Re: error!: "/dev/ubi0" is not a character device ?!?

[Arno Steffen <arno.steffen@googlemail.com>]

Thanks Artem,
I am using a 2.6.33 kernel, this should be new enough. It is right,
that it is as a block device (in  /dev/ ) ?

[root@or:/]# ubiattach /dev/ubi_ctrl -m 8 -d 8
UBI: attaching mtd8 to ubi8
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 warning: ubi_eba_init_scan: cannot reserve enough PEBs for bad PEB
handling, reserved 1, need 3
UBI: attached mtd8 to ubi8
UBI: MTD device name:            "extra"
UBI: MTD device size:            41 MiB
UBI: number of good PEBs:        331
UBI: number of bad PEBs:         1
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: 331
UBI: number of PEBs reserved for bad PEB handling: 1
UBI: max/mean erase counter: 1/0
UBI: image sequence number: 228182237
UBI: background thread "ubi_bgt8d" started, PID 386
UBI device number 8, total 331 LEBs (42706944 bytes, 40.7 MiB),
available 0 LEBs (0 bytes), LEB size 129024 bytes (126.0 KiB)
[root@or:/]# ll /dev/ubi*
brw-rw----    1 root     root     253,   0 Jan  1 00:00 /dev/ubi8
brw-rw----    1 root     root     253,   1 Jan  1 00:00 /dev/ubi8_0
crw-rw----    1 root     root      10,  63 Jan  1 00:00 /dev/ubi_ctrl
[root@or:/]#
[root@or:/]# mount -t ubifs /dev/ubi8 /tmp
mount: mounting /dev/ubi8 on /tmp failed: No such device
[root@or:/]# mount -t ubifs /dev/ubi8_0 /tmp
mount: mounting /dev/ubi8_0 on /tmp failed: No such device
[root@or:/]# mount -t ubifs ubi8_0 /tmp
mount: mounting ubi8_0 on /tmp failed: No such device
[root@or:/]# mount -t ubifs ubi8 /tmp
mount: mounting ubi8 on /tmp failed: No such device

(of cource /tmp is available rwx for all)


2010/7/27 Artem Bityutskiy <dedekind1@gmail.com>:
> On Mon, 2010-07-26 at 15:49 +0200, Arno Steffen wrote:
>> [root@or:/]# mount -t ubifs /dev/ubi0_0 /tmp
>> mount: mounting /dev/ubi0_0 on /tmp failed: No such device
>
> Try mount -t ubifs ubi0_0 /tmp
>
> Mounting by character device was added only recently, probably your
> kernel is older?
>
> --
> Best Regards,
> Artem Bityutskiy (Артём Битюцкий)
>
>