Multiple fixes for Root on ZFS guide (#191)
* Let user know that SELinux will be re-enabled after reboot Signed-off-by: Maurice Zhou <jasper@apvc.uk> * compat with future releases: use zfs-dkms and newer repo Signed-off-by: Maurice Zhou <jasper@apvc.uk> * rm unused releasever option Signed-off-by: Maurice Zhou <jasper@apvc.uk> * let user aware of the ignorable errors Signed-off-by: Maurice Zhou <jasper@apvc.uk> * detailed explanations for errors during grub-menu generation Signed-off-by: Maurice Zhou <jasper@apvc.uk> * Build ZFS dkms module in installed system Signed-off-by: Maurice Zhou <jasper@apvc.uk> * switch to dkms package for better compatibility with kernels Signed-off-by: Maurice Zhou <jasper@apvc.uk> * add direct download links for live iso Signed-off-by: Maurice Zhou <jasper@apvc.uk> * rm zfs-fuse before install; mirrorlist Signed-off-by: Maurice Zhou <jasper@apvc.uk> * reformat notes Signed-off-by: Maurice Zhou <jasper@apvc.uk> * rm netconfig - networkmanager is enabled by default Signed-off-by: Maurice Zhou <jasper@apvc.uk> * load kernel module in live; Signed-off-by: Maurice Zhou <jasper@apvc.uk> * rm encrypted bpool: untested Signed-off-by: Maurice Zhou <jasper@apvc.uk> * use u=r,go= permission on key file Signed-off-by: Maurice Zhou <jasper@apvc.uk> * fix typo Signed-off-by: Maurice Zhou <jasper@apvc.uk> * use bash shell Signed-off-by: Maurice Zhou <jasper@apvc.uk> * suggest clean the disks Signed-off-by: Maurice Zhou <jasper@apvc.uk> * add grub-menu auto update Signed-off-by: Maurice Zhou <jasper@apvc.uk> * monitor kernel-core pkg Signed-off-by: Maurice Zhou <jasper@apvc.uk> * copyright 2021 Signed-off-by: Maurice Zhou <jasper@apvc.uk> * fix kernel var detection Signed-off-by: Maurice Zhou <jasper@apvc.uk> * read-only cache file Signed-off-by: Maurice Zhou <jasper@apvc.uk> * replace zfs-mount.service with zfs-mount-generator Signed-off-by: Maurice Zhou <jasper@apvc.uk> * notes for mount and POSIX-compliant Signed-off-by: Maurice Zhou <jasper@apvc.uk> * hard-code kernel version Signed-off-by: Maurice Zhou <jasper@apvc.uk> * fix chroot variable Signed-off-by: Maurice Zhou <jasper@apvc.uk> * fix grub cfg Signed-off-by: Maurice Zhou <jasper@apvc.uk> * fix grub Signed-off-by: Maurice Zhou <jasper@apvc.uk> * missing comment Signed-off-by: Maurice Zhou <jasper@apvc.uk> * comments Signed-off-by: Maurice Zhou <jasper@apvc.uk>
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ne9z
@@ -72,13 +72,13 @@ Install GRUB
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#. If using legacy booting, install GRUB to every disk::
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for i in ${DISK[@]}; do
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for i in ${DISK}; do
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grub2-install --boot-directory /boot/efi/EFI/rocky --target=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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for i in ${DISK}; do
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efibootmgr -cgp 1 -l "\EFI\rocky\shimx64.efi" \
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-L "rocky-${i##*/}" -d ${i}
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done
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@@ -101,6 +101,17 @@ Install GRUB
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cp /boot/efi/EFI/rocky/grub.cfg /boot/efi/EFI/rocky/grub2/grub.cfg
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cp /boot/efi/EFI/rocky/grub.cfg /boot/grub2/grub.cfg
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The following errors may be safely ignored:
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- ``device-mapper: reload ioctl on osprober-linux-sda2 (253:0) failed: Device or resource busy``
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This is caused by os-prober probing OS on the partitions used by ZFS,
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harmless but os-prober can be disabled by::
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echo GRUB_DISABLE_OS_PROBER=true >> /etc/default/grub
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- ``/usr/sbin/grub2-probe: error: ../grub-core/kern/fs.c:120:unknown filesystem.``
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This is fixed by /etc/grub.d/09_fix_root_on_zfs
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#. For both legacy and EFI booting: mirror ESP content::
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ESP_MIRROR=$(mktemp -d)
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@@ -110,6 +121,33 @@ Install GRUB
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cp -r $ESP_MIRROR/EFI $i
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done
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#. Automatically regenerate GRUB menu on kernel update::
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tee /etc/dnf/plugins/post-transaction-actions.d/00-update-grub-menu-for-kernel.action <<EOF >/dev/null
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# kernel-core package contains vmlinuz and initramfs
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# change package name if non-standard kernel is used
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kernel-core:in:/usr/local/sbin/update-grub-menu.sh
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kernel-core:out:/usr/local/sbin/update-grub-menu.sh
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EOF
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tee /usr/local/sbin/update-grub-menu.sh <<-'EOF' >/dev/null
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#!/bin/sh
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export PATH=$PATH:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
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export ZPOOL_VDEV_NAME_PATH=YES
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source /etc/os-release
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grub2-mkconfig -o /boot/efi/EFI/${ID}/grub.cfg
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cp /boot/efi/EFI/${ID}/grub.cfg /boot/efi/EFI/${ID}/grub2/grub.cfg
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cp /boot/efi/EFI/${ID}/grub.cfg /boot/grub2/grub.cfg
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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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EOF
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chmod +x /usr/local/sbin/update-grub-menu.sh
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#. Notes for GRUB on RHEL
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To support Secure Boot, GRUB has been heavily modified by Fedora,
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@@ -157,6 +195,24 @@ Finish Installation
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reboot
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Post installaion
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~~~~~~~~~~~~~~~~
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#. If you have other data pools, generate list of datasets for `zfs-mount-generator
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<https://manpages.ubuntu.com/manpages/focal/man8/zfs-mount-generator.8.html>`__ to mount them at boot::
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DATA_POOL='tank0 tank1'
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# tab-separated zfs properties
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# see /etc/zfs/zed.d/history_event-zfs-list-cacher.sh
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export \
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PROPS="name,mountpoint,canmount,atime,relatime,devices,exec\
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,readonly,setuid,nbmand,encroot,keylocation"
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for i in $DATA_POOL; do
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zfs list -H -t filesystem -o $PROPS -r $i > /etc/zfs/zfs-list.cache/$i
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done
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#. After reboot, consider adding a normal user::
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myUser=UserName
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