Hi

Thanks for that.

From what I see, it appears that this is not causing any problematic behaviour 
and those YBUG()s are really warnings of unexpected conditions that need some 
more investigation.

There are various versions of bonnie lying around. Can you tell me which one 
you're using?


Thanks

-- CHarles



On Thursday 22 January 2009 22:56:10 yi li wrote:
> Hi,
>
> I run bonnie++ ver1.94 on Linux-2.6.28 on Yaffs2/Nand. The yaffs2 is
> downloaded from CVS (Jan 22, 2009).
> I am testing on ADI BF548-Ezkit. While running bonnie++ file operation
> tests, there is bug triggered while doing deleting testing.
> What is the cause of this bug?
>
> root:/> flash_eraseall /dev/mtd4
> Erasing 128 Kibyte @ 7e60000 -- 50 % complete.
> Skipping bad block at 0x07e80000
>
> Skipping bad block at 0x07ea0000
> Erasing 128 Kibyte @ fc00000 -- 100 % complete.
> root:/> mount -t yaffs2 /dev/mtdblock4 /mnt/
> yaffs: dev is 32505860 name is "mtdblock4"
> yaffs: passed flags ""
> yaffs: Attempting MTD mount on 31.4, "mtdblock4"
> block 1013 is bad
> block 1014 is bad
> yaffs_read_super: isCheckpointed 0
> root:/> bonnie++ -u root -d /mnt -s 0
> Using uid:0, gid:0.
> Create files in sequential order...
> save exit: isCheckpointed 1
> done.
> Stat files in sequential order...done.
> Delete files in sequential order...==>> yaffs bug: fs/yaffs2/yaffs_guts.c
> 6832 ==>> yaffs bug: fs/yaffs2/yaffs_guts.c 6759
> ==>> yaffs bug: fs/yaffs2/yaffs_guts.c 6759
> save exit: isCheckpointed 1
> done.
> Create files in random order...save exit: isCheckpointed 1
> done.
> Stat files in random order...done.
> Delete files in random order...==>> yaffs bug: fs/yaffs2/yaffs_guts.c 6832
> ==>> yaffs bug: fs/yaffs2/yaffs_guts.c 6759
> ==>> yaffs bug: fs/yaffs2/yaffs_guts.c 6759
> save exit: isCheckpointed 1
> done.
> Version  1.94       ------Sequential Create------ --------Random
> Create-------- blackfin            -Create-- --Read--- -Delete-- -Create--
> --Read--- -Delete-- files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
>  /sec %CP 16   101  97  4357  76   473  59   100  97  8677 100   230  80
> Latency             24000us   16000us   24000us   24000us    4000us  
> 31999us
>
> More information on the system:
> root:/> cat /proc/yaffs
> YAFFS built:Jan 22 2009 11:46:45
> $Id: yaffs_fs.c,v 1.71 2009/01/22 00:45:54 charles Exp $
> $Id: yaffs_guts.c,v 1.74 2009/01/18 23:24:08 charles Exp $
>
> Device 0 "file system(nand)"
> startBlock......... 0
> endBlock........... 2015
> totalBytesPerChunk. 2048
> nDataBytesPerChunk. 2048
> chunkGroupBits..... 0
> chunkGroupSize..... 1
> nErasedBlocks...... 1504
> nReservedBlocks.... 5
> blocksInCheckpoint. 1
> nTnodesCreated..... 16400
> nFreeTnodes........ 16400
> nObjectsCreated.... 16500
> nFreeObjects....... 16396
> nFreeChunks........ 128832
> nPageWrites........ 0
> nPageReads......... 0
> nBlockErasures..... 1036
> nGCCopies.......... 513
> garbageCollections. 784
> passiveGCs......... 784
> nRetriedWrites..... 0
> nShortOpCaches..... 10
> nRetireBlocks...... 0
> eccFixed........... 0
> eccUnfixed......... 0
> tagsEccFixed....... 0
> tagsEccUnfixed..... 0
> cacheHits.......... 0
> nDeletedFiles...... 0
> nUnlinkedFiles..... 65540
> nBackgroudDeletions 0
> useNANDECC......... 1
> isYaffs2........... 1
> inbandTags......... 0
>
> About the Nand flash:
> BF5xx on-chip NAND FLash Controller Driver, Version 1.2 (c) 2007
> Analog Devices, Inc.
> bf5xx-nand bf5xx-nand.0: page_size=256, data_width=8, wr_dly=3, rd_dly=3
> NAND device: Manufacturer ID: 0x20, Chip ID: 0xda (ST Micro NAND
> 256MiB 3,3V 8-bit)
> Creating 2 MTD partitions on "NAND 256MiB 3,3V 8-bit":
> 0x00000000-0x00400000 : "linux kernel(nand)"
> 0x00400000-0x10000000 : "file system(nand)"
>
> Regards,
>
> -Yi
>
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