[U-Boot] UBIFS fails on SheevaPlug

Dimax dimax.main at gmail.com
Sun Oct 28 15:48:12 CET 2012

After power short u-boot fails to mount UBIFS and board stuck. Below is a
trace of u-boot

Marvell>> boot

UBI: mtd1 is detached from ubi0

Creating 1 MTD partitions on "nand0":

0x000000500000-0x000020000000 : "mtd=2"

UBI: attaching mtd1 to ubi0

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 mtd1 to ubi0

UBI: MTD device name:            "mtd=2"

UBI: MTD device size:            507 MiB

UBI: number of good PEBs:        4055

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: 4055

UBI: number of PEBs reserved for bad PEB handling: 40

UBI: max/mean erase counter: 1/0

UBIFS: recovery needed

Error reading superblock on volume 'ubi:rootfs'!

UBIFS not mounted, use ubifs mount to mount volume first!

UBIFS not mounted, use ubifs mount to mount volume first!

Wrong Image Format for bootm command

ERROR: can't get kernel image!

To recover from this situation I boot from USB stick and simply mounts the
same UBIFS partition:

root at debian:~# mount -t ubifs ubi0:rootfs /mnt
[  306.205029] UBIFS: recovery needed
[  309.341987] UBIFS: recovery completed
[  309.345705] UBIFS: mounted UBI device 0, volume 0, name "rootfs"
[  309.351738] UBIFS: file system size:   515192832 bytes (503118 KiB, 491
MiB, 3993 LEBs)
[  309.359789] UBIFS: journal size:       25804800 bytes (25200 KiB, 24
MiB, 200 LEBs)
[  309.367495] UBIFS: media format:       w4/r0 (latest is w4/r0)
[  309.373352] UBIFS: default compressor: lzo
[  309.377479] UBIFS: reserved for root:  4952683 bytes (4836 KiB)

As you can see mount manage to recover partition.
Is where any way to make u-boot to recover UBIFS partition as well?
What else can I do to make my system stable and survive power shorts?


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