Date: Tue, 11 Dec 2001 09:08:06 -0600 From: Glenn Johnson <glennpj@charter.net> To: "H. Wade Minter" <minter@lunenburg.org> Cc: questions@FreeBSD.ORG Subject: Re: mount_ext2fs and ext3? Message-ID: <20011211150806.GA899@gforce.johnson.home> In-Reply-To: <20011211092824.T73556-100000@bunning.skiltech.com> References: <20011211092824.T73556-100000@bunning.skiltech.com>
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On Tue, Dec 11, 2001 at 09:30:10AM -0500, H. Wade Minter wrote:
> I'm pretty sure the answer is "no", but thought I'd ask anyway.
> Since the Linux ext2 and ext3 filesystems are fairly compatible, can
> FreeBSD's mount_ext2fs command (with EXT2FS support compiled into the
> kernel) be used to mount an ext3 filesystem?
I can not provide a definitive answer but I can explain my experience.
I have a dual boot system with Mandrake and FreeBSD. I have a primary
Linux partition that I use to shuttle information between the two
operating systems. The other day I was updating from Mandrake 8.0 to
Mandrake 8.1 and I inadvertently changed the "shuttle" partition from
ext2 to ext3. To my surprise, FreeBSD was able to mount the partition,
read, and write to it. I was not entirely comfortable with this so I
went back into the Mandrake setup program and changed that partition
back to ext2. I got a warning that changing the type would cause all
data on that partition to be lost. I did not have anything critical on
there so proceeded. It turns out though that all of the data is still
there. I did not write anything to that partition while booted into
Linux so I do not know if that would have caused something to change on
the partition that would have tripped up FreeBSD. I may try that if I
get some extra time.
> I'm trying, but getting an "incorrect superblock" error.
A couple of things come to mind:
[1] Do you have 'options EXT2FS' in your kernel config?
[2] Is the Linux partition on a primary or extended partition? I do not
think FreeBSD can mount an extended partition.
I hope that helps.
--
Glenn Johnson
glennpj@charter.net
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