@Nagarjuna-Reddy just to confirm, you're using the Omega2S Development Kit with 8 GB eMMC?
With the default firmware on your Omega2S+, all of the packages and changes you make to the filesystem will be on the internal flash.
The eMMC storage is just external storage that's mounted automatically. No changes are made to this filesystem unless you specifically go to
/mnt/mmmcblk0p1 and make changes there.
You can manually unmount it by running
Btw, the automatic mounting is handled by the
fstab utility. Read more about it here
And to answer your questions:
what is this
tmpfs is a temporary filesystem running on the RAM. This is a function of OpenWRT. Learn more here: https://openwrt.org/docs/techref/file_system
why my flash memory it is showing very less MB. but we have 32MB flash memory.
The internal flash memory is 32MB. You're not seeing the full 32MB because of how the flash is partitioned. Learn more about that here:
Note: the examples given in the links above don't match 1-to-1 with the Omega2, but they will illustrate the principle