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	for linux-mtd@lists.infradead.org; Fri, 26 Jun 2009 10:46:38 +0000
Subject: Re: about ubiformat mtdblock
From: Artem Bityutskiy <dedekind@infradead.org>
To: tommy <jiujin.hong@mid-fun.com>
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Date: Fri, 26 Jun 2009 13:46:12 +0300
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On Fri, 2009-06-26 at 18:03 +0800, tommy wrote:
> hi,dear all!
> 
> My kernel version is 2.6.24 ,patch ubifs !
> 
> I met error on ubiformat .
> Following is my step!
> 
> 
> # ./ubiformat /dev/mtd2 -f /ubi.img
> ubiformat: mtd2 (NAND), size 654311424 bytes (624.0 MiB), 262144
> eraseblocks of 262144 bytes (256.0 KiB), min. I/O size 2048 bytes
> libscan: scanning eraseblock 2495 -- 100 % complete
> ubiformat: 2496 eraseblocks have valid erase counter, mean value is 0
> ubiformat: flashing eraseblock 383 -- 100 % complete
> ubiformat: formatting eraseblock 2495 -- 100 % complete
> # ./ubiattach /dev/ubi_ctrl -m 2
> vmalloc is used.
> UBI: physical eraseblock size:   262144 bytes (256 KiB)
> UBI: logical eraseblock size:    258048 bytes
> UBI: smallest flash I/O unit:    2048
> UBI: VID header offset:          2048 (aligned 2048)
> UBI: data offset:                4096
> UBI: volume 0 ("ubifs0") re-sized from 407 to 2468 LEBs
> UBI: attached mtd2 to ubi0
> UBI: MTD device name:            "File System"
> UBI: MTD device size:            624 MiB
> UBI: number of good PEBs:        2496
> UBI: number of bad PEBs:         0
> UBI: max. allowed volumes:       128
> UBI: wear-leveling threshold:    4096
> UBI: number of internal volumes: 1
> UBI: number of user volumes:     1
> UBI: available PEBs:             0
> UBI: total number of reserved PEBs: 2496
> UBI: number of PEBs reserved for bad PEB handling: 24
> UBI: max/mean erase counter: 2/1
> UBI: background thread "ubi_bgt0d" started, PID 306
> UBI device number 0, total 2496 LEBs (644087808 bytes, 614.2 MiB),
> available 0 LEBs (0 bytes), LEB size 258048 bytes (252.0 KiB)
> # mount -t ubifs ubi0_0 /tmp/
> UBIFS error (pid 307): ubifs_read_superblock: on-flash format version
> is 4, but software only supports up to version 3
> mount: mounting ubi0_0 on /tmp/ failed: Invalid argument
> 
> 
> can anyone help me ?thanks!

Could you please update your UBI/UBIFS:
git://git.infradead.org/~dedekind/ubifs-v2.6.24.git

See here:
http://www.linux-mtd.infradead.org/doc/ubifs.html#L_source

There were many serious bug-fixes, sou it is a good idea to update
ubifs.

-- 
Best regards,
Artem Bityutskiy (Битюцкий Артём)