mount ubi volume fails: No such device

[Lars Michael]

Hi,

I am trying to mount an UBI volume, but it fails:

# mount -t ubifs ubi0_0 /mnt/ubi
mount: mounting ubi0_0 on /mnt/ubi failed: No such device
 
Using mkfs.ubifs and ubinize I have prepared an image containing three volumes. On the target I have used ubiformat to flash the image and ubiattach to attach to mtd1.

Target kernel: 2.6.29, platform m68k (mcf54418). The UBI tools on the host are built from git://git.infradead.org/mtd-utils.git.

Everything looks fine to me, see below, but how do I mount a volume? I have tried various ways to refer to the device (like ubi0:datafs, ubi0_0) without luck.

Thanks for any help!

[root at M54418TWR /]# ls -l /dev/ubi*

crw-rw---- 1 root root 252,  0 Nov 24 17:54 /dev/ubi0
crw-rw---- 1 root root 252,  1 Nov 24 17:54 /dev/ubi0_0
crw-rw---- 1 root root 252,  2 Nov 24 17:54 /dev/ubi0_1
crw-rw---- 1 root root 252,  3 Nov 24 17:54 /dev/ubi0_2
crw-rw---- 1 root root  10, 63 Nov 24 17:31 /dev/ubi_ctrl
 
[root at M54418TWR /]# ubinfo -a
UBI version:                    1
Count of UBI devices:           1
UBI control device major/minor: 10:63
Present UBI devices:            ubi0
 
ubi0:
Volumes count:                           3
Logical eraseblock size:                 126976
Total amount of logical eraseblocks:     2036 (258523136 bytes, 246.5 MiB)
Amount of available logical eraseblocks: 0 (0 bytes)
Maximum count of volumes                 128
Count of bad physical eraseblocks:       4
Count of reserved physical eraseblocks:  20
Current maximum erase counter value:     5
Minimum input/output unit size:          2048 bytes
Character device major/minor:            252:0
Present volumes:                         0, 1, 2
 
Volume ID:   0 (on ubi0)
Type:        dynamic
Alignment:   1
Size:        1058 LEBs (134340608 bytes, 128.1 MiB)
State:       OK
Name:        rootfs
Character device major/minor: 252:1
-----------------------------------
Volume ID:   1 (on ubi0)
Type:        dynamic
Alignment:   1
Size:        133 LEBs (16887808 bytes, 16.1 MiB)
State:       OK
Name:        progfs
Character device major/minor: 252:2
-----------------------------------
Volume ID:   2 (on ubi0)
Type:        dynamic
Alignment:   1
Size:        821 LEBs (104247296 bytes, 99.4 MiB)
State:       OK
Name:        datafs
Character device major/minor: 252:3