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I/o Error Dev Mtdblock0

OpenWrt →General Discussion →i/o error on mtdblock0 and mtdblock4, is it the uboot partition? The error messages you see are due to the FS module detecting bad blocks. dmesg | grep error Code: end_request: I/O error, dev mtdblock6, sector 0 Buffer I/O error on device mtdblock6, logical block 0 end_request: I/O error, dev mtdblock6, sector 8 Buffer I/O error This is an RT-AC66U.

OK. 2. During boot, I see a lot of i/o errors, but everything appears to work normally. On the NAND, we recently found an issue related to the ECC calculation, and you may need to reflash/reformat your NAND device to get the ECC data back in order. Is this normal? >> >> Here is some (clipped) dmesg output: >> >> EXT3-fs (mmcblk0p2): mounted filesystem with writeback data mode >> VFS: Mounted root (ext3 filesystem) on device 179:2. >> https://newit.co.uk/forum/index.php?topic=234.0

If I access mtdblock0 (e.g. "hexdump -C -n 64 /dev/mtdblock0", gives me the following errors: end_request: I/O error, dev mtdblock0, sector 0Buffer I/O error on device mtdblock0, logical block 0end_request: I/O It might make sense to try to bisect from where you were to your current revision. Is this a problem? Thank you Merlin.

Logged c128 Newbie Posts: 18 Re: end_request: I/O error, dev mtdblock0 « Reply #8 on: 30 December 2012, 12:36:32 pm » Just found this thread after experiencing a similar problem...To echo RE: mtdblock kernel crash - Added by Zoltan Csizmadia over 5 years ago I have the mtdblock0 write problem (read is ok), and I have the SPI crash when writing mtdblocks Newer Than: Search this thread only Search this forum only Display results as threads Useful Searches Recent Posts More... Julio Urquidi posted Oct 18, 2016 at 5:28 AM Can't connect to T-Mobile...

I know that to build the kernel with my .config takes time. Hi all,Recently on my netgear wndr4300, I started getting the following errors and the 5G radio stopped working...[ 10.320000] end_request: I/O error, dev mtdblock0, sector 128[ 10.320000] Buffer I/O error on I am certain its zoneminder and its demands causing the crash, and not the intergrity of the sdcard. Couple more questions, if you don't mind....

This is with kernel 3.6.10. panhead20, Mar 29, 2013 #3 RMerlin Part of the Furniture Joined: Apr 14, 2012 Messages: 20,169 Location: Canada panhead20 said: ↑ Thank you Merlin. Since mtdblock0 refers to the NAND, my thought process is the same as yours and I've been ignoring them. During boot, I see a lot of i/o errors, but everything appears to work normally.

Since mtdblock0 refers to the NAND, my thought process is the same as yours and I've been ignoring them. That shouldn't cause a kernel crash, however. Were there specific changes that you needed to cause you to pull in the updates? -Mike RE: mtdblock kernel crash - Added by Zoltan Csizmadia over 5 years ago Mike, I'm RPC: Registered tcp transport module.

There were a couple of patches to the (linus) mainline regarding the SPI drivers that may be impacting your use case (there was a problem with 65535 or more byte accesses, The unsigned version is only used when doing a USB or serial boot. The description of the problem is mostly to capture this so we don't re-investigate it again sometime later... :^) -Mike Description Of Problem:The reason for the oops on the write access Do you happen to know what git revision you were using when life was good?

The character device layer uses kmalloc (DMA'able buffers) and will naturally bust up larger requests, but you need to manage the erasing. Welcome! Innovate TI Live @... mv_xor_shared mv_xor_shared.0: Marvell shared XOR driver mv_xor_shared mv_xor_shared.1: Marvell shared XOR driver mv_xor mv_xor.0: Marvell XOR: ( xor cpy ) mv_xor mv_xor.1: Marvell XOR: ( xor fill cpy ) mv_xor mv_xor.2:

I'll just ignore it for now, and eventually figure out how to get it to not try to be auto mounted. But those changes were made for my previous kernel revision. I haven't (yet?) observed any adverse side effects.

I'm using the console filesystem >> image. >> >> During boot, I see a lot of i/o errors, but everything appears to work >> normally.

Freeing initrd memory: 4592K Installing knfsd (copyright (C) 1996 [email protected]). May be constantly updating logs were there ?I see its not about u-boot but can be related to other broken region 5 Reply by nijhawank 2016-02-29 17:03:23 nijhawank Member Offline Registered: NR_IRQS:114 Console: colour dummy device 80x30 Calibrating delay loop... 1192.75 BogoMIPS (lpj=5963776) pid_max: default: 32768 minimum: 301 Mount-cache hash table entries: 512 CPU: Testing write buffer coherency: ok NET: Registered protocol Top Display posts from previous: All posts1 day7 days2 weeks1 month3 months6 months1 year Sort by AuthorPost timeSubject AscendingDescending Post Reply Print view 3 posts • Page 1 of 1 Return

This means that mtdblock does not try to do any optimizations, and that you will lose lots of data in case of power cuts. This is an RT-AC66U. What's going on? Given we can reproduce the problems here, I don't think it makes sense to send you an Image -- it's not a build issue.

What seems odd is you are reporting a problem with the NAND access as well as with SPI FLASH access. Reply Quote Newer Topic Older Topic Print View RSS Author: Your Email: Subject: Help informationBBcode help Spam prevention:Please, enter the code that you see below in the input field. Andrew ------------------------------------------------------------------------------ _______________________________________________ gumstix-users mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gumstix-users coderdrone Reply | Threaded Open this post in threaded view ♦ ♦ | Report Content as Inappropriate ♦ ♦ Re: i/o Please login or register. : CubieBoard 2 and Cubietruck both now in stock.

Best regards, Zoltan dmesg.txt (6.67 KB) .config (38.8 KB) Replies (13) RE: mtdblock kernel crash - Added by Zoltan Csizmadia over 5 years ago This is what I did to crash I'm getting the same error messages quite often on my SD cards.  It doesn't seem to happen on every single boot of a given SD card though.  I am assuming that Best Regards Bendney Yu Expert 1420 points Bendney Yu Jul 20, 2013 3:06 PM Reply Cancel Cancel Reply Suggest as Answer Use rich formatting 1 Reply Expert 1420 points Bendney http://www.sendspace.com/file/9t7f28 Now everything works well and for me it's not a problem using the device path because I only have one USB drive attached.

If I try to write into the spi flash I get the following kernel crash:Kernel BUG at arch/arm/mm/dma-mapping.c:409!Unable to handle kernel NULL pointer dereference at virtual address 00000000pgd = c0004000[00000000] *pgd=00000000Internal This is wrong in most cases. While you're at it, please check out SmallNetBuilder for product reviews and our famous Router Charts, Ranker and plenty more! Or did you pull a clean copy of the kernel down? -Mike RE: mtdblock kernel crash - Added by Zoltan Csizmadia over 5 years ago Mike, It was a clean copy.

RSS Feeds All Threads News Only Most Popular Routers #1 #2 #3 #4 #5 Hot On SmallNetBuilder The Best Way To Get Whole House Wireless Coverage Mesh Mashup Redux - NETGEAR's I have no clue why that's happening. I'll do it later. RE: mtdblock kernel crash - Added by Michael Williamson over 5 years ago Oh, if you need an /dev/mtdx device, you need to enable in the kernel: CONFIG_MTD_CHAR Should be in

Jump to forum: News General Discussion Developers Only Community Documentation Community Releases / Announcements Hardware Hacking (un)wanted hardware WhiteRussian NetGear DG834G GIGABYTE Powered by PunBB, supported by Informer Technologies, Inc. help! Please login or register. Why would the errors only be reported if I enable a swap partition?

Everything is linked into the kernel. (of course only stock kernel components) Nothing touches the SPI engine. (Note: you've mentioned "dd if=/dev/mtd0 | od", the read is fine for me as