ext4 slow mounting at boot

[Mike Yates]

While 2.6.31-21 booted just fine (with exactly the same arguments etc)
2.6.32-21 froze every time, usually after starting Busybox but before offering a rescue shell.
It has been cured by moving the rootfs line to the very top of /etc/fstab
(I had previously sorted my many test drives and partitions in physical order, / = /dev/sdb5, ext4)

Among the many messages briefly (another bug) visible at boot, was "slow mounting, try bootdelay".
Others were "failed to mount dev on /root/dev" (also proc and sys) which is perhaps mistyped?

In this event, surely, a total lockup should not occur and constitutes a bug.
Also, the kernel boot messages could be designed to be more informative.
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: SB [HDA ATI SB], device 0: HDA Generic [HDA Generic]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: mike 2908 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'SB'/'HDA ATI SB at 0xfbbf4000 irq 16'
   Mixer name : 'VIA ID 4428'
   Components : 'HDA:11064428,1043838c,00100100'
   Controls : 4
   Simple ctrls : 3
Card1.Amixer.info:
 Card hw:1 'HDMI'/'HDA ATI HDMI at 0xfbde8000 irq 19'
   Mixer name : 'ATI RS690/780 HDMI'
   Components : 'HDA:1002791a,00791a00,00100000'
   Controls : 4
   Simple ctrls : 1
Card1.Amixer.values:
 Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
DistroRelease: Ubuntu 10.04
HibernationDevice: RESUME=UUID=64b3c320-b28b-4e53-9011-b1f5afa6d592
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
MachineType: System manufacturer System Product Name
NonfreeKernelModules: fglrx
Package: linux (not installed)
ProcCmdLine: root=UUID=906aefcd-197c-4d4e-ab8e-67974ae52e0f ro quiet splash
ProcEnviron:
 LANG=en_GB.utf8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
Regression: Yes
RelatedPackageVersions: linux-firmware 1.34
Reproducible: Yes
RfKill:

Tags: lucid kconfig regression-release needs-upstream-testing
Uname: Linux 2.6.32-21-generic x86_64
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 12/18/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0806
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: M4A78-HTPC
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0806:bd12/18/2009:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM4A78-HTPC:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer

[Jeremy Foshee (jeremyfoshee)]

Hi Mike,

Please be sure to confirm this issue exists with the latest development release of Ubuntu. ISO CD images are available from http://cdimage.ubuntu.com/releases/ . If the issue remains, please run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux 573773

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

    [This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

[Mike Yates (fonehelp)]

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[Mike Yates (fonehelp)]

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[Mike Yates (fonehelp)]

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[Mike Yates (fonehelp)]

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[Mike Yates (fonehelp)]

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[Mike Yates (fonehelp)]

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[Mike Yates (fonehelp)]

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[Mike Yates (fonehelp)]

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[Mike Yates (fonehelp)]

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[Mike Yates (fonehelp)]

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[Mike Yates (fonehelp)]

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[Mike Yates (fonehelp)]

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[Mike Yates (fonehelp)]

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[Mike Yates (fonehelp)]

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[Mike Yates (fonehelp)]

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[Mike Yates (fonehelp)]

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[Jeremy Foshee (jeremyfoshee)]

This bug report was marked as Incomplete and has not had any updated comments for quite some time. As a result this bug is being closed. Please reopen if this is still an issue in the current Ubuntu development release http://cdimage.ubuntu.com/daily-live/current/ . Also, please be sure to provide any requested information that may have been missing. To reopen the bug, click on the current status under the Status column and change the status back to "New". Thanks.

[This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]