Re: another issue with ubifs on v3.6-rc2: attaching an formatted device

Uwe Kleine-König
2012-08-21T09:38:42Z

On Mon, Aug 20, 2012 at 10:11:07PM +0300, Artem Bityutskiy wrote:
> On Mon, 2012-08-20 at 18:07 +0200, Uwe Kleine-König wrote:
> > [ 163.714143] uncorrectable error :
> > [ 163.727597] UBI warning: ubi_io_read: error -74 (ECC error) while
> > reading 64 bytes from PEB 0:0, read only 64 bytes, retry
> > [ 163.740737] uncorrectable error :
> > [ 163.744032] UBI warning: ubi_io_read: error -74 (ECC error) while
> > reading 64 bytes from PEB 0:0, read only 64 bytes, retry
> > [ 163.757119] uncorrectable error :
> > [ 163.760487] UBI warning: ubi_io_read: error -74 (ECC error) while
> > reading 64 bytes from PEB 0:0, read only 64 bytes, retry
> > [ 163.774427] uncorrectable error :
> > [ 163.777808] UBI error: ubi_io_read: error -74 (ECC error) while
> > reading 64 bytes from PEB 0:0, read 64 bytes
>
> This looks like your flash does not really support sub-pages while
> declares that it does. Check it with MTD subpage test.
the subpages test fails with:

[ 82.435792] mtd_subpagetest: written up to eraseblock 7424
[ 82.905775] mtd_subpagetest: written up to eraseblock 7680
[ 83.375201] mtd_subpagetest: written up to eraseblock 7936
[ 83.840447] mtd_subpagetest: written 8192 eraseblocks
[ 83.845522] mtd_subpagetest: verifying all eraseblocks
[ 83.852740] uncorrectable error :
[ 83.856086] mtd_subpagetest: error: read failed at 0x0
[ 83.861469] mtd_subpagetest: error -74 occurred
[ 83.866093] =================================================
Error: could not insert module ./drivers/mtd/tests/mtd_subpagetest.ko: Bad message

I don't have a clue yet how to debug that further. Will start with
checking older kernel releases. Any hints welcome.

Best regards
Uwe

--
Pengutronix e.K. | Uwe Kleine-König |
Industrial Linux Solutions | http://www.pengutronix.de/ |