From saquib.herman@gmail.com Fri Jan 22 03:54:49 2010 Received: from qw-out-1920.google.com ([74.125.92.145]) by stoneboat.aleph1.co.uk with esmtp (Exim 4.69) (envelope-from ) id 1NYAba-0006Wk-Et for yaffs@lists.aleph1.co.uk; Fri, 22 Jan 2010 03:54:49 +0000 Received: by qw-out-1920.google.com with SMTP id 5so22996qwc.56 for ; Thu, 21 Jan 2010 19:54:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:content-type; bh=NHWM7t2g+6hT2Yx7eRk9gHNrydyfauxHiQG6UBJd1pw=; b=sqbFnIbBj4nrmDcJFFPMfreMxYe7OuMRIgYORsKOllzbf78fi5d78eO4qsu5LC/NK2 SeOHhFtiI+5VLmb2YaxCmlyQv3syyzBLODdD3kX4KvcOmsgeaBFKtB4kIsQ1QXR23VV9 6eWe8xxjbqYMxNB227GHpWAxOmlbCC/voNIlw= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=CRTT3bYTTKQ8Nqkp/qKj8v1ARDMGG41/grpGdyt37Z50EsAKMEGuBSZEbPpWrbcFEj ifmVBfdehy0MHfRkzB36SdGS14Pl08x/QfzKb9xIzIkc8a8vL7c7sN09pStQWvKynayv RQTmMba+5+t+03V1LfkZkDIS+2lODwAYY9FDM= MIME-Version: 1.0 Received: by 10.224.80.87 with SMTP id s23mr1641259qak.70.1264132481233; Thu, 21 Jan 2010 19:54:41 -0800 (PST) In-Reply-To: <201001211059.38782.manningc2@actrix.gen.nz> References: <201001190609.07854.manningc2@actrix.gen.nz> <201001211059.38782.manningc2@actrix.gen.nz> Date: Fri, 22 Jan 2010 09:24:41 +0530 Message-ID: From: Saquib To: yaffs@lists.aleph1.co.uk Content-Type: multipart/alternative; boundary=001636137aa27e36df047db8c7f9 X-SA-Exim-Connect-IP: 74.125.92.145 X-SA-Exim-Mail-From: saquib.herman@gmail.com X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on stoneboat.aleph1.co.uk X-Spam-Level: X-Spam-Status: No, score=-2.6 required=4.5 tests=BAYES_00,HTML_MESSAGE, SPF_PASS autolearn=no version=3.2.5 X-SA-Exim-Version: 4.2.1 (built Wed, 25 Jun 2008 17:14:11 +0000) X-SA-Exim-Scanned: Yes (on stoneboat.aleph1.co.uk) Subject: Re: [Yaffs] YAFFS2 Query X-BeenThere: yaffs@lists.aleph1.co.uk X-Mailman-Version: 2.1.11 Precedence: list List-Id: Discussion of YAFFS NAND flash filesystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 22 Jan 2010 03:54:50 -0000 --001636137aa27e36df047db8c7f9 Content-Type: text/plain; charset=ISO-8859-1 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 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 > > > > 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 > > > > > > 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 > > > > _______________________________________________ > yaffs mailing list > yaffs@lists.aleph1.co.uk > http://lists.aleph1.co.uk/cgi-bin/mailman/listinfo/yaffs > --001636137aa27e36df047db8c7f9 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
Hi ,
=A0
Thanks for your continued co-operation and support.
=A0
With suggestions from yourside ,=A0I=A0did the =A0modification a= t low level drivers.
Now I am not seeing any YAFFS error message during mounting. I can see= lost+found=A0 in mounted directory.
=A0
Command #cat /proc/yaffs gives the following results:
=A0
=A0#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 E= xp $
$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..... 0nGCCopies.......... 0
garbageCollections. 0
passiveGCs......... 0 nRetriedWrites..... 0
nRetireBlocks...... 0
eccFixed........... 0
eccUnfixed......... 0
= tagsEccFixed....... 0
tagsEccUnfixed..... 0
cacheHits.......... 0
= nDeletedFiles...... 0
nUnlinkedFiles..... 0
nBackgro= udDeletions 0
useNANDECC......... 1
isYaffs2........... 1
=A0
Now I gave the following commands
=A0
#cd /mnt
#mkdir abc
Gives the error message as
mkdir: cannot create directory 'abc': = Cannot allocate memory
#cat /proc/yaffs
=A0
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..... 0nGCCopies.......... 0
garbageCollections. 0
passiveGCs......... 0 nRetriedWrites..... 0
nRetireBlocks...... 0
eccFixed........... 0
eccUnfixed......... 0
= tagsEccFixed....... 0
tagsEccUnfixed..... 0
cacheHits.......... 0
= nDeletedFiles...... 0
nUnlinkedFiles..... 1
nBackgro= udDeletions 0
useNANDECC......... 1
isYaffs2........... 1
=A0
every time when I create a directry/file, value of nUnlinkedFiles is changing but I can not see t= he folders/files in mounted dicertory.
=A0
Thanks in advance.
=A0
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 mean= s all the
blocks were either full or bad. Try to erase the flash and see if that fixe= s
things. If not, then there is alikely a problem in the bad block handling o= r
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
> =A0#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 e= rror
> "*yaffs tragedy: no more eraased blocks*"
>
> On doing the # cat /proc/yaffs can see the below results, *nErasedBloc= ks
> *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<= br> > 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/messa= ge/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 on= e of the
> > > directory to that partition.
> > >
> > > Issue is when we are trying to create a directory/file on mo= unted
> > > folder, getting the following errors.
> > >
> > > *"yaffs tragedy: no more erased blocks"*
> > > *mkdir: can not create a directory 'temp' : Cannot a= llocate 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.g= en.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 p= artition 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/l= istinfo/yaffs
> >
> > _______________________________________________
> > yaffs mailing list
> > yaffs@lists.aleph1.co= .uk
> > http://lists.aleph1.co.uk/cgi-bin/mailman/listinfo/ya= ffs



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