Updates and cleanup for Arch, RHEL, NixOS and Fedora
Signed-off-by: Maurice Zhou <ja@apvc.uk>
This commit is contained in:
Maurice Zhou
committed by
George Melikov
George Melikov
parent
5777295f0a
commit
2766cb7197
@@ -6,48 +6,29 @@ System Installation
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.. contents:: Table of Contents
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:local:
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#. Optional: wipe solid-state drives with the generic tool
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`blkdiscard <https://utcc.utoronto.ca/~cks/space/blog/linux/ErasingSSDsWithBlkdiscard>`__,
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to clean previous partition tables and improve performance.
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All content will be irrevocably destroyed::
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for i in ${DISK}; do
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blkdiscard -f $i &
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done
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wait
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This is a quick operation and should be completed under one
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minute.
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For other device specific methods, see
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`Memory cell clearing <https://wiki.archlinux.org/title/Solid_state_drive/Memory_cell_clearing>`__
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#. Partition the disks.
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See `Overview <0-overview.html>`__ for details::
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#. Partition the disks::
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for i in ${DISK}; do
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sgdisk --zap-all $i
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sgdisk -n1:1M:+${INST_PARTSIZE_ESP}G -t1:EF00 $i
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sgdisk -n2:0:+${INST_PARTSIZE_BPOOL}G -t2:BE00 $i
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if [ "${INST_PARTSIZE_SWAP}" != "" ]; then
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sgdisk -n4:0:+${INST_PARTSIZE_SWAP}G -t4:8200 $i
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fi
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if [ "${INST_PARTSIZE_RPOOL}" = "" ]; then
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sgdisk -n1:1M:+1G -t1:EF00 $i
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sgdisk -n2:0:+4G -t2:BE00 $i
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test -z $INST_PARTSIZE_SWAP || sgdisk -n4:0:+${INST_PARTSIZE_SWAP}G -t4:8200 $i
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if test -z $INST_PARTSIZE_RPOOL; then
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sgdisk -n3:0:0 -t3:BF00 $i
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else
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sgdisk -n3:0:+${INST_PARTSIZE_RPOOL}G -t3:BF00 $i
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fi
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sgdisk -a1 -n5:24K:+1000K -t5:EF02 $i
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done
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#. Create boot pool::
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disk_num=0; for i in $DISK; do disk_num=$(( $disk_num + 1 )); done
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if [ $disk_num -gt 1 ]; then INST_VDEV_BPOOL=mirror; fi
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zpool create \
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-o compatibility=grub2 \
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-o ashift=12 \
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@@ -61,12 +42,14 @@ System Installation
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-O xattr=sa \
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-O mountpoint=/boot \
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-R /mnt \
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bpool_$INST_UUID \
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$INST_VDEV_BPOOL \
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bpool \
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mirror \
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$(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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You should not need to customize any of the options for the boot pool.
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GRUB does not support all of the zpool features. See ``spa_feature_names``
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@@ -93,67 +76,15 @@ System Installation
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-O relatime=on \
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-O xattr=sa \
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-O mountpoint=/ \
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rpool_$INST_UUID \
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$INST_VDEV \
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rpool \
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mirror \
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$(for i in ${DISK}; do
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printf "$i-part3 ";
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done)
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**Notes:**
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If not using a multi-disk setup, remove ``mirror``.
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- The use of ``ashift=12`` is recommended here because many drives
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today have 4 KiB (or larger) physical sectors, even though they
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present 512 B logical sectors. Also, a future replacement drive may
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have 4 KiB physical sectors (in which case ``ashift=12`` is desirable)
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or 4 KiB logical sectors (in which case ``ashift=12`` is required).
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- Setting ``-O acltype=posixacl`` enables POSIX ACLs globally. If you
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do not want this, remove that option, but later add
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``-o acltype=posixacl`` (note: lowercase “o”) to the ``zfs create``
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for ``/var/log``, as `journald requires ACLs
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<https://askubuntu.com/questions/970886/journalctl-says-failed-to-search-journal-acl-operation-not-supported>`__
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- Setting ``normalization=formD`` eliminates some corner cases relating
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to UTF-8 filename normalization. It also implies ``utf8only=on``,
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which means that only UTF-8 filenames are allowed. If you care to
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support non-UTF-8 filenames, do not use this option. For a discussion
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of why requiring UTF-8 filenames may be a bad idea, see `The problems
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with enforced UTF-8 only filenames
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<http://utcc.utoronto.ca/~cks/space/blog/linux/ForcedUTF8Filenames>`__.
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- ``recordsize`` is unset (leaving it at the default of 128 KiB). If you
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want to tune it (e.g. ``-o recordsize=1M``), see `these
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<https://jrs-s.net/2019/04/03/on-zfs-recordsize/>`__ `various
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<http://blog.programster.org/zfs-record-size>`__ `blog
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<https://utcc.utoronto.ca/~cks/space/blog/solaris/ZFSFileRecordsizeGrowth>`__
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`posts
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<https://utcc.utoronto.ca/~cks/space/blog/solaris/ZFSRecordsizeAndCompression>`__.
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- Setting ``relatime=on`` is a middle ground between classic POSIX
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``atime`` behavior (with its significant performance impact) and
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``atime=off`` (which provides the best performance by completely
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disabling atime updates). Since Linux 2.6.30, ``relatime`` has been
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the default for other filesystems. See `RedHat’s documentation
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<https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/power_management_guide/relatime>`__
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for further information.
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- Setting ``xattr=sa`` `vastly improves the performance of extended
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attributes
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<https://github.com/zfsonlinux/zfs/commit/82a37189aac955c81a59a5ecc3400475adb56355>`__.
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Inside ZFS, extended attributes are used to implement POSIX ACLs.
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Extended attributes can also be used by user-space applications.
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`They are used by some desktop GUI applications.
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<https://en.wikipedia.org/wiki/Extended_file_attributes#Linux>`__
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`They can be used by Samba to store Windows ACLs and DOS attributes;
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they are required for a Samba Active Directory domain controller.
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<https://wiki.samba.org/index.php/Setting_up_a_Share_Using_Windows_ACLs>`__
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Note that ``xattr=sa`` is `Linux-specific
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<https://openzfs.org/wiki/Platform_code_differences>`__. If you move your
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``xattr=sa`` pool to another OpenZFS implementation besides ZFS-on-Linux,
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extended attributes will not be readable (though your data will be). If
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portability of extended attributes is important to you, omit the
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``-O xattr=sa`` above. Even if you do not want ``xattr=sa`` for the whole
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pool, it is probably fine to use it for ``/var/log``.
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- Make sure to include the ``-part3`` portion of the drive path. If you
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forget that, you are specifying the whole disk, which ZFS will then
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re-partition, and you will lose the bootloader partition(s).
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#. This section implements dataset layout as described in `overview <0-overview.html>`__.
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#. This section implements dataset layout as described in `overview <1-preparation.html>`__.
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Create root system container:
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@@ -162,7 +93,7 @@ System Installation
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zfs create \
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-o canmount=off \
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-o mountpoint=none \
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rpool_$INST_UUID/$INST_ID
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rpool/redhat
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- Encrypted:
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@@ -175,28 +106,19 @@ System Installation
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-o encryption=on \
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-o keylocation=prompt \
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-o keyformat=passphrase \
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rpool_$INST_UUID/$INST_ID
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rpool/redhat
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Create other system datasets::
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Create system datasets::
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zfs create -o canmount=off -o mountpoint=none bpool_$INST_UUID/$INST_ID
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zfs create -o canmount=off -o mountpoint=none bpool_$INST_UUID/$INST_ID/BOOT
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zfs create -o canmount=off -o mountpoint=none rpool_$INST_UUID/$INST_ID/ROOT
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zfs create -o canmount=off -o mountpoint=none rpool_$INST_UUID/$INST_ID/DATA
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zfs create -o mountpoint=/boot -o canmount=noauto bpool_$INST_UUID/$INST_ID/BOOT/default
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zfs create -o mountpoint=/ -o canmount=off rpool_$INST_UUID/$INST_ID/DATA/default
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zfs create -o mountpoint=/ -o canmount=noauto rpool_$INST_UUID/$INST_ID/ROOT/default
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zfs mount rpool_$INST_UUID/$INST_ID/ROOT/default
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zfs mount bpool_$INST_UUID/$INST_ID/BOOT/default
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for i in {usr,var,var/lib};
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do
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zfs create -o canmount=off rpool_$INST_UUID/$INST_ID/DATA/default/$i
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done
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for i in {home,root,srv,usr/local,var/log,var/spool};
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do
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zfs create -o canmount=on rpool_$INST_UUID/$INST_ID/DATA/default/$i
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done
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chmod 750 /mnt/root
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zfs create -o canmount=on -o mountpoint=/ rpool/redhat/root
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zfs create -o canmount=on -o mountpoint=/home rpool/redhat/home
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zfs create -o canmount=off -o mountpoint=/var rpool/redhat/var
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zfs create -o canmount=on rpool/redhat/var/lib
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zfs create -o canmount=on rpool/redhat/var/log
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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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#. Format and mount ESP::
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@@ -207,50 +129,15 @@ System Installation
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done
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mkdir -p /mnt/boot/efi
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mount -t vfat ${INST_PRIMARY_DISK}-part1 /mnt/boot/efi
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mount -t vfat $(echo $DISK | cut -f1 -d\ )-part1 /mnt/boot/efi
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#. Create separate user dataset at ``/home/User``, dateset name can be
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changed later::
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#. Install packages::
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zfs create -o canmount=on rpool_$INST_UUID/$INST_ID/DATA/default/home/User
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dnf --installroot=/mnt --releasever=$(source /etc/os-release ; echo $VERSION_ID) -y install \
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@core grub2-efi-x64 grub2-pc-modules grub2-efi-x64-modules shim-x64 efibootmgr kernel \
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kernel-devel
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If needed, snapshot, rollback and other related permissions can be
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delegated to the user later.
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dnf --installroot=/mnt --releasever=$(source /etc/os-release ; echo $VERSION_ID) -y install \
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https://zfsonlinux.org/fedora/zfs-release-fedora-2-1.noarch.rpm
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#. Create optional program data datasets to omit data from rollback::
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zfs create -o canmount=on rpool_$INST_UUID/$INST_ID/DATA/default/var/games
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zfs create -o canmount=on rpool_$INST_UUID/$INST_ID/DATA/default/var/www
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# for GNOME
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zfs create -o canmount=on rpool_$INST_UUID/$INST_ID/DATA/default/var/lib/AccountsService
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# for Docker
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zfs create -o canmount=on rpool_$INST_UUID/$INST_ID/DATA/default/var/lib/docker
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# for NFS
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zfs create -o canmount=on rpool_$INST_UUID/$INST_ID/DATA/default/var/lib/nfs
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# for LXC
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zfs create -o canmount=on rpool_$INST_UUID/$INST_ID/DATA/default/var/lib/lxc
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# for LibVirt
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zfs create -o canmount=on rpool_$INST_UUID/$INST_ID/DATA/default/var/lib/libvirt
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##other application
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# zfs create -o canmount=on rpool_$INST_UUID/$INST_ID/DATA/default/var/lib/$name
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Add other datasets when needed, such as PostgreSQL.
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#. Install base packages::
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dnf --installroot=/mnt --releasever=${INST_FEDORA_VER} -y install \
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https://zfsonlinux.org/fedora/zfs-release.fc${INST_FEDORA_VER}.noarch.rpm \
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@core grub2-efi-x64 grub2-pc-modules grub2-efi-x64-modules shim-x64 efibootmgr cryptsetup \
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kernel kernel-devel python3-dnf-plugin-post-transaction-actions
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#. Install ZFS::
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dnf --installroot=/mnt -y install zfs zfs-dracut
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#. Optional: enable boot environment support and dnf integration::
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dnf --installroot=/mnt copr enable -y m0p/bieaz
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dnf --installroot=/mnt install -y bieaz python3-dnf-plugin-rozb3
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If multi-disk setup is used, enable multi-disk
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support inside ``/mnt/etc/bieaz.cfg``.
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dnf --installroot=/mnt --releasever=$(source /etc/os-release ; echo $VERSION_ID) -y install zfs zfs-dracut
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