Hi ,
Thanks for your continued co-operation and support.
With suggestions from yourside , I did the modification at low level
drivers.
Now I am not seeing any YAFFS error message during mounting. I can see *
lost+found* in mounted directory.
Command #cat /proc/yaffs gives the following results:
* #cat /proc/yaffs*
YAFFS built:Jan 21 2010 20:23:59
$Id: yaffs_fs.c,v 1.58 2007/02/14 01:09:06 wookey Exp $
$Id: yaffs_guts.c,v 1.47 2007/02/14 01:09:06 wookey Exp $
Device 0 "Linux Image"
startBlock......... 0
endBlock........... 15
chunkGroupBits..... 0
chunkGroupSize..... 1
nErasedBlocks...... 9
nTnodesCreated..... 0
nFreeTnodes........ 0
nObjectsCreated.... 200
nFreeObjects....... 94
nFreeChunks........ 639
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.......... 0
nDeletedFiles...... 0
*nUnlinkedFiles..... 0
*nBackgroudDeletions 0
useNANDECC......... 1
isYaffs2........... 1
Now I gave the following commands
*#cd /mnt*
*#mkdir abc*
Gives the error message as
mkdir: cannot create directory 'abc': Cannot allocate memory
*#cat /proc/yaffs*
YAFFS built:Jan 21 2010 20:23:59
$Id: yaffs_fs.c,v 1.58 2007/02/14 01:09:06 wookey Exp $
$Id: yaffs_guts.c,v 1.47 2007/02/14 01:09:06 wookey Exp $
Device 0 "Linux Image"
startBlock......... 0
endBlock........... 15
chunkGroupBits..... 0
chunkGroupSize..... 1
nErasedBlocks...... 9
nTnodesCreated..... 0
nFreeTnodes........ 0
nObjectsCreated.... 200
nFreeObjects....... 94
nFreeChunks........ 639
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.......... 0
nDeletedFiles...... 0
*nUnlinkedFiles..... 1*
nBackgroudDeletions 0
useNANDECC......... 1
isYaffs2........... 1
every time when I create a directry/file, value of *nUnlinkedFiles* is
changing but I can not see the folders/files in mounted dicertory.
Thanks in advance.
Regards,
Saquib Herman
On Thu, Jan 21, 2010 at 3:29 AM, Charles Manning <
manningc2@actrix.gen.nz>wrote:
> Try turning on all tracing, including tracing in the mtd.
>
> Also:
> 1) What does 'cat /rpoc/mtd' show?
> 2) What does dmesg show when you do the mount?
> 3) Did you erase the flash?
>
> If you are getting a 'no more erased blocks' message then that means all
> the
> blocks were either full or bad. Try to erase the flash and see if that
> fixes
> things. If not, then there is alikely a problem in the bad block handling
> or
> spare area handling in your mtd.
>
> -- Charles
>
> On Thursday 21 January 2010 03:32:47 Saquib wrote:
> > Hi,
> >
> > Thanks for your continued support and cooperation.
> >
> > On MTD partition size of 2MB, I am trying to mount the YAFFS2.
> >
> > Steps are as follows:
> >
> > (1) First I have written the low level driver to access NAND flash.
> > (2) Hook-up all the low level functions to fill MTD structures.
> > (3) Then I'd given the command to create block device
> > #mknod -m 777 /dev/mtdblock0 b 31 0
> > (4) #mkdir /mnt
> > (5) #mount -t yaffs2 /dev/mtdblock0 /mnt
> > (6) In /mnt folder i can see lost+found
> > (7) While trying to create directory or file could see the following
> error
> > "*yaffs tragedy: no more eraased blocks*"
> >
> > On doing the # cat /proc/yaffs can see the below results, *nErasedBlocks
> > *is zero.
> > startBlock......... 0
> > endBlock........... 15
> > chunkGroupBits..... 0
> > chunkGroupSize..... 1
> > nErasedBlocks...... 0
> > nTnodesCreated..... 100
> > nFreeTnodes........ 100
> > nObjectsCreated.... 200
> > nFreeObjects....... 96
> > nFreeChunks........ 0
> > 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.......... 0
> > nDeletedFiles...... 0
> > nUnlinkedFiles..... 2
> > nBackgroudDeletions 0
> > useNANDECC......... 1
> > isYaffs2........... 1
> >
> > Please let me know, is this the problem with low level driver or I am
> > missing something else.
> >
> > Thanks in advance.
> >
> > Regards,
> > Saquib Herman
> >
> > On Mon, Jan 18, 2010 at 10:39 PM, Charles Manning
> >
> > <manningc2@actrix.gen.nz>wrote:
> > > You still have not explained what steps you took.
> > >
> > > You don't need to fdisk or anything like that. Just erase the flash
> > > first.
> > >
> > > It is also important to turn on all the tracing you can when you start
> > > out. Read:http://www.yaffs.net/yaffs-debugging
> > >
> > > echo 0xffffffff > /proc/yaffs
> > >
> > > Also read
> > >
> http://www.aleph1.co.uk/lurker/message/20090826.015413.14594671.en.htmlfo
> > >r a general approach.
> > >
> > > On Tuesday 19 January 2010 01:53:48 Saquib wrote:
> > > > Hi All,
> > > >
> > > > Thanks for continued support and cooperation.
> > > >
> > > > We have created partition on NAND flash and able to mount one of the
> > > > directory to that partition.
> > > >
> > > > Issue is when we are trying to create a directory/file on mounted
> > > > folder, getting the following errors.
> > > >
> > > > *"yaffs tragedy: no more erased blocks"*
> > > > *mkdir: can not create a directory 'temp' : Cannot allocate memory*
> > > >
> > > >
> > > > Where temp is a directory/file name we are trying to create. We are
> not
> > > > doing "fdisk" before doing the mounting.
> > > >
> > > > Thanks in advance..
> > > >
> > > > Regards,
> > > > Saquib Herman
> > > >
> > > > On Thu, Jan 14, 2010 at 4:10 AM, Charles Manning
> > >
> > > <manningc2@actrix.gen.nz>wrote:
> > > > > On Wednesday 13 January 2010 20:10:27 Saquib wrote:
> > > > > > Hi All,
> > > > > >
> > > > > > I am using the YAFFS for the linux 2.16.21 version. I am facing
> > > > > > some problem.
> > > > > >
> > > > > > I am able to list my YAFFS and YAFFS2 file system in
> > >
> > > /proc/filesystems
> > >
> > > > > and
> > > > >
> > > > > > also created three partitions.
> > > > > >
> > > > > > But the problem is. I am not able to mount these partition on any
> > > > > > of the folders by using mount command. Let me know what may the
> > > > > > issue.
> > > > >
> > > > > You need to give some examples of the commands you are using and
> the
> > > > > errors you are getting.
> > > > >
> > > > > > One more query is do we need to do a format before mounting the
> > > > >
> > > > > partition.
> > > > >
> > > > > No.
> > > > >
> > > > > Charles
> > > > >
> > > > > _______________________________________________
> > > > > yaffs mailing list
> > > > > yaffs@lists.aleph1.co.uk
> > > > > http://lists.aleph1.co.uk/cgi-bin/mailman/listinfo/yaffs
> > >
> > > _______________________________________________
> > > yaffs mailing list
> > > yaffs@lists.aleph1.co.uk
> > > http://lists.aleph1.co.uk/cgi-bin/mailman/listinfo/yaffs
>
>
>
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