zfsbootmenu
dracut
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zfsbootmenu | dracut | |
---|---|---|
161 | 18 | |
745 | 514 | |
6.6% | 4.1% | |
9.2 | 7.9 | |
9 days ago | 7 days ago | |
Shell | Shell | |
MIT License | GNU General Public License v3.0 only |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
zfsbootmenu
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Bash Debugging
We use a couple nice home-grown functions in ZFSBootMenu to help debug things. We have a zdebug logging function that's peppered liberally throughout the code base - https://github.com/zbm-dev/zfsbootmenu/blob/master/zfsbootme...
Hitting ctrl-t on our main menu will, when booting with debug logging enabled, show a screen like this: https://imgur.com/Ge75zkP
We also have a flamegraph profiling mechanism that can be enabled with https://github.com/zbm-dev/zfsbootmenu/blob/master/zfsbootme... . That will dump data to a serial port, which when re-assembled, can be used to produce a graph like https://raw.githubusercontent.com/zbm-dev/zfsbootmenu/master...
Bash is suprisingly flexible.
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Pure Bash Bible
A lot of what's in the Pure Bash Bible is horrifically slow. Many of those things are substantially faster, even when paying the cost of starting a new process, when you use an external and commonly available tool. I wrote a bash performance profiler that outputs data in a format that flamegraph.pl recognizes - it really helped identify where we could improve the performance of ZFSBootMenu.
https://github.com/zbm-dev/zfsbootmenu/releases/tag/v1.12.0
Don't fall in the trap of thinking things have to be written entirely in bash; it's okay to use other tools to help fill in the gaps.
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How do I configure the refind.conf and refind_linux.conf (and or config.yaml (for ZFSBootMenu)) files properly when installing Arch Linux with ZFS Native Encryption?
All release assets, including EFI executables and kernel/initramfs pairs, are signed with signify, which provides a simple method for verifying that the contents of the file are as this project intended. Once you've installed signify (that's left as an exercise, although Void Linux provides the signify package for this purpose), just download the desired assets from the ZFSBootMenu release page, download the file sha256.sig alongside it, and run:
Link: https://github.com/zbm-dev/zfsbootmenu/wiki/Debian-Buster-installation-with-ESP-on-the-zpool-disk
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How to keep Ubuntu from creating a dozen /var subdirectories?
I think the consensus is that you probably shouldn't be installing a ZFS on root using the native installer anymore. They aren't really maintaining the packages that make that work. Instead the suggestion is to go the zfsbootmenu route of installing.
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Ubuntu 23.04 Desktop's New Installer Set To Ship Without OpenZFS Install Support
You can install following instructions at https://openzfs.github.io/openzfs-docs/Getting%20Started/Debian/Debian%20Bullseye%20Root%20on%20ZFS.html which I've automated with https://github.com/HankB/Linux_ZFS_Root/tree/master/Debian. For scripting, you should also look at https://github.com/zbm-dev/zfsbootmenu. I'd probably go that way if I were starting from scratch.
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Void Linux and root-on-ZFS question
ZBM provides an amazingly useful script in it's wiki here. This runs when a new kernel is updated by xbps and it snapshots your system before the kernel is installed. This creates a boot environment, and via the magic of ZFS boot environments, allows you to rollback any kernel update to a known, working configuration.
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When root on ZFS breaks on Arch Linux
* https://docs.oracle.com/cd/E86824_01/html/E54764/beadm-1m.ht...
> A ZFS boot environment is a bootable clone of the datasets needed to boot the operating system. Creating a BE before performing an upgrade provides a low-cost safeguard: if there is a problem with the update, the system can be rebooted back to the point in time before the upgrade.
* https://klarasystems.com/articles/managing-boot-environments...
Or perhaps:
> In essence, ZFSBootMenu is a small, self-contained Linux system that knows how to find other Linux kernels and initramfs images within ZFS filesystems. When a suitable kernel and initramfs are identified (either through an automatic process or direct user selection), ZFSBootMenu launches that kernel using the kexec command.
- I replaced grub with systemd-boot
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Do I need zsys or are there alternatives?
If you want a ZFS root, look at https://zfsbootmenu.org/. If you want it for Ubuntu specifically, consider Sithuk's script which automates it at https://github.com/Sithuk/ubuntu-server-zfsbootmenu .
dracut
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Has anyone setup a private tracker?
The documentation is super minimal, but the livenet module supports torrent files using the live:torrent: URL syntax.
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Dracut kernel_cmdline not working with LVM on LUKS.
I get exactly this error. So it turns out, the decryption depends on a systemd unitsystemd-cryptsetup-generator, which will not read any embedded cmdline parameters, only ones passed in the commandline so when the commandline parameter is asking to decrypt things, it is not generated.
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Tar is an ill-specified format
(source: https://unix.stackexchange.com/a/266090; also mentioned there is a skipcpio tool: https://github.com/dracutdevs/dracut/blob/master/skipcpio/sk...)
This hack would also work for extracting concatenating tarballs (without GNU tar's --ignore-zeros option). One annoyance is the warning about the end of the archive.
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Arch Linux - News: Moving to Zstandard images by default on mkinitcpio
Kernel modules zstd when? Is dracut the only blocker here?
What are some alternatives?
mkinitcpio - Arch Linux initramfs generation tools (read-only mirror)
root-on-zfs-systemdboot - Dual-boot Root-on-ZFS config for Debian w/ systemd-boot
archiso-zfs - Easily load ZFS kernel module on any Archiso.
yubikey-full-disk-encryption - Use YubiKey to unlock a LUKS partition
ramroot - Load root file system to ram during boot.
zectl - ZFS Boot Environment manager for Linux
systemd - The systemd System and Service Manager
nonguix
zfs - OpenZFS on Linux and FreeBSD
voidvault - Bootstrap Void with FDE
squashfs-tools-ng - A new set of tools and libraries for working with SquashFS images
wireguard-initramfs - Use dropbear over wireguard.