Reg:FAT support for NAND

Reg:FAT support for NAND

[veena s]

Hi ,


I want to Use FAT Filesystem for NAND in the Linux
Kernel ver-2.6.10.
We have tried by enabling NFTL layer . But we are
facing the following  problem to mount  with FAT.....
 
1 ) nftl_format : utility is used to format the device
requires the erase size to be 8k bytes, but our device
has erase size of 128kbytes.so nftl_format is not able
to recognise the erase size.
 
2 ) We have created the device nodes as /dev/nftla and
tried to mount FAT over it using the following
command.
 
mount -tvfat /dev/nftla /mnt/nand
but above command is failing.
 
So please suggest whether the above steps are
correct.?
and help us how to use FAT over NAND.
 
Thanks
 



      Planet Earth is in the hot seat. Know more - http://in.search.yahoo.com/search?&fr=na_onnetwork_mail_taglines&ei=UTF-8&rd=r1&p=global+warming

Re: Reg:FAT support for NAND

[Jason Liu]

In order to support vfat filesystem on raw nand flash, the new FTL
should be developed. The simple FTL(mtdblock.c) that mtd provide has a
lot of shortcomings or bugs, such as no BBM, no wear-leveling, not
correctly handle the ecc error case, etc.

2008/5/12 veena s <veena_3_2003@yahoo.co.in>:
> Hi ,
>
>
> I want to Use FAT Filesystem for NAND in the Linux
> Kernel ver-2.6.10.
> We have tried by enabling NFTL layer . But we are
> facing the following  problem to mount  with FAT.....
>
> 1 ) nftl_format : utility is used to format the device
> requires the erase size to be 8k bytes, but our device
> has erase size of 128kbytes.so nftl_format is not able
> to recognise the erase size.
>
> 2 ) We have created the device nodes as /dev/nftla and
> tried to mount FAT over it using the following
> command.
>
> mount -tvfat /dev/nftla /mnt/nand
> but above command is failing.
>
> So please suggest whether the above steps are
> correct.?
> and help us how to use FAT over NAND.
>
> Thanks
>
>
>
>
>      Planet Earth is in the hot seat. Know more - http://in.search.yahoo.com/search?&fr=na_onnetwork_mail_taglines&ei=UTF-8&rd=r1&p=global+warming
>
> ______________________________________________________
> Linux MTD discussion mailing list
> http://lists.infradead.org/mailman/listinfo/linux-mtd/
>

Re: Reg:FAT support for NAND

[yang chen]

I forgot replying the mail to mtd maillist.  sorry.

2008/5/15 veena s <veena_3_2003@yahoo.co.in>:
>
>
> Hi Chan ,
> Thanks a lot i tried with this it is working fine ....
>
> Regards
> Veena
>
>
> --- yang chen <yangchen.mot@gmail.com> wrote:
>
>> why not use vfat over jffs2 ?  you can mount your
>> partition as jffs2
>> first , then create a vfat image (a file) in it.
>> then loop back the
>> file as loopback device ,then mount the loopback
>> device as vfat, so
>> that your vfat image can use jffs2' wear levelling.
>>
>> -Yang
>>
>>
>>
>> 2008/5/12 veena s <veena_3_2003@yahoo.co.in>:
>> > Hi ,
>> >
>> >
>> >  I want to Use FAT Filesystem for NAND in the
>> Linux
>> >  Kernel ver-2.6.10.
>> >  We have tried by enabling NFTL layer . But we are
>> >  facing the following  problem to mount  with
>> FAT.....
>> >
>> >  1 ) nftl_format : utility is used to format the
>> device
>> >  requires the erase size to be 8k bytes, but our
>> device
>> >  has erase size of 128kbytes.so nftl_format is not
>> able
>> >  to recognise the erase size.
>> >
>> >  2 ) We have created the device nodes as
>> /dev/nftla and
>> >  tried to mount FAT over it using the following
>> >  command.
>> >
>> >  mount -tvfat /dev/nftla /mnt/nand
>> >  but above command is failing.
>> >
>> >  So please suggest whether the above steps are
>> >  correct.?
>> >  and help us how to use FAT over NAND.
>> >
>> >  Thanks
>> >
>> >
>> >
>> >
>> >       Planet Earth is in the hot seat. Know more -
>>
> http://in.search.yahoo.com/search?&fr=na_onnetwork_mail_taglines&ei=UTF-8&rd=r1&p=global+warming
>> >
>> >
>>
> ______________________________________________________
>> >  Linux MTD discussion mailing list
>> >
>>
> http://lists.infradead.org/mailman/listinfo/linux-mtd/
>> >
>>
>>
>>
>> --
>> -Yang
>>
>
>
>
>      Check out the all-new face of Yahoo! India. Go to http://in.yahoo.com/
>
>



-- 
-Yang