Re: CBD Compressed Block Device, New embedded block device

From: Shaun Savage
Date: Sun Jan 22 2006 - 08:31:37 EST


Hi

Compression is just one feature. Each partition is wrapped in a package that has a header. even the kernel and boot loader are wrapped in the package. Each package can be hashed and signed. There is a patch for GRUB that boots CBD. GRUB patch does 3 things, boot the kernel, find the latest version of each package, verify hash and signature. This allow for in robust field update of packages.

shaun

Pavel Machek wrote:

On Ne 22-01-06 00:46:52, 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.



What does compression have to do with secure booting?





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