Linux/AM3352: UBIFS changes to read only

sanjay kumar das

Part Number: AM3352

Tool/software: Linux

I am using linux-3.2.0-psp04.06.00.11 for TI AM3352 based device. The product is deployed in field for more then 1 year and working properly until recently when it was unable to save some files. We observed that the UBIFS goes to read only mode and no files can be saved in this mode. I checked the error message and the error message is as below:

UBIFS error (pid 1274): ubifs_write_inode: can't write inode 150, error -30

UBIFS error (pid 1274): make_reservation: cannot reserve 160 bytes in jhead 1, error -30

Once the system is rebooted, the UBI file system recovers but again after some time it goes to read only mode. This can be recreated and the system goes to read only mode in 4-5 hours. We are using 256MB NAND Flash and system boots from flash.

It's very urgent, please advise how to overcome this issue.

over 6 years ago

0 Biser Gatchev-XID over 6 years ago

TI__Guru**** 393215 points

The software team have been notified. They will respond here.

0 Cvetolin Shulev-XID over 6 years ago

TI__Guru 65405 points

Hi Sanjay Kumar,

Read the linked below suggestions:
www.linux-mtd.infradead.org/.../ubifs.html
www.linux-mtd.infradead.org/.../ubifs.html
www.linux-mtd.infradead.org/.../ubi.html

and check whether the folowing patch presents to your Linux kernel:
patchwork.ozlabs.org/.../

BR
Tsvetolin Shulev

0 sanjay kumar das over 6 years ago in reply to Cvetolin Shulev-XID

Prodigy 20 points

Thanks much Biser and Tsvetolin Shulev for your prompt response. I have added the below patch and running the device for last 3 days and it's working fine and UBIFS didn't go to read only mode( in faulty condition it goes to read only mode in 4-5 hours). But I have a concern regarding the comment by Artem Bityutskiy in the same forum that it's incorrect to add this patch. So please confirm if it is safe to add the patch.

the patch:

--- linux-2.6.32/fs/ubifs/scan.c        (revision 1892)
+++ linux-2.6.32/fs/ubifs/scan.c        (working copy)
@@ -339,7 +339,7 @@ 
                       if (!quiet)
                               ubifs_err("corrupt empty space at LEB %d:%d",
                                         lnum, offs);
-                       goto corrupted;
+                       //goto corrupted;
               }

       return sleb;

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Linux/AM3352: UBIFS changes to read only