3/12/2023 0 Comments Openzfs mountpoint legacy fstabThus these utilities need to be installed first. While the images of Ubuntu-family distributions do contain the required kernel modules, the userspace utilities are not always included. This installation guide is adapted from this ArchWiki article. This guide uses Lubuntu 16.04.2 live image. Many options exist, but the simplest route is to grab a live image of any Ubuntu-family distributions based on 16.04 (Xenial Xerus) or above. One also needs a bootable Linux media that supports ZFS. This guide used the latter, but the steps for configuring the system for ZFS are the same. This can be done either by extra command-line arguments passed to dracut or by a one-line file in /etc// containing add_dracutmodules+="zfs".īefore starting, one needs an archive of a AOSC OS system, one of these archives could be obtained either by downloading from the official AOSC website, or by tarballing an existing installation. dracut does not properly detect Linux installed on ZFS volume and one needs to manually tell it to include the required modules in the initramfs generated.grub-install may fail due to being unable to detect disks, a workaround is documented.In this guide, rEFInd with EFISTUB will be used to boot the system. grub-mkconfig does not yet properly detect Linux installed on ZFS volumes and generate boot parameters, therefore manual configuration (and update, after a kernel upgrade) of boot loader is required, see this example on ArchWiki While generating grub.cfg using grub-mkconfig, you have to add ZPOOL_VDEV_NAME_PATH=1 to the beginning, or GRUB will throw an error: /usr/sbin/grub-probe: error: failed to get canonical path of /dev/. Note: AOSC ships the release branch of ZFS, so this should not be a problem. While grub does have support for reading ZFS, not all feature flags are supported, therefore if one intends to put /boot on a ZFS volume, special precaution is needed when creating the volume, see this section on ArchWiki.zfs does not handle hibernation correctly which will cause the system to hang when resuming from a swap ZFS volume.Thus performance degradation overtime on SSDs will be inevitable. While there are works in progress, no ETA is provided yet. TRIM is not yet supported by the current release of zfs.Instead, AOSC decided to follow a route similar to that of Debian and Ubuntu, to maintain the required modules from this project separately, and a user is required to install them separately from our main repository. Because of this, while it is possible to load all the required sources into the kernel source tree and compile them into the kernel, distributing the product binary would be illegal. The effort of this project was never merged into mainline Kernel as their license (CDDL) is not compatible with that of the Kernel (GPL), and combining them will lead to violation of GPL. ZFS on Linux is one of the projects under the OpenZFS umbrella, which takes form of reloadable kernel modules. However, a community-drive umbrella project, OpenZFS continued to improve the open-source version of ZFS and helps to unify development efforts independent of Oracle. Once proprietary, ZFS was open-sourced along with OpenSolaris project, and the open-source development continued until Sun was bought by Oracle, who dropped the development of OpenSolaris. Originally designed by Sun Microsystems (now Oracle) for their Solaris operating system, ZFS is a combined logical volume manager and filesystem aimed at high availability and scalability. DO NOT COPY AND PASTE COMMANDS WITHOUT KNOWING WHAT YOU ARE DOING! Background § WARNING: This guide assumes you know the details about the Linux booting process. This guide will cover how to deploy AOSC OS onto a ZFS root, and workarounds to certain known issues related to ZFS. Using the DKMS modules, it is possible to install AOSC OS on a ZFS root, if special precautions are taken.
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