UBIFS mount fails due to unknown filesystem

[pallinger]

I am trying to put ubifs on the nand, currently to no avail. Here is what I got:

• I formatted mtd2 as a clean ubifs.
  ubiformat /dev/mtd2
• I attached mtd2 as ubi0:
  ubiattach /dev/ubi_ctrl -m 2
  UBI device number 0, total 4041 LEBs (521385984 bytes, 497.2 MiB), available 3997 LEBs (515708928 bytes, 491.8 MiB), LEB size 129024 bytes (126.0 KiB)
• Tried to mount the result:
  mount -t ubifs ubi2:root /mnt/ubi
  mount: ismeretlen fájlrendszertípus: "ubifs"
  (unknown filesystem type: "ubifs")
• checked /proc/filesystems:
  cat /proc/filesystems |grep ubi
  nodev   ubifs
  

Does anyone have a suggestion what I did wrong?
I am using the 2.6.32.4 kernel and debian lenny, except for the mtd-utils package, which is from squeeze and has version 20090606-1.

[pingtoo]

I think you need ubi0:root, Not ubi2:root.

[pallinger]

I think you need ubi0:root, Not ubi2:root.

Thanks, you've got a point, but still I had no success.

Code:

mount -t ubifs ubi0:root /mnt/ubi
mount: ismeretlen fájlrendszertípus: "ubifs"

Meanwhile, I have discovered that dmesg contains some useful(?) information on the error:

Code:

UBIFS error (pid 1874): ubifs_get_sb: cannot open "ubi0:root", error -19

Some googling suggests that I may got the volume name wrong, I will look into that.

Update: I figured it out!
The missing step was an

Code:

ubimkvol /dev/ubi0 -m -N rootfs

before mounting.