Cannot mount ubifs partition

[Richard Weinberger]

Am 13.05.2015 um 10:48 schrieb Michael Niarchos:
> 
> 
> On 05/13/2015 09:49 AM, Richard Weinberger wrote:
>> On Wed, May 13, 2015 at 8:25 AM, Michael Niarchos
>> <michael.niarchos at gmail.com> wrote:
>>> On 13-May-15 06:05, Brian Norris wrote:
>>>>
>>>> On Tue, May 12, 2015 at 10:38:31PM +0300, Michael N wrote:
>>>>>
>>>>> I am using a Zynq7000 with NAND 512MB and I am trying to deploy Linux on
>>>>> NAND
>>>>> memory. I use a custom built kernel with minimal features (UBI and UBIFS
>>>>> support are enabled and mtd-utils installed). I can ubiformat an mtd
>>>>> partition, I
>>>>> can ubiattach and ubidetach it but whenever I try to mount the
>>>>> partition I get this error.
>>>>>
>>>>>              mount: mounting /dev/ubi0:ubi-rootfs on /mnt/ubifs failed:
>>>>> No such device
>>>>
>>>> What's the exact mount command you're running? Did you take a look at
>>>> the MTD FAQ?
>>>>
>>>> http://linux-mtd.infradead.org/faq/ubifs.html#L_mount_ubif
>>>
>>>
>>> I am running this command:
>>>
>>> $ mount -t ubifs ubi0:ubi-rootfs /mnt/ubifs
>>
>> Does it work if you use the device node? i.e. /dev/ubi0_X?
>> Is it attached?
> 
> root at zx3-pm3-zynq7:~# ubiattach /dev/ubi_ctrl -m 2
> [  115.549805] UBI: attaching mtd2 to ubi0
> [  115.787102] mmc0: Card removed during transfer!
> [  115.791560] mmc0: Resetting controller.
> [  115.803396] mmc0: Card removed during transfer!
> [  115.807853] mmc0: Resetting controller.
> [  119.024116] UBI: scanning is finished
> [  119.056419] UBI: attached mtd2 (name "nand-rootfs", size 506 MiB) to ubi0
> [  119.063272] UBI: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
> [  119.070053] UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
> [  119.076670] UBI: VID header offset: 2048 (aligned 2048), data offset: 4096
> [  119.083579] UBI: good PEBs: 4044, bad PEBs: 4, corrupted PEBs: 0
> [  119.089580] UBI: user volume: 1, internal volumes: 1, max. volumes count: 128
> [  119.096636] UBI: max/mean erase counter: 6/2, WL threshold: 4096, image sequence number: 1208887967
> [  119.105709] UBI: available PEBs: 0, total reserved PEBs: 4044, PEBs reserved for bad PEB handling: 76
> [  119.115500] UBI: background thread "ubi_bgt0d" started, PID 933
> UBI device number 0, total 4044 LEBs (513490944 bytes, 489.7 MiB), available 0 LEBs (0 bytes), LEB size 126976 bytes (124.0 KiB)
> root at zx3-pm3-zynq7:~# mount -t ubifs /dev/ubi0_0 /mnt/
> mount: mounting /dev/ubi0_0 on /mnt/ failed: No such device

Ahh, -m 2...
What does ubinfo -a print?

Thanks,
//richard