Re: Antw: Re: Create, Flash and Mount UBIFS Images

Artem Bityutskiy
2009-04-02T12:21:21Z

On Thu, 2009-04-02 at 14:03 +0200, Manuel Sahm wrote:
> Hello, sorry for the previous post without informations...
>
> Here are the last two steps I did embedded:
> [Attach the /dev/mtd6 to ubifs and try to mount it]
> [Before I did a "flash_eraseall /dev/mtd6" and a "ubiformat /dev/mtd6
> -s512 -f ubi.img"]
>
> /usr/sbin # ubiattach /dev/ubi_ctrl -m6 -d6 -O512
> UBI: attaching mtd6 to ubi6
> UBI: physical eraseblock size: 131072 bytes (128 KiB)
> UBI: logical eraseblock size: 129024 bytes
> UBI: smallest flash I/O unit: 2048
> UBI: sub-page size: 512
> UBI: VID header offset: 512 (aligned 512)
> UBI: data offset: 2048
> UBI: attached mtd6 to ubi6

This ubi6 is weird. Do you have 6 UBI devices, or
this is just because of "-d6"? Could you please try
without "-d6"?

> UBI: MTD device name: "Partition 7 - UPDATE : 32 MByte"
> UBI: MTD device size: 32 MiB
> UBI: number of good PEBs: 256
> 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: 233
> UBI: total number of reserved PEBs: 23
> UBI: number of PEBs reserved for bad PEB handling: 2
> UBI: max/mean erase counter: 0/0
> UBI: background thread "ubi_bgt6d" started, PID 1336
> UBI device number 6, total 256 LEBs (33030144 bytes, 31.5 MiB),
> available 233 LEBs (30062592 bytes, 28.7 MiB), LEB size 129024 bytes
> (126.0 KiB)
> /usr/sbin # mount -t ubifs ubi
> ubiattach ubidetach ubimirror ubinize ubiupdatevol
> ubicrc32 ubiformat ubimkvol ubirename
> ubicrc32.pl ubigen ubinfo ubirmvol
> /usr/sbin # mount -t ubifs ubi6_0 /mnt/OBIDfs_ubi/
> UBIFS: static UBI volume - read-only mode

In the previous e-mail it was said that the volume is dynamic.
Why it is static now? hmm..

> UBIFS error (pid 1391): mount_ubifs: cannot mount read-write -
> read-only media
> UBIFS: static UBI volume - read-only mode
> UBIFS error (pid 1391): validate_sb: bad superblock, error 4
> mount: mounting ubi6_0 on /mnt/OBIDfs_ubi/ failed: Invalid argument

Could you please enable UBIFS debugging ?
And then send what dmesg says you, not only what you see on the
console, please.