Re: Converting ext3 to ext2

Stephen C. Tweedie
Tue, 24 Sep 2002 08:51:02 -0000

Hi,

On Tue, Sep 24, 2002 at 12:10:33AM -0700, Stephen Rasku wrote:

> 	http://www.redhat.com/support/wpapers/redhat/ext3/why.html
>
> 	ext3 is forward and backward compatible with ext2...  Any user who
> 	wishes to un-journal a file system can do so easily...
>
> I am assuming un-journalling is the equivalent of converting it to ext2.
How
> do you do this?  I haven't been able to find anything.  The reason I
want to
> do this is so I can modify my partitions with PartitionMagic and PM
doesn't
> support ext3 as of yet
(http://www.powerquest.com/support/primus/id1375.cfm).

It's not _quite_ as simple as converting to ext3, but not much harder.
You just need to clear the "has_journal" bit, then e2fsck will clean
up the rest of the superblock fields.  Ie.

	tune2fs -O ^has_journal /dev/foo
	e2fsck /dev/foo

should do the trick.

Cheers,
 Stephen