[poky] Strange ext filesystem error

[Scott Garman]

On 10/26/2011 09:57 AM, Gary Thomas wrote:
> On 2011-10-26 10:44, McClintock Matthew-B29882 wrote:
>> On Wed, Oct 26, 2011 at 9:25 AM, Gary Thomas<gary at mlbassoc.com> wrote:
>>> I've noticed this behaviour on my Poky/Yocto based systems.
>>> First, I format some device, in this case an MMC card, as ext3
>>> (yes, my kernel supports ext3)
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>
>>> # mkfs.ext3 /dev/mmcblk0p1
>>> Then, when I go to mount it, I get this error:
>>> # mount /dev/mmcblk0p1 /tmp/disk
>>> EXT2-fs (mmcblk0p1): warning: mounting ext3 filesystem as ext2
>>>
>>> Any ideas why? How can I get ext3 file system working?
>>
>> Does your kernel support ext3? Otherwise you can try:
>
> See above :-)
>
>>
>> $ mount -t ext3 /dev/mmcblk0p1 /tmp/disk
>
> This does work although forcing the file system type should not
> be necessary, but I'll live with it. This warning/error must have
> something to do with the mount program (part of busybox).

Does dmesg complain about the filesystem at all?

FWIW if the datestamps on the filesystem are unusual (e.g, in the 
future), this would likely cause problems when mouting them. But 
generally I would think that might raise a warning to run fsck, and not 
cause an ext3 fs to be degraded to ext2.

Scott

-- 
Scott Garman
Embedded Linux Engineer - Yocto Project
Intel Open Source Technology Center