Ramdisk trivial question

Ramdisk trivial question

[Ing.Gianfranco Morandi]

Dear friends,

in our project we have always used the NFS to run linux over an 8260 custom
board. Now since the activity is almost stable we have tried to build the
root filesystem on ramdisk. Obviously we have followed all the main rules
which are contained into several good books, but an important choice is
always left to the user: " what are the components of filesystem?". The
answer to this of course depend on several factors which are not the scope
of this e-mail.

The question is: The ELDK 2.01 package (which is currently being used in our
system) is too large to be fitted into a ramdisk, while the minimum
filesystem does not allow to be used in our midrange application. Does
anybody have or can indicate where can we find an almost complete filesystem
scheme (for instance based on the ELDK packages)?

Any help would be apreciated

Many thanks

Gianfranco


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Re: Ramdisk trivial question

[Jaap-Jan Boor]

Hi Gianfranco,

Isn't busybox a good option? A large part of your ramdisk
is filled with binaries and libraries (glibc is big)
which can be included in a single static binary (busybox)

Jaap-Jan

On Mon, 2003-11-24 at 11:25, Ing.Gianfranco Morandi wrote:
> Dear friends,
>
> in our project we have always used the NFS to run linux over an 8260 custom
> board. Now since the activity is almost stable we have tried to build the
> root filesystem on ramdisk. Obviously we have followed all the main rules
> which are contained into several good books, but an important choice is
> always left to the user: " what are the components of filesystem?". The
> answer to this of course depend on several factors which are not the scope
> of this e-mail.
>
> The question is: The ELDK 2.01 package (which is currently being used in our
> system) is too large to be fitted into a ramdisk, while the minimum
> filesystem does not allow to be used in our midrange application. Does
> anybody have or can indicate where can we find an almost complete filesystem
> scheme (for instance based on the ELDK packages)?
>
> Any help would be apreciated
>
> Many thanks
>
> Gianfranco
>
>


** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

Re: Ramdisk trivial question

[Wolfgang Denk]

Dear Gianfranco,

in message <005601c3b275$39446fd0$0700a8c0@pc005> you wrote:
>
> The question is: The ELDK 2.01 package (which is currently being used in our
> system) is too large to be fitted into a ramdisk, while the minimum
> filesystem does not allow to be used in our midrange application. Does

What do you mean with "the minimum filesystem does not  allow  to  be
used" ?

> anybody have or can indicate where can we find an almost complete filesystem
> scheme (for instance based on the ELDK packages)?

The ELDK contains the SELF package  (SELF  =  Simple  Embedded  Linux
Framework)  which  is  intended  as  a  building  stone  for your own
application images. Instructions how to add files and/or  change  the
size  of  the  filesystem and how to generate different image formats
(ramdisk, cramfs, JFFS2) can be fund in the DULG. See especially

http://www.denx.de/twiki/bin/view/DULG/HowToIncreaseSizeOfRamdisk
http://www.denx.de/twiki/bin/view/DULG/HowToAddFiles

Best regards,

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
...when fits of creativity run strong, more than  one  programmer  or
writer  has  been  known to abandon the desktop for the more spacious
floor.                                             - Fred Brooks, Jr.

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