morphix-user

[Morphix-user] cloop read error

[<p5...@ya...>]

Hi all,
 I'm trying to costumize morphix using morphing-morphix, but when i try to
boot my new image i obtain several errors...
To build main module i exec this command:
mmaker -t /mnt/sda1/tmp -g debian-bootstrap-sid.tgz default.xml \
default-module.mod

To build minimodule i use minimod-gen.
this is my minimod tree:
#ls test-mini/morphix
REDME files loadmod.sh main_module mini_module

for the iso:
isomorph --add main default-module.mod basemod-2.6.12-2005-12-05.iso temp.iso
isomorph --add mini test-mini.mod temp.iso default.iso

and trying my iso on vmware thi is what i obtain:
[...]
cloop: Read error at pos 477 in file <NULL>, 3619 bytes lost.
* Loading Module /cdrom/mainmod/default-module.mod ...
cloop: losetup_file: 2052 blocks, 65536 bytes/block, largest block is
65562 bytes.
cloop: Can't open device read-write
[...]
* Checking for MiniModules on CDROM
cloop: Read error at pos 477 in file <NULL>, 3619 bytes lost.
head: cannot open '/mnt/main/morphix/main_module' for reading: No such
file or directory
* No unioctl found, not applying unionfs minimodule overlaying
* No able to find /mnt/mini/mod2/morphix/loadmod.sh, continuing
[..]


anybody has any idea?
(all binaries and script that i use are taken from morphing-morphix)

tnx

Re: [Morphix-user] cloop read error

[Alex de L. <al...@de...>]

On Mon, 2005-12-05 at 13:07 +0100, p5...@ya... wrote:
> Hi all,
>  I'm trying to costumize morphix using morphing-morphix, but when i try t=
o
> boot my new image i obtain several errors...
> anybody has any idea?
> (all binaries and script that i use are taken from morphing-morphix)

Try adding a larger file to your minimod (50kb or so). I think Brendan
(bmsleight) also ran into this limitation some time ago: cloop
compression doesn't work properly on very small files...

--=20
/------------------------------------------------------------------\
| Alex de Landgraaf            | The cure for boredom is curiosity |
| Student AI & CS, VU, A'dam   |  There is no cure for curiosity   |
| Phone: 06-16844084           |                                   |
| GPG: http://www.alextreme.org/key_alex.asc    /'-'\              |
| www.alextreme.org & www.morphix.org          ( o o )             |
\------------------------------------------oOO0--(_)--0OOo---------/

Re: [Morphix-user] cloop read error

[Brendan M. S. <me...@ba...>]

Hi p5005,

On 12/5/05, p5...@ya... <p5...@ya...> wrote:
> Hi all,

Does the mainmodule load at all ?

> (all binaries and script that i use are taken from morphing-morphix)
>

Are you building it from the LiveCD or building it on a different
linux environment ? It looks like the cloop used to build the module
is the wrong version, but the live-cd should have the correct cloop
versions.

> mmaker -t /mnt/sda1/tmp -g debian-bootstrap-sid.tgz default.xml \
> default-module.mod

Was the default repository on the templates changed from 192.168.0.1
to a valid repository ?

I have not pointed the template directly to Debian to try to encourage
the use of local repositories and reduce the load on Debian servers.

>
> To build minimodule i use minimod-gen.
> this is my minimod tree:
> #ls test-mini/morphix
> REDME files loadmod.sh main_module mini_module

There is a patched version of minimodule-gen on the Morphing-Morphix
CD which includes as file in test-mini/morphix/files/ called
minimodule.junk to make sure the module is above the minimum size.


> [...]
> cloop: Read error at pos 477 in file <NULL>, 3619 bytes lost.
> * Loading Module /cdrom/mainmod/default-module.mod ...
> cloop: losetup_file: 2052 blocks, 65536 bytes/block, largest block is
> 65562 bytes.
> cloop: Can't open device read-write
> [...]
> * Checking for MiniModules on CDROM
> cloop: Read error at pos 477 in file <NULL>, 3619 bytes lost.
> head: cannot open '/mnt/main/morphix/main_module' for reading: No such
> file or directory

Either missing mainmodule ? or incorrect cloop version.

> * No able to find /mnt/mini/mod2/morphix/loadmod.sh, continuing
> [..]

Either missing minimodule ? or incorrect cloop version.


Hope this helps,
Brendan

Re: [Morphix-user] cloop read error

[paolo.perfetti <pao...@ya...>]

> Hi p5005,
hi Brendan

> Does the mainmodule load at all ?
Yes, now if i use my iso with only mainmod, there's no problem.
(yesterday i've forget to put cloop-utils in mainmod, is this the problem?)

> Are you building it from the LiveCD or building it on a different
> linux environment ? It looks like the cloop used to build the module
> is the wrong version, but the live-cd should have the correct cloop
> versions.
from the LiveCD

>
>> mmaker -t /mnt/sda1/tmp -g debian-bootstrap-sid.tgz default.xml \
>> default-module.mod
>
> Was the default repository on the templates changed from 192.168.0.1
> to a valid repository ?
sure, ftp.debian.org/debian (there is my module.xml as attachment)

>> To build minimodule i use minimod-gen.
>> this is my minimod tree:
>> #ls test-mini/morphix
>> REDME files loadmod.sh main_module mini_module
>
> There is a patched version of minimodule-gen on the Morphing-Morphix
> CD which includes as file in test-mini/morphix/files/ called
> minimodule.junk to make sure the module is above the minimum size.
Now when i build minimod using minimod-gen, there's no problem but when i
use this script:
######
DIR=/mnt/sda1/mini-module/test-mini/
MINIMODULE=/mnt/sda1/mini-module/test-mini.mod
#TMP=/mnt/sda1/tmp

SIZE=`du -s $DIR | awk '{ print  $1}'`
: $((DIFF = 50 - $SIZE))
: $((DIFF = 2*DIFF))
if [ $SIZE -lt 50 ] ; then
        dd if=/dev/urandom of=$DIR/morphix/files/padding.junk count=$SIZE
fi
mkisofs -U -R -V "Morphix Mini" -hide-rr-moved -cache-inodes \
-no-bak -pad  $DIR | nice -5 create_compressed_fs - 65536 > $MINIMODULE

rm $DIR/morphix/files/padding.junk
######

...i obtain the same errors

i need to automize minimodule generation, so is difficult for me to use
minimod-gen. I look to source and i can't understand what minimodule-gen
does and i don't


bye, paolo

Re: [Morphix-user] cloop read error

[Brendan M. S. <me...@ba...>]

Hi Paolo,

On 12/7/05, paolo.perfetti <> wrote:
> > Does the mainmodule load at all ?
> Yes, now if i use my iso with only mainmod, there's no problem.
> (yesterday i've forget to put cloop-utils in mainmod, is this the problem=
?)

I would use cloop-utils as default, although I am note sure this was
the problem.

> Now when i build minimod using minimod-gen, there's no problem but when i
> use this script:
> ######
> DIR=3D/mnt/sda1/mini-module/test-mini/
> MINIMODULE=3D/mnt/sda1/mini-module/test-mini.mod
> #TMP=3D/mnt/sda1/tmp
>
> SIZE=3D`du -s $DIR | awk '{ print  $1}'`
> : $((DIFF =3D 50 - $SIZE))
> : $((DIFF =3D 2*DIFF))
> if [ $SIZE -lt 50 ] ; then
>        dd if=3D/dev/urandom of=3D$DIR/morphix/files/padding.junk count=3D=
$SIZE
> fi
> mkisofs -U -R -V "Morphix Mini" -hide-rr-moved -cache-inodes \
> -no-bak -pad  $DIR | nice -5 create_compressed_fs - 65536 > $MINIMODULE
>
> rm $DIR/morphix/files/padding.junk
> ######

Does this look for a file size of less the 50 bytes rather than less
than 50k bytes, try:-
SIZE=3D`du -s -k $DIR | awk '{ print  $1}'`

Also I would add bs=3D1k :-
dd if=3D/dev/urandom of=3D$DIR/morphix/files/padding.junk bs=3D1k count=3D$=
SIZE

Personally I ammended mimimod-gen to always produce a junk file of 20K
as it takes up so little space on the compressed minimodule it IMHO
not worth deleting.

Hope this helps,
Brendan