/home mounted as read-only while testing with/in VirtualBox - EXT4-fs error

[LAZA]

I got now twice that my home directory was gone/mounted read-only while testing different VMs in Virtualbox.

I attached the kernel log where the trouble starts with:
EXT4-fs error

.

Xubuntu 12.04.3

Linux xubuntu 3.8.0-34-generic #49~precise1-Ubuntu SMP Wed Nov 13 18:05:00 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

VirtualBox 4.3.6-91406~Ubuntu~precise
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.8.0-34-generic.
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: laza 1791 F.... xfce4-volumed
                      laza 1825 F.... pulseaudio
 /dev/snd/controlC0: laza 1791 F.... xfce4-volumed
                      laza 1825 F.... pulseaudio
CRDA: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden
Card0.Amixer.info:
 Card hw:0 'SB'/'HDA ATI SB at 0xfe024000 irq 16'
   Mixer name : 'Realtek ALC889A'
   Components : 'HDA:10ec0885,1458a102,00100101'
   Controls : 56
   Simple ctrls : 22
Card1.Amixer.info:
 Card hw:1 'Generic'/'HD-Audio Generic at 0xfdefc000 irq 49'
   Mixer name : 'ATI R6xx HDMI'
   Components : 'HDA:1002aa01,00aa0100,00100200'
   Controls : 7
   Simple ctrls : 1
Card1.Amixer.values:
 Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
DistroRelease: Ubuntu 12.04
HibernationDevice: RESUME=UUID=84cc1237-7c21-4e93-bd31-709f34e07c78
InstallationMedia: Xubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130214)
IwConfig:
 vboxnet0 no wireless extensions.

 eth0 no wireless extensions.

 lo no wireless extensions.
MachineType: Gigabyte Technology Co., Ltd. GA-MA790GP-UD4H
MarkForUpload: True
NonfreeKernelModules: fglrx
Package: linux (not installed)
ProcEnviron:
 LANGUAGE=de_DE:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-34-generic root=UUID=13b5f178-5167-47f0-bf90-cf9c0e7c0b08 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.8.0-34.49~precise1-generic 3.8.13.12
RelatedPackageVersions:
 linux-restricted-modules-3.8.0-34-generic N/A
 linux-backports-modules-3.8.0-34-generic N/A
 linux-firmware 1.79.9
RfKill:

Tags: precise
Uname: Linux 3.8.0-34-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo vboxusers
dmi.bios.date: 07/08/2010
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F7c
dmi.board.name: GA-MA790GP-UD4H
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF7c:bd07/08/2010:svnGigabyteTechnologyCo.,Ltd.:pnGA-MA790GP-UD4H:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-MA790GP-UD4H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: GA-MA790GP-UD4H
dmi.sys.vendor: Gigabyte Technology Co., Ltd.

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 1264720

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[LAZA (laza74)]

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[LAZA (laza74)]

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[LAZA (laza74)]

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[LAZA (laza74)]

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[LAZA (laza74)]

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[LAZA (laza74)]

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[LAZA (laza74)]

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[LAZA (laza74)]

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[LAZA (laza74)]

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[LAZA (laza74)]

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[LAZA (laza74)]

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[LAZA (laza74)]

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[penalvch (penalvch)]

LAZA, thank you for reporting this and helping make Ubuntu better. However, VirtualBox 4.3.6-91406~Ubuntu~precise is not a software package provided by the official Ubuntu repositories. Because of this the Ubuntu project can not support or fix your particular bug. Please report this bug to the provider of the software package -> https://www.virtualbox.org/ .

If you are interested in learning more about software repositories and Ubuntu, check https://help.ubuntu.com/community/Repositories

If this is reproducible with the virtualbox package provided in Ubuntu, with no PPAs or other out of scope software, please file a new report via a terminal in your host:
ubuntu-bug linux

Please feel free to report any future bugs you may find.

[LAZA (laza74)]

Christoper, i think, that NOT VirtualBox is the problem/bug.

It seems that the kernel and/or other circumstances trigger the bug.
VirtualBox itself works flawless and as expected.

The massive operations on my LVM2 in combination of ext4 is for me the problem...
I filed a second report here:
#1265363