Re: CBD Compressed Block Device, New embedded block device

[Matt Mackall]

On Sun, Jan 22, 2006 at 12:46:52AM -0800, Shaun Savage wrote:
> HI
> 
> Here is a patch for 2.6.14.5 of CBD
> CBD is a compressed block device that is designed to shrink the file 
> system size to 1/3 the original size.  CBD is a block device on a file 
> system so, it also allows for in-field upgrade of file system.  If 
> necessary is also allows for secure booting, with a GRUB patch.

How does it work? Does it remap one block device and present it as a
new one? Or does it work more like loopback? In either case, we might
prefer a device mapper plug-in.

Please add a brief write-up under Documentation/, including a general
overview and example usage so we can get some idea of what this
actually does. Or URLs to existing docs, of course.

-- 
Mathematics is the supreme nostalgia of our time.
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