initramfs is of similar size to the rest of them. Also, make sure the btrfs.ko module is in the initramfs for this kernel. You can do this by running:
sudo lsinitrd /boot/initramfs-3.10.5-201.fc19.x86_64.img | grep btrfs.ko
*********** MASS BUG UPDATE **************
We apologize for the inconvenience. There is a large number of bugs to go through and several of them have gone stale. Due to this, we are doing a mass bug update across all of the Fedora 19 kernel bugs.
Fedora 19 has now been rebased to 3.11.1-200.fc19. Please test this kernel update and let us know if you issue has been resolved or if it is still present with the newer kernel.
If you experience different issues, please open a new bug report for those.
If this can be reproduced on a recent kernel please file a bugzilla at bugzilla.kernel.org and set the component to btrfs.