Subject: Re: UBIFS problem on MPC8536DS

From: Felix Radensky <[email-masked]>
Date: Wed, 14 Oct 2009 15:21:23 +0200

Adrian Hunter wrote:
> Felix Radensky wrote:
>> Hi,
>>
>> I have a strange problem in linux-2.6.31 running on MPC8536DS board.
>> It is 100% reproducible, by opening a 350MB tar file into ubifs volume
>> on NAND flash, and starting erase of NOR flash partition right after 
>> that.
>>
>> If I don't start  NOR erase, everything works fine. Also, If I run 
>> sync after
>> tar, no problem occurs.  The NOR flash is 32MB  Spansion, NAND is
>> 4GB Samsung.
>>
>> The error messages are as follows:
>>
>> UBI error: ubi_io_write: error -5 while writing 2048 bytes to PEB 
>> 5812:12288, written 0 bytes
>> UBI warning: ubi_eba_write_leb: failed to write data to PEB 5812
>> UBI: recover PEB 5812, move data to PEB 19400
>> UBI error: ubi_io_read: error -74 while reading 512 bytes from PEB 
>> 5812:512, read 512 bytes
>> UBI error: ubi_io_write: error -5 while writing 512 bytes to PEB 
>> 19400:512, written 0 bytes
>> UBI warning: recover_peb: failed to write to PEB 19400
>> UBI: try again
>> UBI: recover PEB 5812, move data to PEB 19401
>> UBI: run torture test for PEB 19400
>> UBI error: ubi_io_write: error -5 while writing 512 bytes to PEB 
>> 19401:512, written 0 bytes
>> UBI warning: recover_peb: failed to write to PEB 19401
>> UBI: try again
>> UBI: recover PEB 5812, move data to PEB 19402
>> UBI error: ubi_io_write: error -5 while writing 512 bytes to PEB 
>> 19402:512, written 0 bytes
>> UBI warning: recover_peb: failed to write to PEB 19402
>> UBI: try again
>> UBI: recover PEB 5812, move data to PEB 19403
>> UBI error: ubi_io_write: error -5 while writing 512 bytes to PEB 
>> 19403:512, written 0 bytes
>> UBI warning: recover_peb: failed to write to PEB 19403
>> UBI warning: ubi_ro_mode: switch to read-only mode
>> UBIFS error (pid 1149): ubifs_wbuf_write_nolock: cannot write 2522 
>> bytes to LEB 389:10240, error -5
>> UBIFS warning (pid 1149): ubifs_ro_mode: switched to read-only mode, 
>> error -5
>> UBIFS error (pid 1149): do_writepage: cannot write page 0 of inode 
>> 30708, error -5
>> UBIFS error (pid 1149): make_reservation: cannot reserve 858 bytes in 
>> jhead 2, error -30
>> UBIFS error (pid 1149): do_writepage: cannot write page 2 of inode 
>> 29486, error -30
>> UBIFS error (pid 1149): make_reservation: cannot reserve 721 bytes in 
>> jhead 2, error -30
>> UBIFS error (pid 1149): do_writepage: cannot write page 1 of inode 
>> 30070, error -30
>> UBI error: ubi_io_write: error -5 while writing 2048 bytes to PEB 
>> 5022:88064, written 0 bytes
>> UBI warning: ubi_eba_write_leb: failed to write data to PEB 5022
>> UBI: recover PEB 5022, move data to PEB 19404
>> UBI error: ubi_io_read: error -74 while reading 512 bytes from PEB 
>> 5022:512, read 512 bytes
>> UBI error: ubi_io_write: read-only mode
>> UBI warning: recover_peb: failed to write to PEB 19404
>> UBI: try again
>> UBI: recover PEB 5022, move data to PEB 19405
>> UBI error: ubi_io_write: read-only mode
>> UBI warning: recover_peb: failed to write to PEB 19405
>> UBI: try again
>> UBI: recover PEB 5022, move data to PEB 19406
>> UBI error: ubi_io_write: read-only mode
>> UBI warning: recover_peb: failed to write to PEB 19406
>> UBI: try again
>> UBI: recover PEB 5022, move data to PEB 19407
>> UBI error: ubi_io_write: read-only mode
>> UBI warning: recover_peb: failed to write to PEB 19407
>> UBIFS error (pid 1044): ubifs_wbuf_sync_nolock: cannot write 2048 
>> bytes to LEB 788:86016
>> UBIFS error (pid 1044): ubifs_bg_wbufs_sync: cannot sync 
>> write-buffer, error -30
>> UBIFS warning (pid 1044): ubifs_ro_mode: switched to read-only mode, 
>> error -30
>> UBI error: ubi_io_write: error -5 while writing 2048 bytes to PEB 
>> 5817:26624, written 0 bytes
>> UBI warning: ubi_eba_write_leb: failed to write data to PEB 5817
>> UBI: recover PEB 5817, move data to PEB 19408
>> UBI error: ubi_io_read: error -74 while reading 512 bytes from PEB 
>> 5817:512, read 512 bytes
>> UBI error: ubi_io_write: read-only mode
>> UBI warning: recover_peb: failed to write to PEB 19408
>> UBI: try again
>> UBI: recover PEB 5817, move data to PEB 19409
>> UBI error: ubi_io_write: read-only mode
>> UBI warning: recover_peb: failed to write to PEB 19409
>> UBI: try again
>> UBI: recover PEB 5817, move data to PEB 19410
>> UBI error: ubi_io_write: read-only mode
>> UBI warning: recover_peb: failed to write to PEB 19410
>> UBI: try again
>> UBI: recover PEB 5817, move data to PEB 19411
>> UBI error: ubi_io_write: read-only mode
>> UBI warning: recover_peb: failed to write to PEB 19411
>> UBIFS error (pid 1047): ubifs_wbuf_sync_nolock: cannot write 2048 
>> bytes to LEB 385:24576
>> UBIFS error (pid 1047): ubifs_bg_wbufs_sync: cannot sync 
>> write-buffer, error -30
>> UBIFS error (pid 1149): make_reservation: cannot reserve 160 bytes in 
>> jhead 1, error -30
>> UBIFS error (pid 1149): ubifs_write_inode: can't write inode 30709, 
>> error -30
>> UBIFS error (pid 1149): make_reservation: cannot reserve 160 bytes in 
>> jhead 1, error -30
>> UBIFS error (pid 1149): ubifs_write_inode: can't write inode 30710, 
>> error -30
>> UBIFS error (pid 1149): make_reservation: cannot reserve 160 bytes in 
>> jhead 1, error -30
>> UBIFS error (pid 1149): ubifs_write_inode: can't write inode 30698, 
>> error -30
>> UBIFS error (pid 1149): make_reservation: cannot reserve 160 bytes in 
>> jhead 1, error -30
>> UBIFS error (pid 1149): ubifs_write_inode: can't write inode 30711, 
>> error -30
>>
>> I'd appreciate any hints on what can cause this. Is it a hardware 
>> problem, mtd layer problem
>> or UBI problem ?
>
> It sounds like you are saying one MTD partition somehow affects another.
> You should check the MTD partitions are set up correctly.  Are you using
> tools that make assumptions about which mtd partition is which?
>
> How do you erase the NOR flash?  Is the device node (/dev/mtd...) 
> correct?
I can also reproduce the problem by reading from NOR, i.e.

dd if=/dev/mtd4 of=/dev/null

Felix.
>
>
>
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