Proc directory on CompactFlash

Murray R. Van Luyn schrieb:




Only the /proc directory itself should exist (empty) on your root drive.
Then say "mount -t proc proc /proc" somewhere in your startup or put the
equivalent line in /etc/fstab if you have that.

The *contents* of /proc are created directly by the kernel whenever it's
accessed - reading a file in proc really connects your user space
program directly to some kernel function that produces its content
on-the-fly. Same for writing - your process gets connected to some
kernel function that takes the data from your application and does
something with it.

So except for the top /proc directory itself, nothing in /proc exists on
any disk.

Thanks Linards. That explains everything nicely.

Regards,
Murray R. Van Luyn.

May be all root (/) system put in RAM or only / and /usr leave on CF

This my example:

#mount -t ext2 /dev/hdc /mnt/cflash

#cd /mnt/cflash
#ls

boot/
usr/
var/

#cd boot/ && ls

grub/
vmlinuz
initrd.gz

boot/ - kernel, initrd image - root system include /proc, /sys, /tmp
                         /bin, /sbin, /lib, /dev
usr/ - all users application
var/ - variable data


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Ex. 2

mount -t tmpfs none /tmp -o rw
mkdir -p /tmp/proc
mount -t proc none /tmp/proc -o rw
ln -s /tmp/proc /proc