When root on ZFS breaks on Arch Linux

• zfs

  719 10,114 9.6 C

  OpenZFS on Linux and FreeBSD

  

Yup, this popped up for me about a month ago on a Raspberruy Pi system, fortunately not on the root, but still. On ARM the kernel_neon_begin / kernel_neon_end symbols were made GPL only[0] which is quite puzzling on many levels.

The discussion of the reported issue on the OpenZFS GitHub is very educational, both on the maintainers side (useful, sensible), and the other commenters syde (kinda "thermonuclear")[1]

In the meantime I just downgraded the kernel as well, fortunately still had it in the pacman cache; then pinned it for now.

Sent an email to to the patch creator / signer-off too, to feed back on that "this is not expected to be disruptive to existing users." part of the commit (as in [0]).

[0]: https://lore.kernel.org/all/20221107170747.276910-1-broonie@...

[1]: https://github.com/openzfs/zfs/issues/14555

• zfsbootmenu

  161 752 9.2 Shell

  ZFS Bootloader for root-on-ZFS systems with support for snapshots and native full disk encryption

  

* 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

• InfluxDB

  www.influxdata.com sponsored

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

• memtest86plus

  93 913 6.8 C

  Official repo for Memtest86+

  

I am not sure what is consensus, but I use this: https://memtest.org/

• archiso-zfs

  10 163 2.6 Shell

  Easily load ZFS kernel module on any Archiso.

The script available there: https://github.com/eoli3n/archiso-zfs makes it extremely easy to add ZFS support to any Arch ISO after it has booted. You can copy any standard ISO to a USB drive, boot off it, then run `curl -s https://raw.githubusercontent.com/eoli3n/archiso-zfs/master/... | bash` and you'll have ZFS support in a few seconds, without having anything to worry about.

• linux-cachyos

  7 580 9.6 Shell

  Archlinux Kernel based on different schedulers and some other performance improvements.

  

The Arch derivative CachyOS[1] has ZFS-enabled kernels by default. And their repos can be added to existing Arch installs[2], so I've found this a nice way of working around the non-ideal state of ZFS integration in Arch. (Plus their kernel choices have other interesting features.)

[1]: https://cachyos.org/

[2]: https://github.com/CachyOS/linux-cachyos#cachyos-repositorie...

• WorkOS

  workos.com sponsored

  The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

  

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