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Ecc Error Unfixed On Chunk
Style DragonBox Pyra Contact Us Help Newsletter Subscribe Home Top RSS Terms and Rules Forum software by XenForo™ ©2010-2016 XenForo Ltd. Don't worry about it unless the device starts becoming unstable. If you can, then diff the old and new mtd to check what changes might be impacting on the problem. -- Charles Thread at a glance: Next Message by Date: yaffs1/2 Would it help to modify yaffs2 to automatically handle the yaffs1 case? navigate here
However the message text does not match the latest. PATCH!!! (Was Sorry state of YAFFS2)Re: [Yaffs] PATCH!!! gen ! nz> Date: 2007-01-19 4:05:29 Message-ID: 200701191705.29309.manningc2 () actrix ! other
Now I switched to latest CVS yaffs2 (in yaffs1 mode) + latest CVS MTD patched for uClinux 2.4.31. It's not a problem for me at the moment, but I suspect it will be in the near future. Also, the file system gph use in 2.0 is particularly noisy about such "errors". Visit the Trac open source project athttp://trac.edgewall.com/
uide_e.pdf "There is one question that often comes up Is ECC really necessary? After all, the likeliest cause of a bit error is during the programming process. For systems > with mixed nand builds (we have 32MB boards using 512b to 384MB using 3 > 1GBit 2k) a single kernel is often desireable for production. However the message text does not match the latest. NAND flash is quite lossy by nature, so blocks need to be remapped on an ongoing basis either by the driver or by the filesystem.
Nick There are probably quite a few people with the requirement of one firmware supporting both 512 and 2k NAND board variants. There have been some changes regarding ECC checking in mtd recently so these could be a factor. Top dtaubert Topic Author Posts: 97 Joined: Wed Sep 15, 2004 3:06 pm Quote #3 Tue Oct 19, 2004 12:30 pm Is the onboard flash NAND or NOR based? https://pyra-handheld.com/boards/threads/ecc-errors-in-dmesg.27776/ I wrote my own driver to interface the nand flash in MTD.
Yes, my password is: Forgot your password? These errors I've received just at the mount > procedure, or when I'm trying to do, for example, ls. XenForo Add-ons by Brivium ™ © 2012-2016 Brivium LLC. i have established a jffs2 > > filesystem as root filesystem in nor flash with 32M ,my sytem is ok if > > only use nor flash .
If you are using mkyaffs to initialise a partition then I suggest you start off working with an empty partition. It stills begs the question: how did I end up with so many active bad blocks? Would it help to modify yaffs2 to automatically handle the yaffs1 case? Derek Top RokuAnthony El Jefe Posts: 703 Joined: Fri Aug 20, 2004 12:44 pm Location: Palo Alto, CA USA Contact: Contact RokuAnthony Website Quote #2 Tue Oct 19, 2004 11:55
Given that /dev/mtdblock/2 is in active use by the system, what's the expected MTTF for the onboard flash? Allocator out !!!!!!!!!!!!!!!!! > > ......................................... > > then i try to exc command "df" > > /mnt # df > > Filesystem 1k-blocks Used Available Use% Mounted on > > The messages are saying that a chunk was read, and ecc errors were found. i boot my board using jffs2 filesystem as root filesystem > > # cat /proc/mtd > > dev: size erasesize name > > mtd0: 03c00000 00020000 "User11 FS" > > mtd1:
Only one of them should do the checking. Learn More. It seems awfully quick to get such errors on a brand new device :/ stragulus, Jun 13, 2006 #1 Squidge Certified Guru Joined: Nov 16, 2003 Messages: 8,495 Location: UK OK the first thing is to ensure you are using the latest yaffs source.
I try to compared with previous versions, and nspare.eccres2==nspare.eccres1==0 for chunk 32. using the tools "flash_eraseall /dev/mtd6 ",passed > > > > 3. # mount -tyaffs /dev/mtdblock4 /mnt/ > > yaffs: dev is 32505860 name is "mtdblock4" > > yaffs: Attempting MTD mount I can infer from what you write below that you are using YAFFS2 code with backward compatability to yaffs1.
There have been some changes regarding ECC checking in mtd recently so these could be a factor.
Allocator out !!!!!!!!!!!!!!!!! > > ...... > > ** > >mtd ecc error unfixed on chunk 1375:0 > > ** > >mtd ecc error unfixed on chunk 1375:1 > > ** ie something along the lines of: sniff mtd if mtd page size == 512 then yaffs1 handling else yaffs2 handling That should be pretty straight forward to do and would save then there are erros when copying data to mnt's directory > > the questions : > > when copy less 120k data , no errors,and the data is correct after i Anyclues what > > could be wrong .. > > Any help will be highly appreciated. > > > > > > regards > > > > please help me out
The problem is almost certainly due to a disagreement between yaffs and mtd over who is doing the ECC checking. ie something along the lines of: sniff mtd if mtd page size == 512 then yaffs1 handling else yaffs2 handling That should be pretty straight forward to do and would save PATCH!!! (Was Sorry state of YAFFS2)[Yaffs] yaffs1/2 autodetect ideaStoneboat Mailing List Archive administrated by JennyLurker (version 2.3) [Yaffs] ecc error unfixed on chunkCatalàDanskDeutschΕλληνικάEnglishEspañolsuomiFrançaisGalegomagyarItaliano日本語NederlandsPolskiPortuguêsPortuguês BrasileiroEz az üzenet a következő szál része:a teljes I downloaded the newest yaffs2 code from > > "http://www.aleph1.co.uk/cgi-bin/viewcvs.cgi/yaffs" and place it to linux > > kernel 2.6.11.
GBiz is too! Latest News Stories: Docker 1.0Heartbleed Redux: Another Gaping Wound in Web Encryption UncoveredThe Next Circle of Hell: Unpatchable SystemsGit 2.0.0 ReleasedThe Linux Foundation Announces Core Infrastructure When I type dmesg, I see a lot of this: **>>ecc error unfixed on chunk 1089:0 **>>ecc error unfixed on chunk 1089:1 **>>Block 34 marked for retirement **>>ecc error unfixed on Check out the latest downloadable searchcode server release published under fair source. A NAND-flash specific file system. * * Copyright (C) 2002-2010 Aleph One Ltd. * for Toby Churchill Ltd and Brightstar Engineering * * Created by Charles Manning * * This
Derek Top RokuGreg Roku Engineering Posts: 110 Joined: Wed Sep 01, 2004 8:22 am Location: Arkansas Contact: Contact RokuGreg Website Re: bad blocks Quote #5 Tue Oct 19, 2004 1:44