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Bugreport: mkfs.jffs2

DISCUSSION Wolfram Gettert 3 participants 3 messages Mar 9, 2005 – Mar 10, 2005 Memory technology devices (MTD)

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Wolfram Gettert

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#0 lore raw

Hi,
I want to report two bugs on mkfs.jffs2 Revision 1.44

1.
I tried to create a file sytem image with this commandline.

mkfs.jffs2 -l -e 0x20000 -D devtable.txt -d rootfs -o test.img

The file devtable.txt contains a line

----8<-----
/dev/input d 755 0 0 - - - - -
----8<-----

and the rootfs directory contains a directory

rootfs/dev/input

Of course it is my fault that I put the /dev/input directory in the device table and in the rootfs. But never the less the result is a jffs2 image which is not usable. Mounting it on the host with mtdram mtdblock .... freezes the PC and on the target I cannot mount it too.

So there should be an error message or something like "Omitting directory xyz from devtable already present"

2.
It is not possible to create a directory with devtable in "/" Devtable contains this line

/opt d 755 0 0 - - - - -

I get this message:

mkfs.jffs2: skipping device_table entry '/opt': no parent directory!

Please put me on CC, I am not subscribed to list.

Wolfram

Signature · 11 lines
Dipl.-Ing.
Wolfram Gettert

Software Engineer Embedded Systems

Mixed Mode GmbH
Lochhamer Schlag 17                   D-82166 Gräfelfing/München
Tel. +49-89-89868.0                   Fax +49-89-89868.222
mailto:[email protected]  http://www.mixed-mode.de

Mixed Mode - Your Partner for Systems Engineering!
#1 lore raw
Quoted 10 lines · Wolfram Gettert

Hi,
I want to report two bugs on mkfs.jffs2 Revision 1.44

1.
I tried to create a file sytem image with this commandline.

mkfs.jffs2 -l -e 0x20000 -D devtable.txt -d rootfs -o test.img

The file devtable.txt contains a line

Quoted 7 lines

----8<-----
/dev/input d 755 0 0 - - - - -
----8<-----

and the rootfs directory contains a directory

rootfs/dev/input

So what is the problem?

I am using mkfs.jffs2: revision 1.43 with devtable entries like

/dev/input       d   755     0       0       -       -       -       -       -
/dev/input/event c   640     0       0       13      64      0       1       1

and it works just fine...

--
Steven

#2 lore raw
In reply to Wolfram Gettert
Quoted 4 lines

I'm having some trouble mounting a JFFS2 root partition as rw at boot/init time, and would appreciate any insight that you guys can provide.

General suggestions:

* Make sure you use the latest mkfs.jffs2;
* Try to exclude summary patch and to see what happens;
* Enable JFFS2 debugging messages and provide the output in the next
report;
* Make sure you put your JFFS2 image on the flash correctly. To do
this you might erase your flash (flash_eraseall -j), mount it and copy your files there by means of "cp -r -a";

--
Best Regards,
Artem B. Bityuckiy,
St.-Petersburg, Russia.