File system errors - Ext4 ?

David Stephens linuxrootuser at
Thu Nov 5 18:08:35 GMT 2009

Thankfully I haven't encountered this problem, but I haven't tried saving
any large files. After following these posts I am planning to revert back to

On Thu, Nov 5, 2009 at 1:02 PM, Tommy Hjalmarsson <tommy.h at>wrote:

>  Robin Darlington wrote:
> Ok I have had a quick look at that bug and I have a few questions.
> First of all I am running 2.6.31-rt kernel and the bug is said to affect 2.6.32-rc1
> and above is it still possible that it may be the same bug?
>  How can I fix it? Should I reinstall with ext3 filesystem? will ext3
> perform as well as ext4 for Audio  ?
>  Thanks,
> Robin
> 2009/11/5 Tommy Hjalmarsson <tommy.h at>
>>  Robin Darlington wrote:
>> Hi everyone,
>> I am running a fresh install of Ubuntu Studio Karmic and I have now
>> experienced filesystem errors twice.
>> The first time I put my computer to sleep and upon waking up it would not
>> accept my password (not due to keyboard layout : i checked by typing it in
>> username field) so I restarted and then  I had to run fsck manually to fix
>> the Filesystem errors. The seccond time I was trying to install some
>> software in the terminal via sudo apt-get and the sudo was just getting
>> ignored. So i restarted and once again had to run fsck in order for my
>> system to boot. I installed with a ext4 filesystem.
>>  Does anyone have any ideas what is going on here? and how to fix it?
>> Has this happened to anybody else? Could it be to do with the fact that I
>> am using to tweak ubuntu <>  to install third
>> party software (Opera, VirtualBox, Code Blocks etc.) ?
>>  Thank you for your time,
>> Robin
>>  Here is a bugg comment:
>> *Comment #6 <> From Alexey
>> Fisher <bug-track at> 2009-10-10 16:48:58* -------
>> Ok, i think i know now how it's happed. I nneded some time to play to reproduce
>> it. There is _no_difference_ if you just boot 2.6.32 kernel run fsck and then
>> boot 2.6.31 kernel and run fsck again - nothing will happen.
>> here is the way i reproduced it:
>> 1. crash (reset or poweroff) 2.6.32-rc3 kernel,
>> 2. start again in 2.6.32-rc3
>> 3. run fsck it well looks clean.. but some progrums will lost it setting.
>> 4. reboot and start with 2.6.31 kernel
>> 5. run fsck and this will find that ext4 is brocken.
>> 6. after fsck fix it.. many fils will be lost.
>> >From the website:
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>   I don't think it's a big difference between ext3 and ext4 in audio
> performance, but it's only my guess.
> And more rapport about Ext4 problem in Ubuntu 9.10 are coming in.
> Possible corruption of large files with ext4 filesystem There have been
> some reports of data corruption with fresh (not upgraded) ext4 file systems
> using the Ubuntu 9.10 kernel when writing to large files (over 512MB). The
> issue is under investigation, and if confirmed will be resolved in a
> post-release update. Users who routinely manipulate large files may want to
> consider using ext3 file systems until this issue is resolved. (453579<>)
> From the website:
> I had this problem my self.
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