Two new versions of OpenZFS fix long-hidden corruption bug

The bug that was very occasionally corrupting data on file copies in OpenZFS 2.2.0 has been identified and fixed, and there's a fix for the previous OpenZFS release too. The OpenZFS development team have put out not one but two new releases of the open-source cross-platform filesystem for Linux and FreeBSD. Version 2.2.2 fixes the problem that showed up in the latest version, which is included in FreeBSD 14 as well as several Linux distros, including Ubuntu 23.10. There's also a new release in the previous version of OpenZFS: version 2.1.14 which applies to FreeBSD back to version 12. This was necessary because while, as we reported a week ago, it was OpenZFS 2.2.0 that brought the issue to light and made it visible, it didn't actually cause the problem. It merely exposed an underlying bug which had been around for years: OpenZFS 2.2.0's new, faster copy function simply made the existing issue much more likely to happen. The FreeBSD project has published an errata notice, and made fixes available for FreeBSD 12, 13 and 14. The investigation that's been going on since then has revealed more. For instance, the bug was also confirmed in Illumos, the open-source fork of OpenSolaris which has continued development since Oracle killed off the open source project in 2010. Illumos is itself the basis of several OpenSolaris-based distributions. As amendments in the release notes for both these versions clarify, it's also slightly worse than it looked last week, when we wrote that: For...