BTRFS error: could not find root 8
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Confirmed
|
Medium
|
Unassigned |
Bug Description
I have a KVM guest system which was running for some time now (142 days uptime).
Today, I logged in for the first time since months, and got an error message in syslog (and console):
kernel: BTRFS error (device vda2): could not find root 8
The error happened together with my login (in respect to the date of the log entry).
The system was running with kernel 4.4.0-31-generic when the problem occured.
When googling around, I found some similar results, but nowhere is mentioned that this got fixed somehow.
So far, I could not find anything harmful (I did not reboot yet, however).
I updated the kernel now, eventually that helps.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-
ProcVersionSign
Uname: Linux 4.4.0-31-generic x86_64
AlsaDevices:
total 0
crw-rw----+ 1 root audio 116, 1 Dec 20 13:00 seq
crw-rw----+ 1 root audio 116, 33 Dec 20 13:00 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.20.1-0ubuntu2.4
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
Date: Tue Dec 20 13:40:44 2016
HibernationDevice: RESUME=
InstallationDate: Installed on 2016-06-20 (182 days ago)
InstallationMedia: Ubuntu-Server 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.3)
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lsusb:
Bus 001 Device 002: ID 0627:0001 Adomax Technology Co., Ltd
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: QEMU Standard PC (i440FX + PIIX, 1996)
PciMultimedia:
ProcEnviron:
TERM=linux
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 cirrusdrmfb
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.157.6
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/01/2014
dmi.bios.vendor: SeaBIOS
dmi.bios.version: 1.7.5-20140531_
dmi.chassis.type: 1
dmi.chassis.vendor: QEMU
dmi.chassis.
dmi.modalias: dmi:bvnSeaBIOS:
dmi.product.name: Standard PC (i440FX + PIIX, 1996)
dmi.product.
dmi.sys.vendor: QEMU
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version k4.4.0-57-generic.
AplayDevices: Error: [Errno 2] No such file or directory
ApportVersion: 2.20.1-0ubuntu2.4
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/hwC0D2', '/dev/snd/
Card0.Amixer.info: Error: [Errno 2] No such file or directory
Card0.Amixer.
DistroRelease: Ubuntu 16.04
InstallationDate: Installed on 2013-08-21 (1229 days ago)
InstallationMedia: Ubuntu-Server 13.04 "Raring Ringtail" - Release amd64 (20130423.1)
IwConfig:
em1 no wireless extensions.
lo no wireless extensions.
Lsusb:
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Package: linux (not installed)
ProcEnviron:
TERM=screen.
PATH=(custom, no user)
LANG=de_DE.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=
ProcVersionSign
RelatedPackageV
linux-
linux-
linux-firmware 1.157.6
RfKill: Error: [Errno 2] No such file or directory
Tags: xenial
Uname: Linux 4.4.0-57-generic x86_64
UpgradeStatus: Upgraded to xenial on 2016-10-24 (69 days ago)
UserGroups:
_MarkForUpload: True
dmi.bios.date: 03/13/2014
dmi.bios.vendor: Intel Corp.
dmi.bios.version: SWQ6710H.
dmi.board.
dmi.board.name: DQ67OW
dmi.board.vendor: Intel Corporation
dmi.board.version: AAG12528-309
dmi.chassis.type: 3
dmi.modalias: dmi:bvnIntelCor
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