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* Firecracker: Make root disk configurableColin Percival2023-08-071-2/+3
| | | | | | | | | | | | | Add a FCROOTFSSZ variable which defaults to "1g" which controls the size of the Firecracker root filesystem; it can be set as low as "300m" at present. Allow WITHOUTS to be overridden if users want to build a root disk with more -- or fewer -- parts of the FreeBSD base system. Reviewed by: gjb Sponsored by: https://www.patreon.com/cperciva Differential Revision: https://reviews.freebsd.org/D41041
* release: Add code to make FreeBSD/FirecrackerColin Percival2023-07-101-0/+58
This just stages the kernel and builds a stripped-down rootfs for use with the Firecracker VMM. At some point in the future the release engineering team might start publishing these, but initially it's just here to simplify FreeBSD/Firecracker development and testing. Note that the rootfs generated: * Uses an IP address of 10.0.0.2 with a gateway of 10.0.0.1, * Has sshd enabled, * Has user "freebsd" with password "freebsd" and a root password of "root", and * Is 1 GB in size (but has growfs enabled). All of those are subject to change without notice; anyone intending to use FreeBSD/Firecracker in anything remotely resembling a production environment should talk to cperciva first. Reviewed by: gjb Sponsored by: https://www.patreon.com/cperciva Differential Revision: https://reviews.freebsd.org/D40956