Re: [Yaffs] yaffs tradgedy on every other boot

On Wednesday 28 November 2007 11:37:41 Wookey wrote:
> I have 2 demo balloon board. After a few cycles of yanking the power
> to reset andcheck they worked as expected both are poorly. YAFFS seems
> to be the problem.
>
>
> Both boards programmed with the code at:
> http://balloonboard.org/files/balloon3/distro/test-v0.3/
> (Balloon3, pxa270, 1GB 2K nand, kernel 2.6.22.2)
>
>
> Board 1:
> --------
>
> Power up the machine and it works - 2 bad blocks reported.
>
> cat /proc/yaffs says:
>
> balloon:~# cat /proc/yaffs
> YAFFS built:Sep 7 2007 02:33:15
> $Id: yaffs_fs.c,v 1.59 2007/03/20 20:59:40 charles Exp $
> $Id: yaffs_guts.c,v 1.48 2007/03/12 20:55:39 charles Exp $
>
> Device 0 "Root fs"
> startBlock......... 0
> endBlock........... 8159
> chunkGroupBits..... 0
> chunkGroupSize..... 1
> nErasedBlocks...... 5746
> nTnodesCreated..... 14900
> nFreeTnodes........ 327
> nObjectsCreated.... 10800
> nFreeObjects....... 5
> nFreeChunks........ 413048
> nPageWrites........ 0
> nPageReads......... 0
> nBlockErasures..... 0
> nGCCopies.......... 0
> garbageCollections. 0
> passiveGCs......... 0
> nRetriedWrites..... 0
> nRetireBlocks...... 0
> eccFixed........... 0
> eccUnfixed......... 0
> tagsEccFixed....... 0
> tagsEccUnfixed..... 0
> cacheHits.......... 5134
> nDeletedFiles...... 383
> nUnlinkedFiles..... 440
> nBackgroudDeletions 0
> useNANDECC......... 1
> isYaffs2........... 1
>
> reboot and every single one of the first 8160 blocks has 'erase error'
> amnd is then declared bad. We get a yaffs tragedy, and the rootfs
> fails to mount (so I can't get much in the way of diagnostics)

When you say 'every block has an erase error', what do you mean? Is mtd
reporting the erase error?


>
> (sorry no log of that right now)
>
> Any clues for further diagnostics?

Try turning on more tracing

Try disabling checkpointing.

>
>
> Board2:
> -------
>
> Works, but takes over 5 mins to mount the FS. (pauses for several
> minutes before issuing the 'restored from Checkpoint' message)
>
> When it eventually boots:
> balloon:/home/demo# cat /proc/yaffs
> YAFFS built:Sep 7 2007 02:33:15
> $Id: yaffs_fs.c,v 1.59 2007/03/20 20:59:40 charles Exp $
> $Id: yaffs_guts.c,v 1.48 2007/03/12 20:55:39 charles Exp $
>
> Device 0 "Root fs"
> startBlock......... 0
> endBlock........... 8159
> chunkGroupBits..... 0
> chunkGroupSize..... 1
> nErasedBlocks...... 3557
> nTnodesCreated..... 26200
> nFreeTnodes........ 88
> nObjectsCreated.... 16400
> nFreeObjects....... 12
> nFreeChunks........ 309681
> nPageWrites........ 0
> nPageReads......... 0
> nBlockErasures..... 0
> nGCCopies.......... 0
> garbageCollections. 0
> passiveGCs......... 0
> nRetriedWrites..... 0
> nRetireBlocks...... 0
> eccFixed........... 0
> eccUnfixed......... 0
> tagsEccFixed....... 0
> tagsEccUnfixed..... 0
> cacheHits.......... 3890
> nDeletedFiles...... 1349
> nUnlinkedFiles..... 2778
> nBackgroudDeletions 0
> useNANDECC......... 1
> isYaffs2........... 1
>
>
> Wookey