Remove zfs-utils from IgnorePkg; Reorganize page
Signed-off-by: Maurice Zhou <ja@apvc.uk>
This commit is contained in:
Maurice Zhou
committed by
Richard Laager
Richard Laager
parent
5b2a3ec69d
commit
06387ef96f
@@ -699,7 +699,7 @@ System Configuration
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#. Ignore kernel updates::
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sed -i 's/#IgnorePkg/IgnorePkg/' /etc/pacman.conf
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sed -i "/^IgnorePkg/ s/$/ ${INST_LINVAR} ${INST_LINVAR}-headers zfs-${INST_LINVAR} zfs-utils/" /etc/pacman.conf
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sed -i "/^IgnorePkg/ s/$/ ${INST_LINVAR} ${INST_LINVAR}-headers zfs-${INST_LINVAR}/" /etc/pacman.conf
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Kernel will be manually updated, see Getting Started.
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@@ -21,37 +21,44 @@ Overview
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Due to license incompatibility,
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ZFS support is provided by out-of-tree kernel modules.
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Kernel modules are specific to each kernel package, i.e.,
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ZFS kernel module built for ``linux-5.11.1.arch1-1`` is incompatible
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with ``linux-5.11.2.arch1-1`` kernel.
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ZFS kernel modules can be installed with:
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ZFS kernel modules can be obtained by
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- ``zfs-linux*``, provides prebuilt ZFS kernel modules
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- ``zfs-dkms``, provides Dynamic Kernel Module Service support
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- installing ``zfs-linux*``, which contains prebuilt ZFS kernel modules;
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- installing ``zfs-dkms`` and build ZFS kernel modules on-the-fly.
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zfs-linux*
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~~~~~~~~~~
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``zfs-linux*`` packages are the most
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risk-free way to obtain ZFS support.
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``zfs-linux*`` packages are the easiest and
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most risk-free way to obtain ZFS support.
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However, they hard-depend on a specific kernel
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and will block kernel updates if the corresponding
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``zfs-linux*`` package is not available.
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Prebuilt modules are kernel-specific, i.e.,
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module built for 5.11.1 is incompatible
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with 5.11.2. For this reason, ``zfs-linux*``
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depends on a particular kernel version.
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Example: if linux-5.11.2 is available, but
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``zfs-linux-5.11.2`` is not available, you can not
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upgrade to linux-5.11.2 until ``zfs-linux-5.11.2``
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came out.
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``zfs-linux*`` is recommended for users who are using stock kernels
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from official Arch Linux repo and can accept kernel update delays for
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up to a few days.
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zfs-dkms
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~~~~~~~~
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``zfs-dkms`` package is the more versatile choice.
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After installation, Dynamic Kernel Module Support
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will automatically build ZFS kernel modules for installed
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kernels and not interfere with kernel updates.
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However, the modules are somewhat slow to build and more
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importantly, there will be little warning message when the
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build fails. Also, as ``zfs-dkms`` does not perform checks against
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kernel version, this must be done by user themselves for major kernel updates
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such as ``5.10 -> 5.11``.
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kernels and does not interfere with kernel updates.
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``zfs-linux*`` is recommended for users who are using stock kernels
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from official Arch Linux repo and can accept kernel update delays.
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Such delays should be no more than a few days.
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However, there are several disadvantages:
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``zfs-dkms`` is required for experienced users who are using custom kernels or
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want to follow the latest kernel updates. This package is also required for derivative
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- somewhat slow to build
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- little warning when DKMS build fails
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- does not check kernel compatibility, manual checks required
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``zfs-dkms`` is required for users who are using custom kernels or
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do not accept delays for kernel updates. This package is also required for derivative
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distros such as `Artix Linux <https://artixlinux.org>`__.
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Installation
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@@ -123,7 +130,7 @@ For other kernels or Arch-based distros, use zfs-dkms package.
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#. Ignore kernel updates::
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sed -i 's/#IgnorePkg/IgnorePkg/' /etc/pacman.conf
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sed -i "/^IgnorePkg/ s/$/ ${INST_LINVAR} ${INST_LINVAR}-headers zfs-${INST_LINVAR} zfs-utils/" /etc/pacman.conf
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sed -i "/^IgnorePkg/ s/$/ ${INST_LINVAR} ${INST_LINVAR}-headers zfs-${INST_LINVAR}/" /etc/pacman.conf
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#. To update kernel, run::
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@@ -133,9 +140,6 @@ For other kernels or Arch-based distros, use zfs-dkms package.
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zfs-dkms package
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~~~~~~~~~~~~~~~~
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Check kernel compatibility
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^^^^^^^^^^^^^^^^^^^^^^^^^^
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#. Check kernel variant::
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INST_LINVAR=$(sed 's|.*linux|linux|' /proc/cmdline | sed 's|.img||g' | awk '{ print $1 }')
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@@ -144,6 +148,10 @@ Check kernel compatibility
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INST_LINVER=$(pacman -Qi ${INST_LINVAR} | grep Version | awk '{ print $3 }')
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If you are updating kernel, use the following command::
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INST_LINVER=$(pacman -Syi ${INST_LINVAR} | grep Version | awk '{ print $3 }')
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#. Check zfs-dkms package version::
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DKMS_VER=$(pacman -Syi zfs-dkms | grep 'Version' | awk '{ print $3 }' | sed 's|-.*||')
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@@ -158,7 +166,7 @@ Check kernel compatibility
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echo ${INST_LINVER%%-*}
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# 5.10.17 # supported
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If it's not supported, see `Install zfs-dkms compatible kernel`_.
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If it's not supported, skip to **Install zfs-dkms compatible kernel**.
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Otherwise, continue to next step.
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#. Install kernel headers::
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@@ -170,15 +178,23 @@ Check kernel compatibility
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pacman -Sy zfs-dkms
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If you are updating kernel, use the following command::
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pacman -Sy $INST_LINVAR $INST_LINVAR-headers zfs-dkms
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#. Ignore kernel package from updates::
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sed -i 's/#IgnorePkg/IgnorePkg/' /etc/pacman.conf
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sed -i "/^IgnorePkg/ s/$/ ${INST_LINVAR} ${INST_LINVAR}-headers/" /etc/pacman.conf
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Kernel must be manually updated, see `Kernel update`_.
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To update kernel, go throught the above procedure
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again.
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Install zfs-dkms compatible kernel
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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#. Install zfs-dkms compatible kernel
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If the currently installed kernel is not
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compatible with ZFS, a kernel downgrade
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is needed.
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#. Choose kernel variant. Available variants are:
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@@ -219,26 +235,19 @@ Install zfs-dkms compatible kernel
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sed -i 's/#IgnorePkg/IgnorePkg/' /etc/pacman.conf
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sed -i "/^IgnorePkg/ s/$/ ${INST_LINVAR} ${INST_LINVAR}-headers/" /etc/pacman.conf
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Kernel must be manually updated, see `Kernel update`_.
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Kernel must be manually updated, see above.
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Kernel update
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^^^^^^^^^^^^^
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Live Image
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----------
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#. `Check kernel compatibility`_.
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Latest live image might contain a kernel incompatible with
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ZFS. Check the compatibility with the following procedure.
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#. Replace check kernel version with ``-Syi``::
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Alternatively, an unofficial Arch Linux live
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image with ZFS is available at
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`here <https://gitlab.com/m_zhou/archiso>`__.
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Use at your own discretion.
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INST_LINVER=$(pacman -Syi ${INST_LINVAR} | grep Version | awk '{ print $3 }')
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#. If compatible, update kernel and headers with::
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pacman -Sy $INST_LINVAR $INST_LINVAR-headers
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Do not update if the kernel is not compatible
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with OpenZFS.
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Check Live Image Compatibility
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------------------------------
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#. Choose a mirror::
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https://archlinux.org/mirrorlist/all/
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