[OpenWrt-Devel] [PATCH] add ubifs filesystem for image building system

[Felix Fietkau]

On 2016-01-03 22:17, Daniel Golle wrote:
> On Sat, Jan 02, 2016 at 04:02:58PM +0100, Felix Fietkau wrote:
>> On 2016-01-02 15:11, RhoYounJae wrote:
>> > Currently, the devices which actually uses ubifs filesystem uses squashfs filesystem
>> > Thus openwrt binary image have a wrong squashfs- prefix not ubifs- which gives user confusion
>> > This patch add ubifs filesystem for image building system but not for legacy system
>> You're right about one thing: These images do use ubifs, however only as
>> an overlay. The base filesystem is squashfs, just like on all those NOR
>> flash based devices (which use jffs2 as overlay).
>> 
>> I might accept a patch that adds ubifs as an option, if you can convince
>> me that it's actually useful, but replacing the squashfs images with
>> ubifs ones is not an option.
> 
> Similar to having a JFFS2 read-write-mounted rootfs without any overlay
> can make sense in certain (rare) scenaria. I intended to use a ubifs
> rootfs in those situations on devices which need UBI.
> There already is a way to generate images having ubifs rootfs, see e.g.
> https://dev.openwrt.org/browser/trunk/target/linux/oxnas/image/Makefile#L90
Not a very good example, it still uses the old image building code ;)

- Felix
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