[OE-core] wic debug suggestions

[Maciej Borzecki]

On Wednesday 22 of October 2014 09:03:03 Maciej Borzecki wrote:
> On Monday 20 of October 2014 13:45:37 Philip Balister wrote:
> > I'm trying to make an sd card using the sdimage-bootpart.wks file. I've
> > made an image and dd'ed it to a card. The card has a good vfat
> > partition, but the ext4 partition won't mount. Looks like bad
> > superblock. I can format the partition manually, so partitions seem OK
> > and card works.
> > 
> > Does anyone have any suggestions for debugging this?
> 
> In default wks, the vfat partition is /boot, ext4 is /. If I understood you
> correctly / fails to mount, is that right?
> 
> I've rebuilt an image with poky rev
> 8ac8eca2e3bd8c78e2b31ea974930ed0243258a3. Loading via loopback and mounting
> partition 2 (/ in this case) works fine.

Verified with current master 924da20c6f2f183fa7e930e4c3c6b14c090acbe5, works 
fine. The image works both as loopback and in BeagleBone Black.

> 
> Can you post the output this command?
>   wic create -D -e core-image-minimal sdimage-bootpart
> 
> Ext4 image is built by image.bbclass (Tom, please correct me if I'm wrong on
> this). It should be possible to do the loopback/mount thing with the image
> file as well. Can you check if you can mount it this way?
Disregard this statement as it is incorrect. I forgot that wic builds all 
images separately from bitbake. The temp ext4 appears only if you have run wic 
at this location: /var/tmp/wic/build/rootfs_root.ext4. Try to mount that.

Also try running tune2fs -l /var/tmp/wic/build/rootfs_root.ext4 to see if that 
produces any reasonable output.

-- 

Maciej Borzęcki 
Senior Software Engineer Open-RnD Sp. z o.o. 
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