Problem to save file on the hard disk! What I have to set to do it ?

Thomas Doerfler (nt) Thomas.Doerfler at imd-systems.de
Mon Mar 13 18:50:03 UTC 2006


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Matteo,

I am a bit confused, your listing shows, that /dev/hda1 is a Linux ext3
partition, but you write that gparted shows it as FAT16. But /dev/hda2
looks fine in the partition table. can you access the filesystem on
/dev/hda2 from linux?

Thomas.

Matteo schrieb:
> Ok this is the result of the command "fdisk -l /dev/hda"
> 
> Disk /dev/hda: 40.0 GB, 40007761920 bytes
> 255 heads, 63 sectors/track, 4864 cylinders
> Units = cilindri of 16065 * 512 = 8225280 bytes
> 
> Dispositivo Boot      Start         End      Blocks   Id  System
> /dev/hda1            2678        3014     2706952+  83  Linux
> /dev/hda2               1        2677    21502971    c  W95 FAT32 (LBA)
> /dev/hda3            3015        4784    14217525   83  Linux
> /dev/hda4            4785        4864      642600    5  Esteso
> /dev/hda5            4785        4864      642568+  82  Linux swap / Solaris
> 
> 
> looking with gparted I have the result that, hda1 is "FAT16", hda2 is "FAT32",
> hda3 is "ext3", hda4 is "exetended", hda5 is "linux swap".
> 
> I created hda1 with FAT16 thinking to resolve the problem, but from the fileio
> example I have always the same error, 
> " fsmount: mounting of "/dev/hda1" to "/mnt/hda1" failed: No such file or 
> directory " but now hda1 is FAT16 so it could be right for RTEMS, but it isn't.
> Why ?
> 
> Can you help me ?
> 
> Thanks advanced
> 
> MAtteo
> 
> 
> 
> Scrive "Thomas Doerfler (nt)" <Thomas.Doerfler at imd-systems.de>:
> 
> 
> Matteo,
> 
> Matteo schrieb:
> 
>>Ok hda3 is "ext3", but I have a window "FAT" on hda1 and hda2, so I could
> 
> save
> 
>>my file in this partitions? 
> 
> yes, this should be possible.
> 
> 
>>But I see from the error message that RTEMS can't mount all my partition
> 
> hda1,2
> 
>>(FAT) for windows and hda3,4 (ext3) for linux.
> 
> can you boot linux on your system, log in as root and send me the output
> of the command   "fdisk -l /dev/hda" ? Maybe the type of your FAT
> partitions is ounknown to RTES or your FAT partitions are located in an
> extended partition (most unlikely).
> 
> 
>>Can you help to save a file in one of this partitions ?
>>Is there any way to save on a "ext3" partitions ?(Because I have to test
> 
> RTEMS
> 
>>on some linux systems and I'm afraid they are all "ext3"!)
> 
> Currently there is no RTEMS support for ext3 filesystems, so sorry, this
> will not work.
> 
> wkr,
> Thomas.
> 
> 
> 
> 
>>Scrive "Thomas Doerfler (nt)" <Thomas.Doerfler at imd-systems.de>:
> 
> 
>>Matteo,
> 
>>well, it SHOUDL work, if you have a FAT partition in the primary
>>partition table of your harddisk.
>>You are mentioning havong Linux on hda3, most problable it will use
>>"ext3" as the filesystem, and RTEMS does not know this FS type.
> 
>>When you are running Linux on your system, what kind of output do you
>>get from the command
> 
>>fdisk -l /dev/hda
> 
>>(you have to run this as root).
> 
>>wkr,
>>Thomas.
> 
> 
>>Matteo schrieb:
> 
> 
>>>Ok, like you have suggested I understood the steps to mount the hardisk,
> 
>>but 
> 
> 
>>>the problem is that the fileio example doesn't mount my hardisk!
>>>I follow the steps suggest from the fileio.doc but after it asks to me to
> 
>>enter 
> 
> 
>>>the partition table of first harddisk ( /dev/hda ) I try to mount the 
>>>partitions and I have an error, He says to me 
>>>" fsmount: mounting of "/dev/hda1" to "/mnt/hda1" failed: No such file or 
>>>directory "  and so on for hda2,3,4 and for hdc1,2,3,4 
> 
>>>Linux partition is on hda3, but the fileio example doesn't mount it !
>>>What's the problem ?
> 
>>>Have you some idea ?
> 
>>>Really Thanks in advance
> 
>>>Matteo
> 
> 
> 
>>>Scrive "Thomas Doerfler (nt)" <Thomas.Doerfler at imd-systems.de>:
> 
> 
>>>Matteo,
> 
>>>I assume you are working on a standard i386 pc hardware. Have a look at
>>>the "fileio" sample application available in the RTEMS source tree under
>>>"cpukit/testsuites/samples/fileio". You should try to get it working on
>>>your system (it should work from scratch if you got a standard PC system).
> 
>>>Have a look at "fileio.doc", it explains a bit what should work with
>>>this sample program.
> 
>>>In your application, you will have to do the following steps to get
>>>access to your harddisk:
> 
>>>- add the IDE and ATA drivers to your standard driver table (see entries
>>>in fileio/system.h)
>>>- add a rtems_bdbuf_configuration data structure to your system (once
>>>again, see fileio/system.h)
> 
>>>- add a fs_table to your application, which specifies which harddisk
>>>partitions are to be mounted to which mount points (see fileio/
> 
>>>- call the "rtems_ide_part_table_initialize" function after system
>>>startup to read in your harddisk partition table. This call will create
>>>a new device node (/dev/hda1 ...) for each partition available.
> 
>>>- call the "rtems_fsmount" function to mount the partitions to their
>>>respective mount points. Have a look into "libmisc/fsmount" to find out,
>>>how it works.
> 
>>>Then you can access the harddisk partitions at their respective mount
>>>points.
> 
>>>wkr,
>>>Thomas.
> 
> 
>>>Matteo schrieb:
> 
> 
>>>>Hi 
>>>>Joe says to me ask you how I can save a file on hard disk? if I have to
> 
>>set
> 
> 
>>>>something in my linux's grub?
> 
>>>>below the previous email sent to Joel.
> 
>>>>Thanks in advance 
> 
>>>>Matteo
> 
>>>>Scrive Joel Sherrill <joel.sherrill at oarcorp.com>:
> 
> 
> 
>>>>>Matteo wrote:
> 
> 
> 
>>>>>>Hi
>>>>>>
>>>>>>I'm trying to use the fdopen example of the package example-4.6.99.2
> 
> but
> 
>>>it
> 
> 
>>>>>>doesn't works, It doesn't create the file!
>>>>>>
>>>>>>
> 
>>>>>I could be wrong but I think this one actually was submitted as part of 
>>>>>a bug report and
>>>>>the bug may still be outstanding.  It may be fixed.  I just don't 
>>>>>remember.  See below for
>>>>>the more likely case.
> 
> 
> 
>>>>>>But I can launch the hello world example and I create some simple posix
> 
>>>>>program 
> 
> 
>>>>>>with rtems yet so I think to have configured it well.
>>>>>>So what can be the problem ?
>>>>>>May be when I launch the fdopen example I have to set some particular
> 
>>>>>privilege 
> 
> 
>>>>>>in the "grub"(my linux boot loader) to allow it to write on the hard
> 
>>>disk?
> 
> 
>>>>>this 
> 
> 
>>>>>>is only my newbye's opinion..
>>>>>>
>>>>>>
>>>>>>
> 
>>>>>Ohh.... if you are doing anything with the hard disk, then there is some
> 
>>>>>filesystem specific
>>>>>configuration to get things right.  The example code is only going to 
>>>>>work with the IMFS
>>>>>which is a RAM based filesystem.
> 
>>>>>Ask on the list so someone list Thomas can point you to an example
> 
> setup.
> 
> 
> 
>>>>>>Thanks in advantage
>>>>>>
>>>>>>Matteo
>>>>>>
>>>>>>
>>>>>>
> 
> 
> 
> 
> 
> 
>>>--
>>>--------------------------------------------
>>>IMD Ingenieurbuero fuer Microcomputertechnik
>>>Thomas Doerfler           Herbststrasse 8
>>>D-82178 Puchheim          Germany
>>>email:    Thomas.Doerfler at imd-systems.de
>>>PGP public key available at:
>>>    http://www.imd-systems.de/pgpkey_en.html
> 
>>--
>>--------------------------------------------
>>IMD Ingenieurbuero fuer Microcomputertechnik
>>Thomas Doerfler           Herbststrasse 8
>>D-82178 Puchheim          Germany
>>email:    Thomas.Doerfler at imd-systems.de
>>PGP public key available at:
>>     http://www.imd-systems.de/pgpkey_en.html
> 
> --
> --------------------------------------------
> IMD Ingenieurbuero fuer Microcomputertechnik
> Thomas Doerfler           Herbststrasse 8
> D-82178 Puchheim          Germany
> email:    Thomas.Doerfler at imd-systems.de
> PGP public key available at:
>      http://www.imd-systems.de/pgpkey_en.html

- --
- --------------------------------------------
IMD Ingenieurbuero fuer Microcomputertechnik
Thomas Doerfler           Herbststrasse 8
D-82178 Puchheim          Germany
email:    Thomas.Doerfler at imd-systems.de
PGP public key available at:
     http://www.imd-systems.de/pgpkey_en.html
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