Hi,<br>I have tried to use yaffs2 from the last android&#39;s fs/yaffs directory with 2.6.24 kernel.<br>And I have some problems with it.<br>There is jffs2 on first partition (mtdblock0), which works well enough. From it I try to erase second partition (mtdblock1) with flash_eraseall tool and copy&nbsp; necessary boot files there. Then I try to boot from second partition and system booted well. After several reboots (or some operations with files) yaffs2 looses&nbsp; capability to restore from checkpoint and i can see tragedies, such as:<br>
<br>yaffs tragedy: Bad object type, -409329664 != 1, for object 512 at chunk 33931 during scan<br>yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found.<br>yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found.<br>
yaffs tragedy: Bad object type, 2 != 3, for object 277 at chunk 293 during scan<br>yaffs tragedy: Bad object type, 2 != 3, for object 265 at chunk 269 during scan<br><br>In most cases system is bootable after that, but yaffs2 can&#39;t restore from checkpoint any more. If i only try to reboot errors may stay in this state (i see identical numbers of chunks etc.) and system is bootable. After some experiments with file operations (add/remove) or turn off power with out umount root fs,&nbsp; files/directories started to vanish after next reboot. And in one try system is able to boot, but in anther it cant find some system file. I cant detect clear dependences.<br>
When i look at checkpoint debug logs, i see that (when yaffs try to restore) first checkpoint block it reads without any errors and (in most cases) second checkpoint block is not correct (i think so, because it isnt idential to writed data) and restore process interrupted. In what direction i have to research ?<br>
And maybe silly q, i copy 21 mb dir (~3k objects) from jffs2 partition to yaffs2 patition and get 77mb on yaffs2 partition is it ok?<br>Sorry for my English, Lebedev Dmitriy. <br>