All I had to do to "recover" it was to boot up with a Ubuntu 14.04.2 livecd and mount the drive (I gathered logs looking to debug further). Upon rebooting it seems to be working again.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1446464 Title: System fails to boot stuck on Scanning for btrfs Status in linux package in Ubuntu: Confirmed Bug description: Ubuntu 15.04 with 3.19.0-15-generic. Current status: System fails to finish booting with Scanning for btrfs. If you wait long enough you see: INFO: task exe:208 blocked for more than 120 seconds .... INFO: task btrfs-transacti:230 blocked for more than 120 seconds (message repeats every 2 minutes) Ctrl-alt-delete does work to reboot system at this stage. Booting with upstart still hangs. Recovery mode fails to boot as well Tried options system.debug-shell (from https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1444070) which got me a few more details Story of getting here: Was playing Team Fortress 2 and Internet went down. Trying to get network-manager to reload caused some issues. Eventually decided to reboot. Hung at reboot and ended up powering down by switch. --- ApportVersion: 2.17.2-0ubuntu1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: bryan 1626 F.... pulseaudio /dev/snd/pcmC0D0p: bryan 1626 F...m pulseaudio /dev/snd/controlC0: bryan 1626 F.... pulseaudio CurrentDesktop: Unity DistroRelease: Ubuntu 15.04 InstallationDate: Installed on 2015-01-08 (102 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20150108) MachineType: BIOSTAR Group TA890GXE NonfreeKernelModules: nvidia_uvm nvidia Package: linux (not installed) ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-3.19.0-15-generic root=UUID=1bd032ea-0757-4aee-82d4-bbee08fd0eb8 ro rootflags=subvol=@ quiet splash nomdmonddf nomdmonisw ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3 RelatedPackageVersions: linux-restricted-modules-3.19.0-15-generic N/A linux-backports-modules-3.19.0-15-generic N/A linux-firmware 1.143 RfKill: Tags: vivid Uname: Linux 3.19.0-15-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm autopilot cdrom dip libvirtd lpadmin plugdev sambashare sudo wireshark _MarkForUpload: True dmi.bios.date: 05/30/2011 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 080015 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: TA890GXE dmi.board.vendor: BIOSTAR Group dmi.chassis.asset.tag: None dmi.chassis.type: 3 dmi.chassis.vendor: BIOSTAR Group dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr080015:bd05/30/2011:svnBIOSTARGroup:pnTA890GXE:pvr:rvnBIOSTARGroup:rnTA890GXE:rvr:cvnBIOSTARGroup:ct3:cvr: dmi.product.name: TA890GXE dmi.sys.vendor: BIOSTAR Group To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1446464/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp