Re: [tlug] dual boot - Windows/Linux

["Greg Thomson " <gregt@example.com>]

On Fri, 28 Sep 2007 16:47:57 +0900, Keith Bawden <keith@example.com> wrote:

> On 9/28/07, Greg Thomson <gregt@example.com> wrote:
> > To the windows system yes. To the linux system it's still EXT3.
> > I believe EXT3 to backwards compatible with EXT2.
>
> Yes I'm aware of this, but if you drop the journaling from an ext3
> volume then it pretty much has "become" and ext2 volume.
>
> If Windows does not drop the journal but ignores it then this will
> leave your journal in an unknown state when you reboot to Linux. After
> all there may be changes made by Windows that have not been journaled.
> Thus a journal rebuild may be required when next you boot to Linux.
>
> Regards, Keith
I'm no expert on this but according to the link (1) in my last post if an  
EXT3 file system is cleanly unmounted the journal is empty. With the  
jounal empty windows is then able to mount it as EXT2 and read & write  
whatever it needs. I would think then that when Linux remounts it as EXT3  
that journaling would start until the fs is unmounted again. In the faq  
they also say that if the EXT3 fs isn't cleanly unmounted the Ext2 IFS  
software will not mount it.

(1) http://www.fs-driver.org/faq.html#acc_ext3

Greg.


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