Hello,

I'm running a 2.6.28 Linux kernel with Yaffs2(checked out 04/22/2009). Were 
using a 512 MB (2K sector) nand flash chip and I'm currently in the testing 
phase. I've found if I transfer large files (approx 400MB) I get the following 
errors when I remount the Yaffs filesystem.

uncorrectable error : <3>end_request: I/O error, dev mtdblock3, sector 0
__ratelimit: 11 callbacks suppressed
Buffer I/O error on device mtdblock3, logical block 0
uncorrectable error : <3>end_request: I/O error, dev mtdblock3, sector 8
Buffer I/O error on device mtdblock3, logical block 1
uncorrectable error : <3>end_request: I/O error, dev mtdblock3, sector 16
Buffer I/O error on device mtdblock3, logical block 2
uncorrectable error : <3>end_request: I/O error, dev mtdblock3, sector 24
Buffer I/O error on device mtdblock3, logical block 3
uncorrectable error : <3>end_request: I/O error, dev mtdblock3, sector 32
Buffer I/O error on device mtdblock3, logical block 4
uncorrectable error : <3>end_request: I/O error, dev mtdblock3, sector 40
Buffer I/O error on device mtdblock3, logical block 5
uncorrectable error : <3>end_request: I/O error, dev mtdblock3, sector 48
Buffer I/O error on device mtdblock3, logical block 6
uncorrectable error : <3>end_request: I/O error, dev mtdblock3, sector 56
Buffer I/O error on device mtdblock3, logical block 7
uncorrectable error : <3>end_request: I/O error, dev mtdblock3, sector 64
Buffer I/O error on device mtdblock3, logical block 8
uncorrectable error : <3>end_request: I/O error, dev mtdblock3, sector 72
Buffer I/O error on device mtdblock3, logical block 9
uncorrectable error : <3>end_request: I/O error, dev mtdblock3, sector 80
uncorrectable error : <3>end_request: I/O error, dev mtdblock3, sector 88
uncorrectable error : <3>end_request: I/O error, dev mtdblock3, sector 96
uncorrectable error : <3>end_request: I/O error, dev mtdblock3, sector 104
uncorrectable error : <3>end_request: I/O error, dev mtdblock3, sector 112
uncorrectable error : <3>end_request: I/O error, dev mtdblock3, sector 120
uncorrectable error : <3>end_request: I/O error, dev mtdblock3, sector 128
uncorrectable error : <3>end_request: I/O error, dev mtdblock3, sector 0
uncorrectable error : <3>end_request: I/O error, dev mtdblock3, sector 528
uncorrectable error : <3>end_request: I/O error, dev mtdblock3, sector 528
uncorrectable error : <3>end_request: I/O error, dev mtdblock3, sector 528

The large file reads back correctly though(no data corruption). Has anyone else 
seen any similiar failures or have any pointers? I've turned on Yaffs tracing 
but it's no help seeing as though these messages are not coming from Yaffs...


I'm not sure if MTD would be a more appropriate list to post this to...?

-- 
Best Regards,
________________________________________________________________
  Eddie Dawydiuk, Technologic Systems | voice:  (480) 837-5200
  16525 East Laser Drive 	     | fax:    (480) 837-5300
  Fountain Hills, AZ 85268            | web: www.embeddedARM.com