ahlinc

⚠️ DISCLAIMER

This is an unofficial workaround for compiling OpenZFS on Linux Kernel 7.1.x.

• Use at your own risk: Modifying kernel modules and Secure Boot keys can potentially render your system unbootable if done incorrectly.
• Not affiliated with OpenZFS: This guide is a community contribution and is not endorsed by the OpenZFS project maintainers.
• Backup your data: Always ensure you have a working recovery image before experimenting with kernel modules.

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Replicable Guide: Root-on-ZFS with Kernel 7.1.x on Fedora 43 (Gregory Lee Setup)

ahlinc

Measuring Firecracker boot time

Firecracker comes with an internal way of logging a timestamp that measures time elapsed between the very start of the guest VM and the moment a specific IO port has been written to.

That allows for marking specific moment along the boot process by having code writing to this port.

Artifacts build

Here we're going to measure the time it takes for a Firecracker guest VM to reach userspace. To do so we're going to build 3 components:

ahlinc

Why this document?

I upgraded my iPhone 5s to iOS 10 and could no longer retrieve photos from it. This was unacceptable for me so I worked at achieving retrieving my photos. This document is my story (on Ubuntu 16.04).

The solution is to compile libimobiledevice and ifuse from source.

Audience

Who is this guide intended for?

ahlinc

Common

export OPT=/opt
export BUILDS=/some/where/mini_linux
mkdir -p $BUILDS

Linux kernel