Re: [RFC/PATCH 0/1] ubi: Add ubiblock driver

Thomas Petazzoni
2012-11-21T09:56:52Z

Dear Ricard Wanderlof,

On Wed, 21 Nov 2012 06:28:43 +0100, Ricard Wanderlof wrote:

> I don't want to diminish your work in any way, but what is the point of
> the ubiblock feature? Mtd block devices are really only used in order to
> give the mount/umount commands a block device, and for ubifs the device is
> specified in another way. So I suspect the intended usage for ubiblock is
> something else.

The idea, when David Wagner implemented this, was to be able to use
read-only block filesystems such as squashfs on top of a UBI volume.
squashfs provides an excellent compression ratio, which makes it
interesting.

Best regards,

Thomas
--
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.