zfsbootmenu
zsys
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zfsbootmenu | zsys | |
---|---|---|
161 | 15 | |
756 | 298 | |
5.0% | 1.0% | |
9.2 | 6.2 | |
7 days ago | 9 days ago | |
Shell | Go | |
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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Some preinstalled options/defaults suggestion
If instead of "opensuse" you're asking for bootloader as grub can't boot from zfs, then, like i metnioned, i don't use grub2, i uninstalled it, instead i'm using https://github.com/zbm-dev/zfsbootmenu
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ZFSBootMenu how to increase font resolution?
I thought the following was supposed to fix this issue: https://github.com/zbm-dev/zfsbootmenu/commit/84da18e64ebcc0c483e7b2c7d3972f7d91784e63
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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:
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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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Cloned my root dataset and now it won't boot because NTP daemon can't reach time servers
Glad to hear that everything is working for you! I've opened a PR that adds a warning about this condition - it should likely make it into 2.2.0.
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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.
* https://github.com/zbm-dev/zfsbootmenu
zsys
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How to maintain 20% minimum free space on bpool
From this bug report on github, here is a clear explanation of the problem:
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The Future of ZFS on Ubuntu Desktop Is Not Looking Good
This is a good thing for ZFS and public perception of ZFS. Ubuntu has made some very poor choices with how they've integrated ZFS -
* zsys has both implementation and design flaws. They utilize two zpools - one with limited feature flags that GRUB can use and one general pool, and then try to tightly couple datasets between those two pools while coordinating snapshots. zsys routinely runs a system out of space due to not cleaning up snapshots. It's been known to destroy user data as well.
https://github.com/ubuntu/zsys/issues/196
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Desktop OS with ZFS
Example: https://github.com/ubuntu/zsys/issues/155
- Don't use ZSYS (on Ubuntu 22.04)
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Backup Solution: fully automated, complete system backup, incremental and with web GUI functionality (snapshots / history)?
Heard of it, but I have no idea how it works and if I must install ubuntu server completely new. After a bit googling it seems dead? “It seems the project has been dead for months now. What going on?” https://github.com/ubuntu/zsys/issues/213
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Ubuntu 22.04 Root on ZFS
Ubuntu isn't my preferred OS these days, but I've had excellent experiences with it's ZFS root installs as well as it's included zsys: https://github.com/ubuntu/zsys
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zfs on root with 22.04 without zsys
Re: things I've actually dealt with, see -- #172
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Moving rpool/USERDATA to separate pool
I even filed a very polite GH issue about how zsys doesn't handle other systems/sanoid snapshots well, to which I got no response. However, a previous response to a user with the same issue was "Turn that other method of snapshot-ing off and delete your other snapshots" which, I'm sorry, just doesn't make any sense to say to any ZFS user -- "Pound sand and delete some of your data, then maybe it will work." Say what?
- Canonical puts zsys on life support (2.5 Admins)
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Help with ZFS on Ubuntu
https://github.com/ubuntu/zsys/issues/112 - This could be an incompatibility with the way docker stores volumes, but this looks like it should've been fixed a while ago?
What are some alternatives?
root-on-zfs-systemdboot - Dual-boot Root-on-ZFS config for Debian w/ systemd-boot
zectl - ZFS Boot Environment manager for Linux
archiso-zfs - Easily load ZFS kernel module on any Archiso.
ubuntu-server-zfsbootmenu
ramroot - Load root file system to ram during boot.
simple-ubuntu-installer - simple encrypted zfs ubuntu installer
dracut - dracut the event driven initramfs infrastructure
zsysctl-manual-gc - Manual zsys garbage collection script.
nix
nonguix
ALEZ - Arch Linux Easy ZFS installer