[Bug 607560] [NEW] jbd2 writing block every 5 seconds, preventing disk spin-down and making noise

[rCX]

Public bug reported:

jbd2 writes blocks to the hard disk every 5 seconds.  This makes an
annoying click/tick noise and prevents the disk from spinning down to
conserve power.  jbd2 appears in logs as several entries like...

 Jul 19 21:35:45 edge kernel: [ 3312.913759] jbd2/sda5-8(350): WRITE
block 42280704 on sda5

... and can be observed using iotop. Since the noise only occurs in
Ubuntu and not in Windows 7 it is probably a software problem.  The
excessive writes may reduce the disk's lifespan.

Other info...
* OS: Ubuntu 10.04 LTS
* Disk fomat: ext4
* Kernel: 2.6.32-23-generic-pae

Threads covering this problem
* http://ubuntuforums.org/showthread.php?t=1489637
* https://bbs.archlinux.org/viewtopic.php?pid=692073

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-23-generic-pae 2.6.32-23.37
Regression: No
Reproducible: No
ProcVersionSignature: Ubuntu 2.6.32-23.37-generic-pae 2.6.32.15+drm33.5
Uname: Linux 2.6.32-23-generic-pae i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  rcx      2456 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf0800000 irq 22'
   Mixer name	: 'Intel G45 DEVIBX'
   Components	: 'HDA:10ec0269,17aa21bc,00100004 HDA:80862804,80860101,00100000'
   Controls      : 16
   Simple ctrls  : 8
Date: Mon Jul 19 23:24:03 2010
Frequency: I don't know.
HibernationDevice: RESUME=UUID=ae276af8-b805-466a-a688-8d175cd3f2d7
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
MachineType: LENOVO 05782AU
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-23-generic-pae root=UUID=01d19f79-8c81-4da6-949d-db8f4d85b84a ro quiet splash
ProcEnviron:
 SHELL=/bin/bash
 LANG=en_US.utf8
RelatedPackageVersions: linux-firmware 1.34.1
SourcePackage: linux
dmi.bios.date: 06/11/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 80ET37WW (1.14 )
dmi.board.name: 05782AU
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr80ET37WW(1.14):bd06/11/2010:svnLENOVO:pn05782AU:pvrThinkPadEdge:rvnLENOVO:rn05782AU:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 05782AU
dmi.product.version: ThinkPad Edge
dmi.sys.vendor: LENOVO

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug filesystem i386 lucid needs-upstream-testing

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jbd2 writing block every 5 seconds, preventing disk spin-down and making noise
https://bugs.launchpad.net/bugs/607560
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