It slowly got worse until my whole system wouldn't start. Finally I ran btrfs check --repair /dev/sdx1 from a usb boot drive and it said: "cache and super generation don't match, space cache will be invalidated"
After that it mounted right away. However I will proceed with the newer kernel as we don't know what caused the corruption in the first place and why it didn't resolve this automagically. On Thu, May 14, 2015 at 11:01 AM Alberto Salvia Novella < es204904...@gmail.com> wrote: > ** Changed in: linux (Ubuntu) > Importance: Medium => High > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1454903 > > Title: > Btrfs Fails to Mount Drive - btrfs-transaction blocked for more than > 120 seconds. > > Status in linux package in Ubuntu: > Incomplete > > Bug description: > Call Trace: > kernel: ffff880408609800 ffff8803e9cba200 ffff8803d06f7398 > ffff8803bc89fe00 > kernel: 0000000000014200 ffff88040ce9f5c0 ffff880407f9d850 > ffff8803bc89fdd8 > kernel: ffff8803bc89fdc8 ffff880407f9d850 0000000000014200 > ffff8803bc89ffd8 > kernel: btrfs-transacti D ffff8803bc89fdc8 0 4187 2 0x00000000 > kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this > message. > kernel: Not tainted 3.19.0-16-generic #16-Ubuntu > kernel: INFO: task btrfs-transacti:4187 blocked for more than 120 > seconds. > kernel: [<ffffffff817c934d>] system_call_fastpath+0x16/0x1b > kernel: [<ffffffff812175db>] SyS_mount+0x8b/0xd0 > kernel: [<ffffffff812169a4>] do_mount+0x204/0xb20 > kernel: [<ffffffff81213b4b>] vfs_kern_mount+0x6b/0x120 > kernel: [<ffffffff8119b805>] ? __alloc_percpu+0x15/0x20 > kernel: [<ffffffff811f7428>] mount_fs+0x38/0x1c0 > kernel: [<ffffffffc0333b00>] btrfs_mount+0x850/0x920 [btrfs] > kernel: [<ffffffffc035db23>] open_ctree+0x1813/0x2090 [btrfs] > kernel: [<ffffffffc039f9c0>] ? replay_one_extent+0x6b0/0x6b0 [btrfs] > kernel: [<ffffffffc03a2214>] btrfs_recover_log_trees+0x1d4/0x470 [btrfs] > kernel: [<ffffffffc039abbb>] walk_log_tree+0xbb/0x1a0 [btrfs] > kernel: [<ffffffffc039a679>] walk_down_log_tree+0x1d9/0x420 [btrfs] > kernel: [<ffffffffc0382f34>] ? alloc_extent_buffer+0x34/0x350 [btrfs] > kernel: [<ffffffffc039b04e>] insert_orphan_item+0x5e/0x90 [btrfs] > > ProblemType: Bug > DistroRelease: Ubuntu 15.04 > Package: linux-image-3.19.0-16-generic 3.19.0-16.16 > ProcVersionSignature: Ubuntu 3.19.0-16.16-generic 3.19.3 > Uname: Linux 3.19.0-16-generic x86_64 > ApportVersion: 2.17.2-0ubuntu1 > Architecture: amd64 > AudioDevicesInUse: > USER PID ACCESS COMMAND > /dev/snd/controlC0: jdfalk 3444 F.... pulseaudio > Date: Wed May 13 19:03:10 2015 > HibernationDevice: RESUME=/dev/mapper/sda5_crypt > InstallationDate: Installed on 2015-05-10 (4 days ago) > InstallationMedia: Ubuntu-Server 15.04 "Vivid Vervet" - Release amd64 > (20150422) > MachineType: Gigabyte Technology Co., Ltd. To be filled by O.E.M. > ProcEnviron: > TERM=xterm-256color > PATH=(custom, no user) > LANG=en_US.UTF-8 > SHELL=/bin/bash > ProcFB: 0 inteldrmfb > ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-16-generic.efi.signed > root=UUID=51a981ad-aeb0-4bd7-91c6-2d493155c812 ro rootflags=subvol=@ > crashkernel=384M-:128M > PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No > PulseAudio daemon running, or not running as session daemon. > RelatedPackageVersions: > linux-restricted-modules-3.19.0-16-generic N/A > linux-backports-modules-3.19.0-16-generic N/A > linux-firmware 1.143 > RfKill: > > SourcePackage: linux > UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' > UpgradeStatus: No upgrade log present (probably fresh install) > dmi.bios.date: 01/06/2014 > dmi.bios.vendor: American Megatrends Inc. > dmi.bios.version: F18i > dmi.board.asset.tag: To be filled by O.E.M. > dmi.board.name: Z77X-D3H > dmi.board.vendor: Gigabyte Technology Co., Ltd. > dmi.board.version: x.x > dmi.chassis.asset.tag: To Be Filled By O.E.M. > dmi.chassis.type: 3 > dmi.chassis.vendor: Gigabyte Technology Co., Ltd. > dmi.chassis.version: To Be Filled By O.E.M. > dmi.modalias: > dmi:bvnAmericanMegatrendsInc.:bvrF18i:bd01/06/2014:svnGigabyteTechnologyCo.,Ltd.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnZ77X-D3H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.: > dmi.product.name: To be filled by O.E.M. > dmi.product.version: To be filled by O.E.M. > dmi.sys.vendor: Gigabyte Technology Co., Ltd. > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1454903/+subscriptions > -- 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/1454903 Title: Btrfs Fails to Mount Drive - btrfs-transaction blocked for more than 120 seconds. Status in linux package in Ubuntu: Incomplete Bug description: Call Trace: kernel: ffff880408609800 ffff8803e9cba200 ffff8803d06f7398 ffff8803bc89fe00 kernel: 0000000000014200 ffff88040ce9f5c0 ffff880407f9d850 ffff8803bc89fdd8 kernel: ffff8803bc89fdc8 ffff880407f9d850 0000000000014200 ffff8803bc89ffd8 kernel: btrfs-transacti D ffff8803bc89fdc8 0 4187 2 0x00000000 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kernel: Not tainted 3.19.0-16-generic #16-Ubuntu kernel: INFO: task btrfs-transacti:4187 blocked for more than 120 seconds. kernel: [<ffffffff817c934d>] system_call_fastpath+0x16/0x1b kernel: [<ffffffff812175db>] SyS_mount+0x8b/0xd0 kernel: [<ffffffff812169a4>] do_mount+0x204/0xb20 kernel: [<ffffffff81213b4b>] vfs_kern_mount+0x6b/0x120 kernel: [<ffffffff8119b805>] ? __alloc_percpu+0x15/0x20 kernel: [<ffffffff811f7428>] mount_fs+0x38/0x1c0 kernel: [<ffffffffc0333b00>] btrfs_mount+0x850/0x920 [btrfs] kernel: [<ffffffffc035db23>] open_ctree+0x1813/0x2090 [btrfs] kernel: [<ffffffffc039f9c0>] ? replay_one_extent+0x6b0/0x6b0 [btrfs] kernel: [<ffffffffc03a2214>] btrfs_recover_log_trees+0x1d4/0x470 [btrfs] kernel: [<ffffffffc039abbb>] walk_log_tree+0xbb/0x1a0 [btrfs] kernel: [<ffffffffc039a679>] walk_down_log_tree+0x1d9/0x420 [btrfs] kernel: [<ffffffffc0382f34>] ? alloc_extent_buffer+0x34/0x350 [btrfs] kernel: [<ffffffffc039b04e>] insert_orphan_item+0x5e/0x90 [btrfs] ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: linux-image-3.19.0-16-generic 3.19.0-16.16 ProcVersionSignature: Ubuntu 3.19.0-16.16-generic 3.19.3 Uname: Linux 3.19.0-16-generic x86_64 ApportVersion: 2.17.2-0ubuntu1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: jdfalk 3444 F.... pulseaudio Date: Wed May 13 19:03:10 2015 HibernationDevice: RESUME=/dev/mapper/sda5_crypt InstallationDate: Installed on 2015-05-10 (4 days ago) InstallationMedia: Ubuntu-Server 15.04 "Vivid Vervet" - Release amd64 (20150422) MachineType: Gigabyte Technology Co., Ltd. To be filled by O.E.M. ProcEnviron: TERM=xterm-256color PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-16-generic.efi.signed root=UUID=51a981ad-aeb0-4bd7-91c6-2d493155c812 ro rootflags=subvol=@ crashkernel=384M-:128M PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-3.19.0-16-generic N/A linux-backports-modules-3.19.0-16-generic N/A linux-firmware 1.143 RfKill: SourcePackage: linux UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 01/06/2014 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: F18i dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: Z77X-D3H dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF18i:bd01/06/2014:svnGigabyteTechnologyCo.,Ltd.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnZ77X-D3H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: To be filled by O.E.M. dmi.product.version: To be filled by O.E.M. dmi.sys.vendor: Gigabyte Technology Co., Ltd. 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