GSM Firmware Flashed, now UBIFS problem and Kernel Panic

Fri Apr 15 10:44:43 CEST 2011

Hello,
>>>>> If there is a better solution that preserves the FS,
>>>>> >>>> I would be happy to learn about it.
>>>>> >>>> 
>>>> >>> I wonder if it would be possible to boot into a distro on the sd card
>>>> >>> and mount the nand partitions. Then you could save /home. Just a thought.
>>>> >>> 
>>> >> Yes, it is: just mount -t jffs2 /dev/mtdblock6 /mountpoint
>>> >> 
>> > Thank you all for your input..
>> >
>> > I put a qtmoko v35 on an SD card.. an on terminal I did:
>> >
>> > mkdir /home/root/nandfs
>> > mount -t ubifs /dev/mtdblock6 /home/root/nandfs
>> >
>> > but sadly that doesn't work.. dmesg tells me:
>> >
>> > UBIFS error: ubifs_get_sb: cannot open "/dev/mtdblock6", error -22
>> >
>> > Any ideas?
>> >
>> > Cheers,
>> > 
> I think you need to attach the ubifs before mounting. See
> http://openmoko-public-mailinglists.1958.n2.nabble.com/UBI-success-story-td4218730.html
> for the steps, though unless you want to reformat, you shouldn't follow
> all of them.
>> Ben
Alternatively, you can follow http://wiki.openmoko.org/wiki/UBIFS :
# apt-get install mtd-utils # if you are on qtmoko
# ubiattach /dev/ubi_ctrl -O 2048 -m 6
# mount -t ubifs ubi0:om-gta02-rootfs /media/om
# ls /media/om
Anyway it could be a problem related to ubifs instability, which is a 
topic recently discussed in mailing list [1]. You can follow that tread 
and try to:
> Guy who'll have ubifs trubles please try to:
>> 1. disable bulk read in fstab and check if problem will still exist.
> 2. do nanddump and post it or try to reproduce bug with nandsim. (i
> guess ubifs guys can fix problem in case if such dump exist quite fast)

Regards
 Giacomo
[1] http://www.mail-archive.com/community@lists.openmoko.org/msg62518.html
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giacomo 'giotti' mariani
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