UBIFS on QSPI NOR Flash Corruption

[justinjonas]

Hi everyone,

I am trying to use an UBIFS on the QSPI with an LS1012a processor. I run the following commands to create the ubifs:

ubiformat /dev/mtd5
ubiattach -p /dev/mtd5

ubimkvol /dev/ubi0 -N ffs -m -a 4

mount -t ubifs -o sync ubi0:ffs /mnt/ffs/

Everything seems to work fine the first time I mount it. If I copy some files into the mounted partition, unmount it, and then mount the same partition again I get the following UBIFS errors:

# mount -t ubifs -o sync ubi0:ffs /mnt/ffs/

[ 272.570246] UBIFS error (ubi0:0 pid 872): ubifs_check_node: bad CRC: calculated 0x2a28b98e, read 0xdf1e5343

[ 272.582954] UBIFS error (ubi0:0 pid 872): ubifs_check_node: bad node at LEB 10:13280

[ 272.590790] magic 0x6101831

[ 272.594455] crc 0xdf1e5343

[ 272.598231] node_type 9 (indexing node)

[ 272.602591] group_type 0 (no node group)

[ 272.606965] sqnum 754

[ 272.610105] len 188

[ 272.613247] child_cnt 8

[ 272.616214] level 2

[ 272.619190] Branches:

[ 272.621553] 0: LEB 10:8752 len 108 key (1, inode)

[ 272.626352] 1: LEB 10:1744 len 128 key (65, data, 21)

[ 272.631510] 2: LEB 10:3408 len 188 key (65, data, 61)

[ 272.636668] 3: LEB 10:9056 len 188 key (65, data, 125)

[ 272.641902] 4: LEB 10:6864 len 188 key (66, data, 29)

[ 272.647060] 5: LEB 10:9632 len 188 key (66, data, 93)

[ 272.652206] 6: LEB 10:11360 len 188 key (0, inode)

[ 272.657828] Call trace:

[ 272.660428] UBIFS error (ubi0:0 pid 872): ubifs_read_node: expected node type 9

[ 272.668528] UBIFS error (ubi0:0 pid 872): ubifs_iget: failed to read inode 1, error -117

mount: mount ubi0:ffs on /mnt/ffs failed: Structure needs cleaning

Does anyone have any ideas on what the problem might be? I have tried to disable dma and there is no change in the behavior.

Thank you for you help!

[yipingwang]

Hello Justin Jonas,

This was a known issue in the previous release SDK , there is problem in the QSPI driver to access UBIFS/JFFS2 filesystem. The development team is planning to fix this problem in LSDK 1706 release, which will be released to customers at the end of this month.

So far you could try Linux Kernel 4.4 downloaded from the OpenSource The Linux Kernel Archives, the QSPI related patches should be pushed to the upstream.

Have a great day,
TIC

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[justinjonas]

Hi,

Has this been fixed in the LSDK 1706 yet? I haven't seen an update 1706 on the SDK downloads site yet.

Thanks.

[janmodaal]

Hi all,

I observe the the same type of corruption, LS1012A + MT25QU512A (64MB chip);

After unmout ubifs, detach ubi, next attach ubi + mount ubiufs, trying to read the file, or list a directory,

i see the same 'bad CRC' etc

Yiping, could you share some links to relevant patches ?
Thanks in advance