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29 lines
1.1 KiB
Markdown
29 lines
1.1 KiB
Markdown
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How to setup a zfs root filesystem using dracut
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1) Install the zfs-dracut package. This package adds a zfs dracut module
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to the /usr/share/dracut/modules.d/ directory which allows dracut to
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create an initramfs which is zfs aware.
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2) Set the bootfs property for the bootable dataset in the pool. Then set
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the dataset mountpoint property to '/'.
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$ zpool set bootfs=pool/dataset
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$ zfs set mountpoint=/ pool/dataset
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Alternately, legacy mountpoints can be used by setting the 'root=' option
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on the kernel line of your grub.conf/menu.lst configuration file. Then
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set the dataset mountpoint property to 'legacy'.
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$ grub.conf/menu.lst: kernel ... root=ZFS=pool/dataset
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$ zfs set mountpoint=legacy pool/dataset
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3) To set zfs module options put them in /etc/modprobe.d/zfs.conf file.
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The complete list of zfs module options is available by running the
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_modinfo zfs_ command. Commonly set options include: zfs_arc_min,
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zfs_arc_max, zfs_prefetch_disable, and zfs_vdev_max_pending.
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4) Finally, create your new initramfs by running dracut.
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$ dracut --force /path/to/initramfs kernel_version
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