[Yaffs] [yaffs file system in linux system] Why do exist it …

hello sir.?
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We has been used to yaffs file system.?
I found error. But I don??t know error.?
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System features.?
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-       Base on linux 2.4?
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-       Using yaffs file system?
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-       Using nand flash memory?
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Step 1. Recording files.?
I recorded files in yaffs file system.?
Recorded file list In directory ( /mnt/hello ) , using yaffs file system?
Test1-name.mp3?
Test2-name.mp3?
Test3-name.mp3?
Test4-name.mp3?
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Step 2. When problems occur.?
When problems occur in yaffs file system.?
The name of files has been cut in directory.?
The Cutting name of files exist.?
Recorded file list in directory (/mnt/hello)?
Test1-na?
Test1-name.mp3?
Test2-nam?
Test2-name.mp3?
Test3-na?
Test3-name.mp3?
Test4-name.?
Test4-name.mp3?
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Why do exist it cutting name of files??
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You will know to exist cutting name of files.?
And you will help me.?
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If you know, please send e-mail to me.?
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Thank you.?
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[yaff information]?
linux#] cat /proc/yaffs?
YAFFS built:Feb 21 2007 14:42:15?
$Id: yaffs_fs.c,v 1.9 2005/07/19 20:41:59 charles Exp $?
$Id: yaffs_guts.c,v 1.31 2006/03/08 07:59:20 charles Exp $?
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Device yaffs?
startBlock......... 0?
endBlock........... 1023?
chunkGroupBits..... 0?
chunkGroupSize..... 1?
nErasedBlocks...... 4?
nTnodesCreated..... 2500?
nFreeTnodes........ 2?
nObjectsCreated.... 200?
nFreeObjects....... 23?
nFreeChunks........ 185?
nPageWrites........ 0?
nPageReads......... 2?
nBlockErasures..... 0?
nGCCopies.......... 0?
garbageCollections. 0?
passiveGCs......... 0?
nRetriedWrites..... 0?
nRetireBlocks...... 0?
eccFixed........... 0?
eccUnfixed......... 0?
tagsEccFixed....... 0?
tagsEccUnfixed..... 0?
cacheHits.......... 0?
nDeletedFiles...... 1?
nUnlinkedFiles..... 1?
nBackgroudDeletions 0?
useNANDECC......... 0?
isYaffs2........... 0?