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Some problems with uclinux

Altera_Forum
Honored Contributor II
1,110 Views

Hi 

 

I met following problems when I am building standard linux tasks. 

 

->Creating a ram disk image of ext2 fs problem 

My cf card is ok and creating an ext2 fs successfully.But the next step for creating a ram disk image always does not rool my hoop. 

 # dd if=/dev/zero of=/dev/ram0 bs=1k count=1024]  

<div class='quotetop'>QUOTE </div> 

--- Quote Start ---  

/dev/ram0:No space left on device 

4097+0 records in 

4096+0 records out [/b] 

--- Quote End ---  

 

  # mke2fs -s0 -vm0 /dev/ram0 1024   # tune2fs -i 0 /dev/ram0   # mount /dev/ram0 /mnt  # umount /mnt  # dd if=/dev/ram0 of=ramfs1024.img count=1024  

<div class='quotetop'>QUOTE </div> 

--- Quote Start ---  

ramfs1024.img:Read-only file system[/b] 

--- Quote End ---  

 

# mount –n /dev/hda1 /mnt/ide0# dd if=/ramfs1024.img of=/dev/ram0  

<div class='quotetop'>QUOTE </div> 

--- Quote Start ---  

/ramfs1024.img:No such file or directory[/b] 

--- Quote End ---  

 

It seems that the ram image is not created. 

 

 

-->Ftpd problem 

I can connect and login Ok,but I can&#39;t upload. It&#39;s read-only. 

How to create a rw fs? 

 

Thank you!
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2 Replies
Altera_Forum
Honored Contributor II
271 Views

I login NiosII board OK and can creat new folders by ftp. I can&#39;t see them in the LeapFTP window,But they can be found by the console. Why? Can anyone help me? 

 

 

 

 

--- Quote Start ---  

originally posted by singerpop@Oct 22 2005, 02:17 PM 

hi 

 

i met following problems when i am building standard linux tasks. 

 

->creating a ram disk image of ext2 fs problem 

    my cf card is ok  and creating an ext2 fs successfully.but the next step for    creating a ram disk image always does not rool my hoop. 

 # dd if=/dev/zero of=/dev/ram0 bs=1k count=1024]  

<div class='quotetop'>quote </div> 

--- quote start ---  

/dev/ram0:no space left on device 

4097+0 records in 

4096+0 records out  

--- Quote End ---  

 

  # mke2fs -s0 -vm0 /dev/ram0 1024   # tune2fs -i 0 /dev/ram0   # mount /dev/ram0 /mnt  # umount /mnt  # dd if=/dev/ram0 of=ramfs1024.img count=1024  

<div class='quotetop'>QUOTE </div> 

--- Quote Start ---  

ramfs1024.img:Read-only file system[/b] 

--- Quote End ---  

 

# mount –n /dev/hda1 /mnt/ide0# dd if=/ramfs1024.img of=/dev/ram0  

<div class='quotetop'>QUOTE </div> 

--- Quote Start ---  

/ramfs1024.img:No such file or directory[/b] 

--- Quote End ---  

 

It seems that the ram image is not created. 

 

 

-->Ftpd problem 

I can connect and login Ok,but I can&#39;t upload. It&#39;s read-only. 

How to create a rw fs? 

 

Thank you! 

<div align='right'><{post_snapback}> (index.php?act=findpost&pid=10524)</div> 

[/b] 

--- Quote End ---  

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Altera_Forum
Honored Contributor II
271 Views

Hi Singerpop! 

 

You have not the rights to write in every directory. 

I can upload via ftp files to "tmp" or "var" but e.g. not to "usr". 

 

In creating a ram disk on nios board i have no experiences,  

cause I am also a beginner. 

 

 

Bye, Lothar.
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