UBIFS errors when file-system is full

[Richard Weinberger]

Hi!

Am 21.07.2015 um 08:04 schrieb Bhuvanchandra DV:
> Ran the power cut tests with fm_debug enabled, no additional logs are observed.
> After few hundred power cuts U-Boot fails to mount with -22 and kernel fails
> mounting with stack trace when reading the node.

Why U-Boot? Has U-Boot fastmap enabled?

Anyway, we need to sort out what is going on.
As fm_debug does not trigger it could also be a non-fastmap issue.
Did you try your test without fastmap being enabled?

Does your target pass UBI tests too?

> Log:
[...]
> [    2.847326] UBIFS error (ubi0:0 pid 1): ubifs_read_node: bad node type (255 but expected 3)
> [    2.866839] UBIFS error (ubi0:0 pid 1): ubifs_read_node: bad node at LEB 981:70368, LEB mapping status 1
> [    2.887961] Not a node, first 24 bytes:
> [    2.891864] 00000000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff                          ........................

Hmm, LEB1 is unmapped.
If you disable fastmap, does this target boot as expected?
Or is this a persistent corruption?

Thanks,
//richard