On Sun, Jan 01, 2023 at 06:32:55PM +0100, Bernd Petrovitsch wrote:
Hi all!
On 07/10/2022 04:32, Chan Kim wrote: [...]
I'm using initramfs.cpio.gz for initial file system image. I embed it in the kernel Image file. After linux boots, when I'm in the shell, I can create files. But I'm curious how much the file system can grow.
Why not just try it once;-)
ramdisks are static - so if you mount ram0 and ramdisk_size=8192 then your ramdisk is occupying 8MB and that will be the hard limit at least on some architectures (x86, I think also arm).
I remember somewhere reading that the initramdisk is made and the initramfs archive is extracted in the ramdisk.
On some architectures you can pass the size as kernel parameter ramdisk_size=#kb and that will then set the size of the ramdisk when you mount it (at boot or during normaal operations). As I did not find what archtiecture you are refering to this might help - grep for ramdisk_size in Documentations and you should have it. E.g. for arm it is marked as obsolete (arm/boot.rst) but still seems to be supported with CONFIG_DEPRECATED_PARAM_STRUCT set. Wonder what it is being replaced by. thx! hofrat