Mounting ext3 problem

ext3 is compatible w/ext2 when the dirty bit is not set.
When
it is set (one common reason is the filesystem not being
correctly 
unmounted), journal rollback is necessary which only ext3
can handle.

thats why running fsck_ext2fs on the partition should take
care of the 
issues.

it doesn't mean your partition is actually
"dirty", its just that 
freebsd doesn't (usually) attempt to mount partitions that
were 
incorrectly unmounted.

Let me know if it works. If you dont have ext2 support in
fsck yet - you 
can find the source in /usr/ports/sysutils/fsck_ext2fs

-Ben
Sasa Stupar wrote:

> Hi!
>
> I have installed FBSD 5.4 and recompiled kernel with
> option    EXT2FS
> so I could mount my second drive.
> When I try to mount with:
> #mount -o ro -t ext2fs /dev/ad3s1 /mnt/linux
> I get back
> ext2fs: /dev/ad3s1: Invalid argument
> Whe typing dmesg I get more on error:
> WARNING: mount of ad3s1 denied due to unsupported
optional features
>
>> From fdisk, info on drive:
>
> # fdisk /dev/ad3
> ******* Working on device /dev/ad3 *******
> parameters extracted from in-core disklabel are:
> cylinders=77536 heads=16 sectors/track=63 (1008
blks/cyl)
>
> Figures below won't work with BIOS for partitions not
in cyl 1
> parameters to be used for BIOS calculations are:
> cylinders=77536 heads=16 sectors/track=63 (1008
blks/cyl)
>
> Media sector size is 512
> Warning: BIOS sector numbering starts with sector 1
> Information from DOS bootblock is:
> The data for partition 1 is:
> sysid 131 (0x83),(Linux native)
>    start 63, size 78156225 (38162 Meg), flag 80
(active)
>        beg: cyl 0/ head 1/ sector 1;
>        end: cyl 1023/ head 15/ sector 63
> The data for partition 2 is:
> <UNUSED>
> The data for partition 3 is:
> <UNUSED>
> The data for partition 4 is:
>
>
> I have searche on the net and what I have done here is
what people 
> suggest to do but it doesn't work.
>
> What am I missing here?
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--On 30. september 2005 23:22 -0400 nawcom <nawcomnawcom.com> wrote:

> ext3 is compatible w/ext2 when the dirty bit is not
set. When
> it is set (one common reason is the filesystem not
being correctly
> unmounted), journal rollback is necessary which only
ext3 can handle.
>
> thats why running fsck_ext2fs on the partition should
take care of the
> issues.
>
> it doesn't mean your partition is actually
"dirty", its just that freebsd
> doesn't (usually) attempt to mount partitions that were
incorrectly
> unmounted.
>
> Let me know if it works. If you dont have ext2 support
in fsck yet - you
> can find the source in /usr/ports/sysutils/fsck_ext2fs
>
> -Ben


I can't find that port. I have cvsup my ports and I have
even searched on 
the FreeBSD home page of ports collection but it didn't find
it. Are you 
sure about the name?

Sasa
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