File system errors - Ext4 ?

Tommy Hjalmarsson tommy.h at bredband.net
Thu Nov 5 18:17:21 GMT 2009


David Stephens wrote:
> 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 ext3.
>
>
>
> On Thu, Nov 5, 2009 at 1:02 PM, Tommy Hjalmarsson 
> <tommy.h at bredband.net <mailto:tommy.h at bredband.net>> 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 bredband.net
>>     <mailto:tommy.h at bredband.net>>
>>
>>         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
>>>         <http://ubuntu-tweak.com/>  to install third party software
>>>         (Opera, VirtualBox, Code Blocks etc.) ?
>>>
>>>         Thank you for your time,
>>>         Robin
>>         Here is a bugg comment:
>>         /Comment #6
>>         <http://bugzilla.kernel.org/show_bug.cgi?id=14354#c6> From
>>         Alexey Fisher <mailto:bug-track at fisher-privat.net> 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: http://bugzilla.kernel.org/show_bug.cgi?id=14354
>>             
>>
>>
>>
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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 <https://bugs.launchpad.net/bugs/453579>)
>
>     >From the website:
>     http://www.ubuntu.com/getubuntu/releasenotes/910
>
>     I had this problem my self.
>
>
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>
>
>
> -- 
> "When you get to the end of all the light you know and it's time to 
> step into the darkness of the unknown, faith is knowing that one of 
> two things shall happen: either you will be given something solid to 
> stand on, or you will be taught how to fly." -- Dr. Edward Teller
Better to be safe than sorry:)
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