JFFs2 usage questions

JFFs2 usage questions

[Vikram Mehta]

Hi,

Now I can mount  using  jffs2.
and my directory does show the contents.
I have a few questions on the usage of JFFs2

1.)  I cannot mkdir into the folder. I mount dev/mtdblock2 on  /mnt.
If I do mkdir ,  the message comes
no space left on device

2.) if I reboot the system /mnt is left as empty.

3.) How can I provide that 1or 2 of my partions are readonly. That is they
are not erased

4.) I want that after booting, one partition is created as Jffs2. ( I can
add the commands in rc) and I can write on it like on do on /var which is
mounted on RAM

Regards
Vikram

Re: JFFs2 usage questions

[Paul van Gool]

On Thu, Jun 26, 2003 at 01:31:10AM -0700, Vikram Mehta wrote:
> 1.)  I cannot mkdir into the folder. I mount dev/mtdblock2 on  /mnt.
> If I do mkdir ,  the message comes
> no space left on device
I had a similar problem earlier this week and asked the list. In my case
the reason was that I didn't have enough erase blocks available for the GC
algorithm to be able to do its job. Make sure you have at least 5 erase
blocks available when you create the JFFS2 image.
 
> 2.) if I reboot the system /mnt is left as empty.
Did you verify the mount command gets executed during boot? Just add an
echo to the rc script and verify you see its output while rebooting.

Hope this helps.

Paul
 
> 3.) How can I provide that 1or 2 of my partions are readonly. That is they
> are not erased
> 
> 4.) I want that after booting, one partition is created as Jffs2. ( I can
> add the commands in rc) and I can write on it like on do on /var which is
> mounted on RAM
> 
> Regards
> Vikram
> 
> 
> 
> 
> 
> 
> 
> ______________________________________________________
> Linux MTD discussion mailing list
> http://lists.infradead.org/mailman/listinfo/linux-mtd/

-- 
Paul van Gool                                               Rincon Networks
paul.vangool@rinconnetworks.com                              (805)-705-1442

Re: JFFs2 usage questions

[yong_guo@scomcenter.com]

----- Original Message ----- 
From: "Vikram Mehta" <vm6580@hotmail.com>
To: "mtd" <linux-mtd@lists.infradead.org>
Cc: "Uclinux-Dev@Uclinux.Org" <uclinux-dev@uclinux.org>
Sent: Thursday, June 26, 2003 4:31 PM
Subject: JFFs2 usage questions


> Hi,
> 
> Now I can mount  using  jffs2.
> and my directory does show the contents.
> I have a few questions on the usage of JFFs2
> 
> 1.)  I cannot mkdir into the folder. I mount dev/mtdblock2 on  /mnt.
> If I do mkdir ,  the message comes
> no space left on device
> 
> 2.) if I reboot the system /mnt is left as empty.
> 
> 3.) How can I provide that 1or 2 of my partions are readonly. That is they
> are not erased
> 
You can modify these partions worked as readonly  in MTD partions driver,  in  the subfloder of the linux kernel source code
that's /drivers/mtd/maps/, edit the one of these file which you are using for MTD partion!

> 4.) I want that after booting, one partition is created as Jffs2. ( I can
> add the commands in rc) and I can write on it like on do on /var which is
> mounted on RAM
please view ftp://ftp.uk.linux.org/pub/people/dwmw2/mtd/cvs/mtd/mtd-jffs-HOWTO.txt for detail!
> 
> Regards
> Vikram
> 
> 
> 
> 
> 
> 
> 
> ______________________________________________________
> Linux MTD discussion mailing list
> http://lists.infradead.org/mailman/listinfo/linux-mtd/