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Old 05-29-2010, 03:20 PM
Christoph Egger
 
Default Bug#583686: Kernel exceptions in ext3/journal subsystem

Package: linux-2.6
Version: 2.6.32-13
Severity: important

Hi!

Running sbuild with lvm snapshots seems to hang and the kernel
is spitting out error messages. Seems it is having some trouble! Unfortunately
I'm no kernel expert so if you need something please ask.

Regards

Christoph

-- Package-specific info:
** Version:
Linux version 2.6.32-5-powerpc (Debian 2.6.32-13) (maks@debian.org) (gcc version 4.3.4 (Debian 4.3.4-10) ) #1 Tue May 18 19:39:04 UTC 2010

** Command line:
root=/dev/mapper/michelangelo-root ro

** Tainted: W (512)
* Taint on warning.

** Kernel log:
[ 601.538740] debconf-set-s D 0fd51810 0 1424 1414 0x00000000
[ 601.544871] Call Trace:
[ 601.550905] [d66dfcb0] [d7690a3c] 0xd7690a3c (unreliable)
[ 601.557095] [d66dfd70] [c00097d4] __switch_to+0x78/0x90
[ 601.563304] [d66dfd80] [c03754ac] schedule+0x468/0x4b4
[ 601.569504] [d66dfdd0] [c0375560] io_schedule+0x68/0xc4
[ 601.575688] [d66dfdf0] [c00bf4d4] sync_page+0x5c/0x70
[ 601.581830] [d66dfe00] [c0375be8] __wait_on_bit+0x68/0xc0
[ 601.587926] [d66dfe20] [c00bf79c] wait_on_page_bit+0xc4/0xd8
[ 601.593984] [d66dfe60] [c00c0208] wait_on_page_writeback_range+0x6c/0x148
[ 601.600070] [d66dfee0] [c00c0444] filemap_write_and_wait_range+0x70/0x94
[ 601.606163] [d66dff00] [c0116954] vfs_fsync_range+0x54/0xb4
[ 601.612175] [d66dff20] [c0116a74] do_fsync+0x30/0x54
[ 601.618068] [d66dff40] [c00153dc] ret_from_syscall+0x0/0x40
[ 601.623887] --- Exception: c01 at 0xfd51810
[ 601.623893] LR = 0xfae42b8
[ 721.633748] INFO: task kjournald:1319 blocked for more than 120 seconds.
[ 721.639677] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 721.645683] kjournald D 00000000 0 1319 2 0x00000000
[ 721.651777] Call Trace:
[ 721.657756] [d6ab1d00] [d66d8b10] 0xd66d8b10 (unreliable)
[ 721.663895] [d6ab1dc0] [c00097d4] __switch_to+0x78/0x90
[ 721.670008] [d6ab1dd0] [c03754ac] schedule+0x468/0x4b4
[ 721.676097] [d6ab1e20] [c0375560] io_schedule+0x68/0xc4
[ 721.682182] [d6ab1e40] [c0119830] sync_buffer+0x50/0x64
[ 721.688201] [d6ab1e50] [c0375be8] __wait_on_bit+0x68/0xc0
[ 721.694233] [d6ab1e70] [c0375d04] out_of_line_wait_on_bit+0xc4/0xd8
[ 721.700300] [d6ab1ec0] [c011971c] __wait_on_buffer+0x2c/0x3c
[ 721.706348] [d6ab1ed0] [da6763ac] journal_commit_transaction+0x484/0xf20 [jbd]
[ 721.712499] [d6ab1f70] [da679cc0] kjournald+0xb4/0x1d4 [jbd]
[ 721.718585] [d6ab1fc0] [c00625fc] kthread+0x74/0x78
[ 721.724549] [d6ab1ff0] [c001512c] kernel_thread+0x4c/0x68
[ 721.730409] INFO: task debconf-set-sel:1424 blocked for more than 120 seconds.
[ 721.736381] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 721.742437] debconf-set-s D 0fd51810 0 1424 1414 0x00000000
[ 721.748555] Call Trace:
[ 721.754572] [d66dfcb0] [d7690a3c] 0xd7690a3c (unreliable)
[ 721.760740] [d66dfd70] [c00097d4] __switch_to+0x78/0x90
[ 721.766936] [d66dfd80] [c03754ac] schedule+0x468/0x4b4
[ 721.773121] [d66dfdd0] [c0375560] io_schedule+0x68/0xc4
[ 721.779298] [d66dfdf0] [c00bf4d4] sync_page+0x5c/0x70
[ 721.785431] [d66dfe00] [c0375be8] __wait_on_bit+0x68/0xc0
[ 721.791515] [d66dfe20] [c00bf79c] wait_on_page_bit+0xc4/0xd8
[ 721.797565] [d66dfe60] [c00c0208] wait_on_page_writeback_range+0x6c/0x148
[ 721.803652] [d66dfee0] [c00c0444] filemap_write_and_wait_range+0x70/0x94
[ 721.809732] [d66dff00] [c0116954] vfs_fsync_range+0x54/0xb4
[ 721.815730] [d66dff20] [c0116a74] do_fsync+0x30/0x54
[ 721.821610] [d66dff40] [c00153dc] ret_from_syscall+0x0/0x40
[ 721.827429] --- Exception: c01 at 0xfd51810
[ 721.827434] LR = 0xfae42b8
[ 841.837754] INFO: task kjournald:1319 blocked for more than 120 seconds.
[ 841.843703] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 841.849694] kjournald D 00000000 0 1319 2 0x00000000
[ 841.855778] Call Trace:
[ 841.861751] [d6ab1d00] [d66d8b10] 0xd66d8b10 (unreliable)
[ 841.867862] [d6ab1dc0] [c00097d4] __switch_to+0x78/0x90
[ 841.873959] [d6ab1dd0] [c03754ac] schedule+0x468/0x4b4
[ 841.880038] [d6ab1e20] [c0375560] io_schedule+0x68/0xc4
[ 841.886115] [d6ab1e40] [c0119830] sync_buffer+0x50/0x64
[ 841.892125] [d6ab1e50] [c0375be8] __wait_on_bit+0x68/0xc0
[ 841.898143] [d6ab1e70] [c0375d04] out_of_line_wait_on_bit+0xc4/0xd8
[ 841.904196] [d6ab1ec0] [c011971c] __wait_on_buffer+0x2c/0x3c
[ 841.910228] [d6ab1ed0] [da6763ac] journal_commit_transaction+0x484/0xf20 [jbd]
[ 841.916368] [d6ab1f70] [da679cc0] kjournald+0xb4/0x1d4 [jbd]
[ 841.922441] [d6ab1fc0] [c00625fc] kthread+0x74/0x78
[ 841.928394] [d6ab1ff0] [c001512c] kernel_thread+0x4c/0x68
[ 841.934247] INFO: task debconf-set-sel:1424 blocked for more than 120 seconds.
[ 841.940208] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 841.946252] debconf-set-s D 0fd51810 0 1424 1414 0x00000000
[ 841.952351] Call Trace:
[ 841.958349] [d66dfcb0] [d7690a3c] 0xd7690a3c (unreliable)
[ 841.964502] [d66dfd70] [c00097d4] __switch_to+0x78/0x90
[ 841.970676] [d66dfd80] [c03754ac] schedule+0x468/0x4b4
[ 841.976844] [d66dfdd0] [c0375560] io_schedule+0x68/0xc4
[ 841.983002] [d66dfdf0] [c00bf4d4] sync_page+0x5c/0x70
[ 841.989114] [d66dfe00] [c0375be8] __wait_on_bit+0x68/0xc0
[ 841.995182] [d66dfe20] [c00bf79c] wait_on_page_bit+0xc4/0xd8
[ 842.001211] [d66dfe60] [c00c0208] wait_on_page_writeback_range+0x6c/0x148
[ 842.007280] [d66dfee0] [c00c0444] filemap_write_and_wait_range+0x70/0x94
[ 842.013348] [d66dff00] [c0116954] vfs_fsync_range+0x54/0xb4
[ 842.019341] [d66dff20] [c0116a74] do_fsync+0x30/0x54
[ 842.025211] [d66dff40] [c00153dc] ret_from_syscall+0x0/0x40
[ 842.031006] --- Exception: c01 at 0xfd51810
[ 842.031012] LR = 0xfae42b8
[ 962.041779] INFO: task kjournald:1319 blocked for more than 120 seconds.
[ 962.047736] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 962.053722] kjournald D 00000000 0 1319 2 0x00000000
[ 962.059777] Call Trace:
[ 962.065733] [d6ab1d00] [d66d8b10] 0xd66d8b10 (unreliable)
[ 962.071825] [d6ab1dc0] [c00097d4] __switch_to+0x78/0x90
[ 962.077903] [d6ab1dd0] [c03754ac] schedule+0x468/0x4b4
[ 962.083966] [d6ab1e20] [c0375560] io_schedule+0x68/0xc4
[ 962.090025] [d6ab1e40] [c0119830] sync_buffer+0x50/0x64
[ 962.096022] [d6ab1e50] [c0375be8] __wait_on_bit+0x68/0xc0
[ 962.102027] [d6ab1e70] [c0375d04] out_of_line_wait_on_bit+0xc4/0xd8
[ 962.108070] [d6ab1ec0] [c011971c] __wait_on_buffer+0x2c/0x3c
[ 962.114092] [d6ab1ed0] [da6763ac] journal_commit_transaction+0x484/0xf20 [jbd]
[ 962.120282] [d6ab1f70] [da679cc0] kjournald+0xb4/0x1d4 [jbd]
[ 962.126356] [d6ab1fc0] [c00625fc] kthread+0x74/0x78
[ 962.132297] [d6ab1ff0] [c001512c] kernel_thread+0x4c/0x68

** Model information
revision : 2.9 (pvr 000c 0209)
platform : PowerMac
model : PowerMac3,4
machine : PowerMac3,4
motherboard : PowerMac3,4 MacRISC2 MacRISC Power Macintosh

** Loaded modules:
Module Size Used by
dm_snapshot 26076 3
ext2 66565 1
loop 15921 0
firewire_sbp2 16011 0
scsi_mod 126838 1 firewire_sbp2
snd_aoa_codec_tas 13079 2
snd_aoa_fabric_layout 12091 0
snd_aoa 15580 2 snd_aoa_codec_tas,snd_aoa_fabric_layout
snd_aoa_i2sbus 20629 1
snd_pcm 65001 1 snd_aoa_i2sbus
snd_timer 20956 1 snd_pcm
snd_page_alloc 9045 1 snd_pcm
snd 52643 6 snd_aoa_codec_tas,snd_aoa_fabric_layout,snd_aoa,sn d_aoa_i2sbus,snd_pcm,snd_timer
soundcore 8003 1 snd
snd_aoa_soundbus 6669 2 snd_aoa_fabric_layout,snd_aoa_i2sbus
evdev 11760 0
ext3 124692 2
jbd 40847 1 ext3
mbcache 8286 2 ext2,ext3
dm_mod 63539 18 dm_snapshot
usbhid 39920 0
hid 68161 1 usbhid
ohci_hcd 35272 0
firewire_ohci 25992 0
ehci_hcd 42750 0
ide_cd_mod 28553 0
sungem 30865 0
firewire_core 44106 2 firewire_sbp2,firewire_ohci
cdrom 36699 1 ide_cd_mod
crc_itu_t 4495 1 firewire_core
sungem_phy 12982 1 sungem
usbcore 131800 4 usbhid,ohci_hcd,ehci_hcd
nls_base 8693 1 usbcore
i2c_powermac 6651 0

** PCI devices:
0000:00:0b.0 Host bridge [0600]: Apple Computer Inc. UniNorth 1.5 AGP [106b:002d]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx-
Latency: 16, Cache Line Size: 32 bytes
Capabilities: <access denied>
Kernel driver in use: agpgart-uninorth

0000:00:10.0 VGA compatible controller [0300]: ATI Technologies Inc Rage 128 PF/PRO AGP 4x TMDS [1002:5046] (prog-if 00 [VGA controller])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping+ SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 255 (2000ns min), Cache Line Size: 32 bytes
Interrupt: pin A routed to IRQ 48
Region 0: Memory at 94000000 (32-bit, prefetchable) [size=64M]
Region 1: I/O ports at 0400 [size=256]
Region 2: Memory at 90000000 (32-bit, non-prefetchable) [size=16K]
Expansion ROM at 90020000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: aty128fb

0001:10:0b.0 Host bridge [0600]: Apple Computer Inc. UniNorth 1.5 PCI [106b:002e]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx-
Latency: 16, Cache Line Size: 32 bytes

0001:10:17.0 Class [ff00]: Apple Computer Inc. KeyLargo Mac I/O [106b:0022] (rev 03)
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 16, Cache Line Size: 32 bytes
Region 0: Memory at 80000000 (32-bit, non-prefetchable) [size=512K]
Kernel driver in use: macio

0001:10:18.0 USB Controller [0c03]: Apple Computer Inc. KeyLargo USB [106b:0019] (prog-if 10 [OHCI])
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 16 (750ns min, 21500ns max)
Interrupt: pin A routed to IRQ 27
Region 0: Memory at 80081000 (32-bit, non-prefetchable) [size=4K]
Kernel driver in use: ohci_hcd

0001:10:19.0 USB Controller [0c03]: Apple Computer Inc. KeyLargo USB [106b:0019] (prog-if 10 [OHCI])
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 16 (750ns min, 21500ns max)
Interrupt: pin A routed to IRQ 28
Region 0: Memory at 80080000 (32-bit, non-prefetchable) [size=4K]
Kernel driver in use: ohci_hcd

0002:20:0b.0 Host bridge [0600]: Apple Computer Inc. UniNorth 1.5 Internal PCI [106b:002f]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx-
Latency: 16, Cache Line Size: 32 bytes

0002:20:0e.0 FireWire (IEEE 1394) [0c00]: Agere Systems FW322/323 [11c1:5811] (prog-if 10 [OHCI])
Subsystem: Agere Systems FW322/323 [11c1:5811]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 16 (3000ns min, 6000ns max), Cache Line Size: 32 bytes
Interrupt: pin A routed to IRQ 40
Region 0: Memory at f5000000 (32-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: firewire_ohci

0002:20:0f.0 Ethernet controller [0200]: Apple Computer Inc. UniNorth GMAC (Sun GEM) [106b:0021] (rev 01)
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=slow >TAbort- <TAbort- <MAbort- >SERR- <PERR+ INTx-
Latency: 16 (16000ns min, 16000ns max), Cache Line Size: 32 bytes
Interrupt: pin A routed to IRQ 41
Region 0: Memory at f5200000 (32-bit, non-prefetchable) [size=2M]
Expansion ROM at f5100000 [disabled] [size=1M]
Kernel driver in use: gem


** USB devices:
Bus 002 Device 002: ID 04b3:3025 IBM Corp.
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub


-- System Information:
Debian Release: squeeze/sid
APT prefers unstable
APT policy: (500, 'unstable'), (500, 'testing')
Architecture: powerpc (ppc)

Kernel: Linux 2.6.32-5-powerpc
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages linux-image-2.6.32-5-powerpc depends on:
ii debconf [debconf-2.0] 1.5.32 Debian configuration management sy
ii initramfs-tools [linux-initr 0.94.4 tools for generating an initramfs
ii libc6 2.10.2-9 Embedded GNU C Library: Shared lib
ii linux-base 2.6.32-13 Linux image base package
ii module-init-tools 3.12~pre2-3 tools for managing Linux kernel mo

Versions of packages linux-image-2.6.32-5-powerpc recommends:
ii firmware-linux-free 2.6.32-13 Binary firmware for various driver

Versions of packages linux-image-2.6.32-5-powerpc suggests:
pn linux-doc-2.6.32 <none> (no description available)
pn mkvmlinuz <none> (no description available)

Versions of packages linux-image-2.6.32-5-powerpc is related to:
pn firmware-bnx2 <none> (no description available)
pn firmware-bnx2x <none> (no description available)
pn firmware-ipw2x00 <none> (no description available)
pn firmware-ivtv <none> (no description available)
pn firmware-iwlwifi <none> (no description available)
pn firmware-linux <none> (no description available)
pn firmware-linux-nonfree <none> (no description available)
pn firmware-qlogic <none> (no description available)
pn firmware-ralink <none> (no description available)
pn xen-hypervisor <none> (no description available)

-- debconf information:
linux-image-2.6.32-5-powerpc/postinst/bootloader-error-2.6.32-5-powerpc:
shared/kernel-image/really-run-bootloader: true
linux-image-2.6.32-5-powerpc/prerm/would-invalidate-boot-loader-2.6.32-5-powerpc: true
linux-image-2.6.32-5-powerpc/prerm/removing-running-kernel-2.6.32-5-powerpc: true
linux-image-2.6.32-5-powerpc/postinst/bootloader-test-error-2.6.32-5-powerpc:
linux-image-2.6.32-5-powerpc/postinst/depmod-error-initrd-2.6.32-5-powerpc: false
linux-image-2.6.32-5-powerpc/postinst/missing-firmware-2.6.32-5-powerpc:



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Archive: 20100529152022.GA12826@michelangelo.ipv6.sieglitzh of.net">http://lists.debian.org/20100529152022.GA12826@michelangelo.ipv6.sieglitzh of.net
 
Old 05-31-2010, 04:25 PM
Ben Hutchings
 
Default Bug#583686: Kernel exceptions in ext3/journal subsystem

On Sat, 2010-05-29 at 17:20 +0200, Christoph Egger wrote:
> Package: linux-2.6
> Version: 2.6.32-13
> Severity: important
>
> Hi!
>
> Running sbuild with lvm snapshots seems to hang and the kernel
> is spitting out error messages. Seems it is having some trouble! Unfortunately
> I'm no kernel expert so if you need something please ask.
[...]

This may be related to the infamous sync/umount bug
<https://bugzilla.kernel.org/show_bug.cgi?id=15906>.

Does this happen when sbuild unmounts a temporary filesystem?

Ben.

--
Ben Hutchings
Once a job is fouled up, anything done to improve it makes it worse.
 
Old 06-02-2010, 12:02 PM
Christoph Egger
 
Default Bug#583686: Kernel exceptions in ext3/journal subsystem

Ben Hutchings <ben@decadent.org.uk> writes:
> On Sat, 2010-05-29 at 17:20 +0200, Christoph Egger wrote:
>> Running sbuild with lvm snapshots seems to hang and the kernel
>> is spitting out error messages. Seems it is having some trouble! Unfortunately
>> I'm no kernel expert so if you need something please ask.
> [...]
>
> This may be related to the infamous sync/umount bug
> <https://bugzilla.kernel.org/show_bug.cgi?id=15906>.

This bug report always talks about ext4, which isn't used here. So
I'm not quite sure it's related. Also running the touch / umount snipet
From the bug report runs in acceptable time and doesn't spit out loads
of kernel traces as debootstrap / sbuild / et all does

> Does this happen when sbuild unmounts a temporary filesystem?

Last time it died in the middle of an apt-cache call which doesn't
(as far as I understand it) do any (u)mounts.

Regards

Christoph
 
Old 06-02-2010, 12:38 PM
Ben Hutchings
 
Default Bug#583686: Kernel exceptions in ext3/journal subsystem

On Wed, 2010-06-02 at 14:02 +0200, Christoph Egger wrote:
> Ben Hutchings <ben@decadent.org.uk> writes:
> > On Sat, 2010-05-29 at 17:20 +0200, Christoph Egger wrote:
> >> Running sbuild with lvm snapshots seems to hang and the kernel
> >> is spitting out error messages. Seems it is having some trouble! Unfortunately
> >> I'm no kernel expert so if you need something please ask.
> > [...]
> >
> > This may be related to the infamous sync/umount bug
> > <https://bugzilla.kernel.org/show_bug.cgi?id=15906>.
>
> This bug report always talks about ext4, which isn't used here.

It is not specific to ext4.

> So
> I'm not quite sure it's related. Also running the touch / umount snipet
> From the bug report runs in acceptable time and doesn't spit out loads
> of kernel traces as debootstrap / sbuild / et all does
[...]

OK, please make a separate bug report at <https://bugzilla.kernel.org/>
under product 'File System', component 'ext3'. Let us know the bug
number or URL so we can track it.

Ben.

--
Ben Hutchings
Once a job is fouled up, anything done to improve it makes it worse.
 
Old 03-19-2012, 05:12 AM
Jonathan Nieder
 
Default Bug#583686: Kernel exceptions in ext3/journal subsystem

Hi Christoph,

Ben Hutchings wrote:
> On Wed, 2010-06-02 at 14:02 +0200, Christoph Egger wrote:
>>> On Sat, 2010-05-29 at 17:20 +0200, Christoph Egger wrote:

>>>> Running sbuild with lvm snapshots seems to hang and the kernel
>>>> is spitting out error messages. Seems it is having some trouble! Unfortunately
>>>> I'm no kernel expert so if you need something please ask.
[...]
>> So
>> I'm not quite sure it's related. Also running the touch / umount snipet
>> From the bug report runs in acceptable time and doesn't spit out loads
>> of kernel traces as debootstrap / sbuild / et all does
> [...]
>
> OK, please make a separate bug report at <https://bugzilla.kernel.org/>
> under product 'File System', component 'ext3'. Let us know the bug
> number or URL so we can track it.

I'm in suspense now. Did you report this upstream?

If not:

- do you still have access to this hardware, and if so are you
still interested in pursuing this? ("No" is fine, but please do
let us know so we can act accordingly.)

- how do current squeeze kernels behave?

- how about current 3.x.y kernels from wheezy or sid? (The only
packages from outside squeeze that should be needed in order to
test this on squeeze are the kernel image itself, linux-base,
and initramfs-tools.)

- if squeeze kernels do not reproduce the problem, we can declare
victory. Yay!

if squeeze kernels reproduce the problem but 3.x.y does not,
it would be useful to try a few kernels halfway between to narrow
down the range to search for a fix. Historic precompiled kernels
can be found at <http://snapshot.debian.org/package/linux-2.6>.

if 3.x.y kernels reproduce the problem, please report this upstream
and let us know the bug number so we can track it.

Hope that helps and sorry for the trouble,
Jonathan



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