Alpine: Use ZFS for /boot, updated bootloader instructions
Signed-off-by: Maurice Zhou <ja@apvc.uk>
This commit is contained in:
Maurice Zhou
committed by
George Melikov
George Melikov
parent
82988571d1
commit
b35065b4fc
@@ -36,8 +36,21 @@ Preparation
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ssh root@192.168.1.19
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#. Configure NTP client for time synchronization::
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setup-ntp chrony
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#. Pick a mirror from `Alpine Mirrors <https://mirrors.alpinelinux.org/>`__
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and add it to package manager configuration::
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tee -a /etc/apk/repositories <<EOF
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https://dl-5.alpinelinux.org/alpine/latest-stable/community/
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https://dl-5.alpinelinux.org/alpine/latest-stable/main/
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EOF
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#. Throughout this guide, we use predictable disk names generated by udev::
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apk update
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apk add eudev
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setup-udev
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@@ -59,21 +72,8 @@ Preparation
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DISK='/dev/disk/by-id/disk1'
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#. Configure NTP client for time synchronization::
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setup-ntp chrony
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#. Pick a mirror from `Alpine Mirrors <https://mirrors.alpinelinux.org/>`__
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and add it to package manager configuration::
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tee -a /etc/apk/repositories <<EOF
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https://dl-5.alpinelinux.org/alpine/latest-stable/community/
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https://dl-5.alpinelinux.org/alpine/latest-stable/main/
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EOF
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#. Install ZFS support and partition tool::
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apk update
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apk add zfs zfs-lts sgdisk e2fsprogs
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modprobe zfs
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@@ -37,9 +37,41 @@ System Installation
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#. Create boot partition::
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for i in ${DISK}; do
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mkfs.ext4 -F $i-part2
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done
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tee -a /root/grub2 <<EOF
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# Features which are supported by GRUB2
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async_destroy
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bookmarks
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embedded_data
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empty_bpobj
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enabled_txg
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extensible_dataset
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filesystem_limits
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hole_birth
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large_blocks
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lz4_compress
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spacemap_histogram
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EOF
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zpool create \
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-o compatibility=/root/grub2 \
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-o ashift=12 \
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-o autotrim=on \
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-O acltype=posixacl \
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-O canmount=off \
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-O compression=lz4 \
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-O devices=off \
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-O normalization=formD \
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-O relatime=on \
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-O xattr=sa \
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-O mountpoint=/boot \
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-R /mnt \
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bpool \
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mirror \
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$(for i in ${DISK}; do
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printf "$i-part2 ";
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done)
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If not using a multi-disk setup, remove ``mirror``.
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#. Create root pool::
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@@ -91,14 +123,17 @@ System Installation
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zfs create -o canmount=off -o mountpoint=/var rpool/alpine/var
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zfs create -o canmount=on rpool/alpine/var/lib
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zfs create -o canmount=on rpool/alpine/var/log
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#. Mount /boot::
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mkdir -p /mnt/boot
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mount -t ext4 $(echo $DISK | cut -f1 -d\ )-part2 /mnt/boot/
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zfs create -o canmount=off -o mountpoint=none bpool/alpine
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zfs create -o canmount=on -o mountpoint=/boot bpool/alpine/root
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#. Format and mount ESP::
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for i in ${DISK}; do
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mkfs.vfat -n EFI ${i}-part1
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mkdir -p /mnt/boot/efis/${i##*/}-part1
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mount -t vfat ${i}-part1 /mnt/boot/efis/${i##*/}-part1
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done
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mkdir -p /mnt/boot/efi
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mount -t vfat $(echo $DISK | cut -f1 -d\ )-part1 /mnt/boot/efi
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@@ -124,22 +159,6 @@ System Installation
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chroot /mnt /usr/bin/env DISK=$DISK sh
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#. Apply GRUB workaround::
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echo 'export ZPOOL_VDEV_NAME_PATH=YES' >> /etc/profile.d/zpool_vdev_name_path.sh
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source /etc/profile.d/zpool_vdev_name_path.sh
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sed -i "s|rpool=.*|rpool=rpool|" /etc/grub.d/10_linux
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sed -i 's|stat -f -c %T /|echo zfs|' /usr/sbin/grub-mkconfig
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This workaround needs to be applied for every GRUB update, as the
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update will overwrite the changes.
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#. Generate GRUB menu::
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grub-mkconfig -o /boot/grub/grub.cfg
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#. Rebuild initrd::
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mkdir -p /etc/zfs
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@@ -172,13 +191,49 @@ System Installation
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sed -i 's|,posixacl|,zfsutil,posixacl|' /etc/fstab
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#. Apply GRUB workaround::
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echo 'export ZPOOL_VDEV_NAME_PATH=YES' >> /etc/profile.d/zpool_vdev_name_path.sh
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source /etc/profile.d/zpool_vdev_name_path.sh
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# GRUB fails to detect rpool name, hard code as "rpool"
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sed -i "s|rpool=.*|rpool=rpool|" /etc/grub.d/10_linux
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# BusyBox stat does not recognize zfs, replace fs detection with ZFS
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sed -i 's|stat -f -c %T /|echo zfs|' /usr/sbin/grub-mkconfig
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# grub-probe fails to identify fs mounted at /boot
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sed -i "s|GRUB_DEVICE_BOOT=.*|GRUB_DEVICE_BOOT=$(echo $DISK | cut -f1 -d\ )-part2|" /usr/sbin/grub-mkconfig
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This workaround needs to be applied for every GRUB update, as the
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update will overwrite the changes.
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#. Install GRUB::
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export ZPOOL_VDEV_NAME_PATH=YES
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mkdir -p /boot/efi/alpine/grub-bootdir/i386-pc/
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mkdir -p /boot/efi/alpine/grub-bootdir/x86_64-efi/
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for i in ${DISK}; do
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grub-install --target=i386-pc $i
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grub-install --target=i386-pc --boot-directory \
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/boot/efi/alpine/grub-bootdir/i386-pc/ $i
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done
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grub-install --target x86_64-efi --bootloader-id alpine --removable
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grub-install --target x86_64-efi --boot-directory \
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/boot/efi/alpine/grub-bootdir/x86_64-efi/ --efi-directory \
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/boot/efi --bootloader-id alpine --removable
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#. Generate GRUB menu::
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grub-mkconfig -o /boot/efi/alpine/grub-bootdir/x86_64-efi/grub/grub.cfg
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grub-mkconfig -o /boot/efi/alpine/grub-bootdir/i386-pc/grub/grub.cfg
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#. For both legacy and EFI booting: mirror ESP content::
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ESP_MIRROR=$(mktemp -d)
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cp -r /boot/efi/EFI $ESP_MIRROR
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for i in /boot/efis/*; do
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cp -r $ESP_MIRROR/EFI $i
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done
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rm -rf $ESP_MIRROR
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#. Unmount filesystems::
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@@ -193,11 +248,10 @@ System Installation
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Disconnect the live media and other non-boot storage devices.
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Due to missing support of predictable device names in initrd,
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Alpine Linux will mount whichever disk appears to be /dev/sda or /dev/nvme0
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at /boot and /boot/efi at boot.
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at /boot/efi at boot.
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Root filesystem at / is ZFS and imported via pool name thus not affected by the above restriction.
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Root filesystem at / and /boot are ZFS and imported via pool name thus not affected by the above restriction.
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#. Post-install:
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#. Setup mirroring of /boot partition and /boot/efi via dd.
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#. Setup swap.
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@@ -50,11 +50,6 @@ Preparation
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INST_PARTSIZE_RPOOL=
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#. Check kernel version::
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uname -r
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#5.18.7-arch1-1
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#. Add ZFS repo::
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curl -L https://archzfs.com/archzfs.gpg | pacman-key -a -
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@@ -70,6 +65,11 @@ Preparation
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Include = /etc/pacman.d/mirrorlist-archzfs
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EOF
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#. Check kernel version::
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uname -r
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#5.18.7-arch1-1
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#. Find a ZFS package compatible with the kernel:
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Search kernel version string (e.g. 5.18.7) in both pages:
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@@ -118,7 +118,8 @@ System Installation
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Create boot dataset::
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zfs create -o canmount=on -o mountpoint=/boot bpool/archlinux
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zfs create -o canmount=off -o mountpoint=none bpool/archlinux
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zfs create -o canmount=on -o mountpoint=/boot bpool/archlinux/root
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#. Format and mount ESP::
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@@ -6,40 +6,6 @@ Bootloader
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.. contents:: Table of Contents
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:local:
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Apply workarounds
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~~~~~~~~~~~~~~~~~~~~
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Currently GRUB has multiple compatibility problems with ZFS,
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especially with regards to newer ZFS features.
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Workarounds have to be applied.
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#. grub-probe fails to get canonical path
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When persistent device names ``/dev/disk/by-id/*`` are used
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with ZFS, GRUB will fail to resolve the path of the boot pool
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device. Error::
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# /usr/bin/grub-probe: error: failed to get canonical path of `/dev/virtio-pci-0000:06:00.0-part3'.
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Solution::
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echo 'export ZPOOL_VDEV_NAME_PATH=YES' >> /etc/profile.d/zpool_vdev_name_path.sh
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source /etc/profile.d/zpool_vdev_name_path.sh
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#. Pool name missing
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See `this bug report <https://savannah.gnu.org/bugs/?59614>`__.
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Root pool name is missing from ``root=ZFS=rpool_$INST_UUID/ROOT/default``
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kernel cmdline in generated ``grub.cfg`` file.
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A workaround is to replace the pool name detection with ``zdb``
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command::
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sed -i "s|rpool=.*|rpool=\`zdb -l \${GRUB_DEVICE} \| grep -E '[[:blank:]]name' \| cut -d\\\' -f 2\`|" /etc/grub.d/10_linux
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Caution: this fix must be applied after every GRUB update and before generating the menu.
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Install GRUB
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~~~~~~~~~~~~~~~~~~~~
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#. Create empty cache file and generate initrd::
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rm -f /etc/zfs/zpool.cache
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@@ -49,33 +15,40 @@ Install GRUB
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mkinitcpio -P
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#. If using legacy booting, install GRUB to every disk::
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#. Apply GRUB workaround::
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for i in ${DISK}; do
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grub-install --target=i386-pc $i
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done
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echo 'export ZPOOL_VDEV_NAME_PATH=YES' >> /etc/profile.d/zpool_vdev_name_path.sh
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source /etc/profile.d/zpool_vdev_name_path.sh
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#. If using EFI::
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grub-install --target x86_64-efi
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grub-install --target x86_64-efi --removable
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for i in ${DISK}; do
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efibootmgr -cgp 1 -l "\EFI\arch\grubx64.efi" \
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-L "arch-${i##*/}" -d ${i}
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done
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#. Generate GRUB Menu:
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Generate menu::
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# GRUB fails to detect rpool name, hard code as "rpool"
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sed -i "s|rpool=.*|rpool=rpool|" /etc/grub.d/10_linux
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echo GRUB_CMDLINE_LINUX=\"zfs_import_dir=/dev/disk/by-id/\" >> /etc/default/grub
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grub-mkconfig -o /boot/grub/grub.cfg
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cp /boot/grub/grub.cfg /boot/efi/EFI/arch/
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This workaround needs to be applied for every GRUB update, as the
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update will overwrite the changes.
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#. Install GRUB::
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export ZPOOL_VDEV_NAME_PATH=YES
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mkdir -p /boot/efi/arch/grub-bootdir/i386-pc/
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mkdir -p /boot/efi/arch/grub-bootdir/x86_64-efi/
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for i in ${DISK}; do
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grub-install --target=i386-pc --boot-directory \
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/boot/efi/arch/grub-bootdir/i386-pc/ $i
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done
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grub-install --target x86_64-efi --boot-directory \
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/boot/efi/arch/grub-bootdir/x86_64-efi/ --efi-directory \
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/boot/efi --bootloader-id arch --removable
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#. Generate GRUB menu::
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grub-mkconfig -o /boot/efi/arch/grub-bootdir/x86_64-efi/grub/grub.cfg
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grub-mkconfig -o /boot/efi/arch/grub-bootdir/i386-pc/grub/grub.cfg
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#. For both legacy and EFI booting: mirror ESP content::
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ESP_MIRROR=$(mktemp -d)
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unalias -a
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cp -r /boot/efi/EFI $ESP_MIRROR
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for i in /boot/efis/*; do
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cp -r $ESP_MIRROR/EFI $i
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@@ -118,7 +118,8 @@ System Installation
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Create boot dataset::
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zfs create -o canmount=on -o mountpoint=/boot bpool/redhat
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zfs create -o canmount=off -o mountpoint=none bpool/redhat
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zfs create -o canmount=on -o mountpoint=/boot bpool/redhat/root
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#. Format and mount ESP::
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@@ -61,7 +61,7 @@ System Configuration
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fixfiles -F onboot
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#. Set root password::
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#. Set root password, the password set earlier does not work due to SELinux::
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passwd
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@@ -6,40 +6,6 @@ Bootloader
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.. contents:: Table of Contents
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:local:
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Apply workarounds
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~~~~~~~~~~~~~~~~~~~~
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Currently GRUB has multiple compatibility problems with ZFS,
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especially with regards to newer ZFS features.
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Workarounds have to be applied.
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#. grub2-probe fails to get canonical path
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When persistent device names ``/dev/disk/by-id/*`` are used
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with ZFS, GRUB will fail to resolve the path of the boot pool
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device. Error::
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# /usr/bin/grub2-probe: error: failed to get canonical path of `/dev/virtio-pci-0000:06:00.0-part3'.
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Solution::
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echo 'export ZPOOL_VDEV_NAME_PATH=YES' >> /etc/profile.d/zpool_vdev_name_path.sh
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source /etc/profile.d/zpool_vdev_name_path.sh
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#. Pool name missing
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See `this bug report <https://savannah.gnu.org/bugs/?59614>`__.
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Root pool name is missing from ``root=ZFS=rpool_$INST_UUID/ROOT/default``
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kernel cmdline in generated ``grub.cfg`` file.
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A workaround is to replace the pool name detection with ``zdb``
|
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command::
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|
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sed -i "s|rpool=.*|rpool=\`zdb -l \${GRUB_DEVICE} \| grep -E '[[:blank:]]name' \| cut -d\\\' -f 2\`|" /etc/grub.d/10_linux
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Caution: this fix must be applied after every GRUB update and before generating the menu.
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Install GRUB
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~~~~~~~~~~~~~~~~~~~~
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#. If using virtio disk, add driver to initrd::
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@@ -61,26 +27,33 @@ Install GRUB
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echo 'GRUB_ENABLE_BLSCFG=false' >> /etc/default/grub
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#. If using legacy booting, install GRUB to every disk::
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#. Apply GRUB workaround::
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echo 'export ZPOOL_VDEV_NAME_PATH=YES' >> /etc/profile.d/zpool_vdev_name_path.sh
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source /etc/profile.d/zpool_vdev_name_path.sh
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# GRUB fails to detect rpool name, hard code as "rpool"
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sed -i "s|rpool=.*|rpool=rpool|" /etc/grub.d/10_linux
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|
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This workaround needs to be applied for every GRUB update, as the
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update will overwrite the changes.
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#. Install GRUB::
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export ZPOOL_VDEV_NAME_PATH=YES
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mkdir -p /boot/efi/fedora/grub-bootdir/i386-pc/
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mkdir -p /boot/efi/fedora/grub-bootdir/x86_64-efi/
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for i in ${DISK}; do
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grub2-install --target=i386-pc $i
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grub2-install --target=i386-pc --boot-directory \
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/boot/efi/fedora/grub-bootdir/i386-pc/ $i
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done
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#. If using EFI::
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for i in ${DISK}; do
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efibootmgr -cgp 1 -l "\EFI\fedora\shimx64.efi" \
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-L "fedora-${i##*/}" -d ${i}
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done
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cp -r /usr/lib/grub/x86_64-efi/ /boot/efi/EFI/fedora/
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#. Generate GRUB Menu:
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#. Generate GRUB menu::
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Generate menu::
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grub2-mkconfig -o /boot/grub2/grub.cfg
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cp /boot/grub2/grub.cfg /boot/efi/EFI/fedora/
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grub2-mkconfig -o /boot/efi/EFI/fedora/grub.cfg
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grub2-mkconfig -o /boot/efi/fedora/grub-bootdir/i386-pc/grub2/grub.cfg
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#. For both legacy and EFI booting: mirror ESP content::
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|
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|
||||
@@ -118,7 +118,8 @@ System Installation
|
||||
|
||||
Create boot dataset::
|
||||
|
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zfs create -o canmount=on -o mountpoint=/boot bpool/nixos
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zfs create -o canmount=off -o mountpoint=none bpool/nixos
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zfs create -o canmount=on -o mountpoint=/boot bpool/nixos/root
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#. Format and mount ESP::
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|
||||
|
||||
@@ -8,11 +8,11 @@ System Configuration
|
||||
|
||||
#. Disable cache, stale cache will prevent system from booting::
|
||||
|
||||
mkdir -p /mnt/state/etc/zfs/
|
||||
rm -f /mnt/state/etc/zfs/zpool.cache
|
||||
touch /mnt/state/etc/zfs/zpool.cache
|
||||
chmod a-w /mnt/state/etc/zfs/zpool.cache
|
||||
chattr +i /mnt/state/etc/zfs/zpool.cache
|
||||
mkdir -p /mnt/etc/zfs/
|
||||
rm -f /mnt/etc/zfs/zpool.cache
|
||||
touch /mnt/etc/zfs/zpool.cache
|
||||
chmod a-w /mnt/etc/zfs/zpool.cache
|
||||
chattr +i /mnt/etc/zfs/zpool.cache
|
||||
|
||||
#. Generate initial system configuration::
|
||||
|
||||
|
||||
@@ -118,7 +118,8 @@ System Installation
|
||||
|
||||
Create boot dataset::
|
||||
|
||||
zfs create -o canmount=on -o mountpoint=/boot bpool/redhat
|
||||
zfs create -o canmount=off -o mountpoint=none bpool/redhat
|
||||
zfs create -o canmount=on -o mountpoint=/boot bpool/redhat/root
|
||||
|
||||
#. Format and mount ESP::
|
||||
|
||||
|
||||
@@ -61,6 +61,6 @@ System Configuration
|
||||
|
||||
fixfiles -F onboot
|
||||
|
||||
#. Set root password::
|
||||
#. Set root password, the password set earlier does not work due to SELinux::
|
||||
|
||||
passwd
|
||||
|
||||
@@ -6,40 +6,6 @@ Bootloader
|
||||
.. contents:: Table of Contents
|
||||
:local:
|
||||
|
||||
Apply workarounds
|
||||
~~~~~~~~~~~~~~~~~~~~
|
||||
Currently GRUB has multiple compatibility problems with ZFS,
|
||||
especially with regards to newer ZFS features.
|
||||
Workarounds have to be applied.
|
||||
|
||||
#. grub2-probe fails to get canonical path
|
||||
|
||||
When persistent device names ``/dev/disk/by-id/*`` are used
|
||||
with ZFS, GRUB will fail to resolve the path of the boot pool
|
||||
device. Error::
|
||||
|
||||
# /usr/bin/grub2-probe: error: failed to get canonical path of `/dev/virtio-pci-0000:06:00.0-part3'.
|
||||
|
||||
Solution::
|
||||
|
||||
echo 'export ZPOOL_VDEV_NAME_PATH=YES' >> /etc/profile.d/zpool_vdev_name_path.sh
|
||||
source /etc/profile.d/zpool_vdev_name_path.sh
|
||||
|
||||
#. Pool name missing
|
||||
|
||||
See `this bug report <https://savannah.gnu.org/bugs/?59614>`__.
|
||||
Root pool name is missing from ``root=ZFS=rpool_$INST_UUID/ROOT/default``
|
||||
kernel cmdline in generated ``grub.cfg`` file.
|
||||
|
||||
A workaround is to replace the pool name detection with ``zdb``
|
||||
command::
|
||||
|
||||
sed -i "s|rpool=.*|rpool=\`zdb -l \${GRUB_DEVICE} \| grep -E '[[:blank:]]name' \| cut -d\\\' -f 2\`|" /etc/grub.d/10_linux
|
||||
|
||||
Caution: this fix must be applied after every GRUB update and before generating the menu.
|
||||
|
||||
Install GRUB
|
||||
~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
#. If using virtio disk, add driver to initrd::
|
||||
|
||||
@@ -61,26 +27,33 @@ Install GRUB
|
||||
|
||||
echo 'GRUB_ENABLE_BLSCFG=false' >> /etc/default/grub
|
||||
|
||||
#. If using legacy booting, install GRUB to every disk::
|
||||
#. Apply GRUB workaround::
|
||||
|
||||
echo 'export ZPOOL_VDEV_NAME_PATH=YES' >> /etc/profile.d/zpool_vdev_name_path.sh
|
||||
source /etc/profile.d/zpool_vdev_name_path.sh
|
||||
|
||||
# GRUB fails to detect rpool name, hard code as "rpool"
|
||||
sed -i "s|rpool=.*|rpool=rpool|" /etc/grub.d/10_linux
|
||||
|
||||
This workaround needs to be applied for every GRUB update, as the
|
||||
update will overwrite the changes.
|
||||
|
||||
#. Install GRUB::
|
||||
|
||||
export ZPOOL_VDEV_NAME_PATH=YES
|
||||
mkdir -p /boot/efi/almalinux/grub-bootdir/i386-pc/
|
||||
mkdir -p /boot/efi/almalinux/grub-bootdir/x86_64-efi/
|
||||
for i in ${DISK}; do
|
||||
grub2-install --target=i386-pc $i
|
||||
grub2-install --target=i386-pc --boot-directory \
|
||||
/boot/efi/almalinux/grub-bootdir/i386-pc/ $i
|
||||
done
|
||||
|
||||
#. If using EFI::
|
||||
|
||||
for i in ${DISK}; do
|
||||
efibootmgr -cgp 1 -l "\EFI\almalinux\shimx64.efi" \
|
||||
-L "almalinux-${i##*/}" -d ${i}
|
||||
done
|
||||
cp -r /usr/lib/grub/x86_64-efi/ /boot/efi/EFI/almalinux/
|
||||
|
||||
#. Generate GRUB Menu:
|
||||
#. Generate GRUB menu::
|
||||
|
||||
Generate menu::
|
||||
|
||||
grub2-mkconfig -o /boot/grub2/grub.cfg
|
||||
cp /boot/grub2/grub.cfg /boot/efi/EFI/almalinux/
|
||||
grub2-mkconfig -o /boot/efi/EFI/almalinux/grub.cfg
|
||||
grub2-mkconfig -o /boot/efi/almalinux/grub-bootdir/i386-pc/grub2/grub.cfg
|
||||
|
||||
#. For both legacy and EFI booting: mirror ESP content::
|
||||
|
||||
|
||||
Reference in New Issue
Block a user