RE: Re(2): trouble compiling mkfs.jffs2

RE: Re(2): trouble compiling mkfs.jffs2

[Jonas Holmberg]

BTW: shouldn't mkfs.jffs2 be in the kernel source like mkcramfs?

/Jonas

Re: Re(2): trouble compiling mkfs.jffs2

[David Woodhouse]

jonas.holmberg@axis.com said:
> BTW: shouldn't mkfs.jffs2 be in the kernel source like mkcramfs? 

Possibly. 

Whatever happens, we should probably deprecate the non-zlib compression
methods except for rtime, which can be implmented purely in mkfs.jffs2.c 
rather than mucking about with sharing files between the kernel and 
userspace code.

--
dwmw2

trouble compiling mkfs.jffs2

[James Schettine]

JFFS2 is working great on my embedded arm processor.
(Great work everybody!)

I have started out with a pre-built root image I grabbed 
from others working on handhelds, and they have set
the erase block size to 0x40000 and mine needs to be
0x20000.  Question #1...  does this only affect the
overhead/optimal use or will I actually run into problems
if I run this over a long period.

In order to re-flash my embedded root filesystem with 
the correct erase block size, I have transferred all files 
to my desktop system (an older Debian 2.2) and read up 
on using mkfs.jffs2.  I couldn't find a pre-compiled binary 
in a quick and lazy search so I grabbed the cvs tree, 
cd util, and make mkfs.jffs2.  (did the configure thing too,
but that didn't fix this problem.)

I'm getting problems with size_t undefined in linux/string.h
(I can't believe it doesn't include what it needs !), and 
patching around that I get conflicts between linux/string.h 
and asm/string.h

Then it struck me that as a user-land utility application,
we shouldn't need to get TOO intimate with the kernel.
After all, I am cross-building my filesystem.  The more
you ask about the host kernel, the more wrong you'll
be when you get to the target kernel.

Has anyone else had these troubles/got a work-around.
It's not a good time to be upgrading this particular 
system right now.

Re: trouble compiling mkfs.jffs2

[Jörn Engel]

Hi!

> In order to re-flash my embedded root filesystem with 
> the correct erase block size, I have transferred all files 
> to my desktop system (an older Debian 2.2) and read up 
> on using mkfs.jffs2.  I couldn't find a pre-compiled binary 
> in a quick and lazy search so I grabbed the cvs tree, 
> cd util, and make mkfs.jffs2.  (did the configure thing too,
> but that didn't fix this problem.)
>
> [more error descriptions]

Just a wild guess, but Debian 2.2 (aka Potato) is based on the 2.2
Kernel series. This also effects a bunch of files in the /usr/include
tree and might be the cause of your problems.
You could update your Debian system to testing/Woody or simply
temporarily symlink /usr/include/linux to /usr/src/linux/include - if
that one belongs to a current kernel version.

Jörn

-- 
Every good work of software starts by 
scratching a developer's personal itch.

Re(2): trouble compiling mkfs.jffs2

[James Schettine]

joern@wohnheim.fh-wedel.de writes:
>Just a wild guess, but Debian 2.2 (aka Potato) is based on the 2.2
>Kernel series. This also effects a bunch of files in the /usr/include
>tree and might be the cause of your problems.
>You could update your Debian system to testing/Woody or simply
>temporarily symlink /usr/include/linux to /usr/src/linux/include - if
>that one belongs to a current kernel version.

Thanks...  I got it to compile (v1.15), but when I run it 
it creates a file size == one erase block.

A quick web search led me to :
ftp://ftp.uk.linux.org/pub/people/dwmw2/iPAQ/mkfs.jffs2.1.8
running it --version sez 1.7 and it creates the whole 5 meg
but my kernel complains bitterly that the fs is too old.

If I could grab a binary somewhere I could move on.
If no-one can point me to a binary, I guess I'll
be debugging this app on a 2.2 kernel.
(my boss threatens to "just go back to WinCE"!)

Thanks  J

Re: Re(2): trouble compiling mkfs.jffs2

[David Woodhouse]

james@telos-systems.com said:
>  Thanks...  I got it to compile (v1.15), but when I run it  it creates
> a file size == one erase block.

1.15 was doing naughty things when given a relative rootdir, and just 
segfaulting when the rootdir wasn't specified.  1.16 should fix it.

ftp.uk.linux.org:/pub/people/dwmw2/jffs2/mkfs.jffs2-1.16

--
dwmw2

RE: Re(2): trouble compiling mkfs.jffs2

[Joakim Tjernlund]

Hi

When mounting a mkfs.jffs2 made jffs2 image, I get:
root@board8:~# mount /dev/mtdblock4 /jffs2/
Child dir "." (ino #1) of dir ino #1 appears to be a hard link
root@board8:~# cd /jffs2/                                     
root@board8:/jffs2# ls -l
total 4
drwxr-xr-x    2 root     root            0 Sep 14 09:05 ./
drwxr-xr-x    2 root     root            0 Sep 14 09:05 ./
drwxrwxrwx   17 root     root         4096 Sep 11 09:53 ../
drwxr-xr-x    1 root     root            0 Sep 11 09:38 bin/
drwxr-xr-x    1 root     root            0 Sep  4 08:55 boot/
drwxr-xr-x    1 root     root            0 Sep 14 09:33 dev/
drwxr-xr-x    1 root     root            0 Sep 11 09:49 etc/
-rw-r--r--    1 root     root            0 Sep  4 13:38 fastboot
drwxr-xr-x    1 root     root            0 Sep  4 08:57 home/
drwxr-xr-x    1 root     root            0 Jul 10 07:04 lib/
drwxr-xr-x    1 root     root            0 May 23 19:49 mnt/
drwxr-xr-x    1 root     root            0 May 23 19:49 opt/
drwxr-xr-x    1 root     root            0 Sep  4 08:52 proc/
drwsr--r--    1 root     root            0 Sep 17 12:36 root/
drwxr-xr-x    1 root     root            0 Sep  4 11:57 sbin/
drwxrwxrwt    1 root     root            0 Aug 29 07:19 tmp/
drwxr-xr-x    1 root     root            0 Sep  4 10:28 usr/
drwxr-xr-x    1 root     root            0 Jun  8 17:29 var/

This is with mkfs.jffs2 v1.16

I am not sure what I was running before I upgraded to v1.16, but it could 
have been as old as v1.11

This FS is created from MV 2.0 by doing(on Host, Redhat 7.1):
cp -a /opt/hardhat/.../target /root/target
<rm /root/target a lot of unnedded files>
mkfs.jffs2 -b -e 0x40000 -o rootfs -d /root/target

On target(custom PPC 860):
eraseall /dev/mtd4
cp rootfs /dev/mtdblock4




   Joakim
> 
> 
> james@telos-systems.com said:
> >  Thanks...  I got it to compile (v1.15), but when I run it  it creates
> > a file size == one erase block.
> 
> 1.15 was doing naughty things when given a relative rootdir, and just 
> segfaulting when the rootdir wasn't specified.  1.16 should fix it.
> 
> ftp.uk.linux.org:/pub/people/dwmw2/jffs2/mkfs.jffs2-1.16
> 
> --
> dwmw2
> 
> 
> 
> ______________________________________________________
> Linux MTD discussion mailing list
> http://lists.infradead.org/mailman/listinfo/linux-mtd/

Re: Re(2): trouble compiling mkfs.jffs2

[David Woodhouse]

joakim.tjernlund@lumentis.se said:
> When mounting a mkfs.jffs2 made jffs2 image, I get:
> root@board8:~# mount /dev/mtdblock4 /jffs2/
> Child dir "." (ino #1) of dir ino #1 appears to be a hard link
> root@board8:~# cd /jffs2/                                     
> root@board8:/jffs2# ls -l
> total 4
> drwxr-xr-x    2 root     root            0 Sep 14 09:05 ./
> drwxr-xr-x    2 root     root            0 Sep 14 09:05 ./
> drwxrwxrwx   17 root     root         4096 Sep 11 09:53 ../

Interesting. I recommend you poke Erik with a sharp stick :) 

What args did you use to create the filesystem, and does it still do it 
with v1.15 (before I changed some stuff)?

--
dwmw2

RE: Re(2): trouble compiling mkfs.jffs2

[Joakim Tjernlund]

> 
> Interesting. I recommend you poke Erik with a sharp stick :) 
:-)
> 
> What args did you use to create the filesystem, and does it still do it 
> with v1.15 (before I changed some stuff)?
args? What more do you want, than what I included last in my previous mail?

v1.15 has the same problem.

  Jocke
> 
> --
> dwmw2
> 
> 

Re: Re(2): trouble compiling mkfs.jffs2

[David Woodhouse]

joakim.tjernlund@lumentis.se said:
> args? What more do you want, than what I included last in my previous
> mail? 

Er, I want you to put them near the top of the mail, of course, so that I 
don't have to be intelligent enough to scroll down and look at them :)

--
dwmw2

RE: Re(2): trouble compiling mkfs.jffs2

[Joakim Tjernlund]

> 
> Er, I want you to put them near the top of the mail, of course, so that I 
> don't have to be intelligent enough to scroll down and look at them :)

OK, I try to remember that next time :-)
 
   Jocke

Re: Re(2): trouble compiling mkfs.jffs2

[Erik Andersen]

On Mon Sep 17, 2001 at 03:53:44PM +0100, David Woodhouse wrote:
> 
> joakim.tjernlund@lumentis.se said:
> > When mounting a mkfs.jffs2 made jffs2 image, I get:
> > root@board8:~# mount /dev/mtdblock4 /jffs2/
> > Child dir "." (ino #1) of dir ino #1 appears to be a hard link
> > root@board8:~# cd /jffs2/                                     
> > root@board8:/jffs2# ls -l
> > total 4
> > drwxr-xr-x    2 root     root            0 Sep 14 09:05 ./
> > drwxr-xr-x    2 root     root            0 Sep 14 09:05 ./
> > drwxrwxrwx   17 root     root         4096 Sep 11 09:53 ../
> 
> Interesting. I recommend you poke Erik with a sharp stick :) 

Hmm.  Sorry about that.  I thought I had everything perfect
but I guess not... 

 -Erik

--
Erik B. Andersen   email:  andersee@debian.org, formerly of Lineo
--This message was written using 73% post-consumer electrons--