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This is an old revision of the document!

Move root to ZFS

Based on Debian Buster Root on ZFS

Prepare new disk

DISK=/dev/disk/by-id/scsi-SATA_disk1
sgdisk --zap-all $DISK
sgdisk -a8 -n1:24K:+1000K -t1:EF02 $DISK  # grub bios
sgdisk     -n2:1M:+256M   -t2:EF00 $DISK  # EFI
sgdisk     -n3:0:+512M    -t3:BF01 $DISK  # /boot
sgdisk     -n4:0:0        -t4:BF00 $DISK  # rpool

Create boot pool

zpool create \
    -o ashift=12 -d \
    -o feature@async_destroy=enabled \
    -o feature@bookmarks=enabled \
    -o feature@embedded_data=enabled \
    -o feature@empty_bpobj=enabled \
    -o feature@enabled_txg=enabled \
    -o feature@extensible_dataset=enabled \
    -o feature@filesystem_limits=enabled \
    -o feature@hole_birth=enabled \
    -o feature@large_blocks=enabled \
    -o feature@lz4_compress=enabled \
    -o feature@spacemap_histogram=enabled \
    -o feature@zpool_checkpoint=enabled \
    -O acltype=posixacl -O canmount=off -O compression=lz4 \
    -O devices=off -O normalization=formD -O relatime=on -O xattr=sa \
    -O mountpoint=/boot -R /bpool \
    bpool ${DISK}-part3

create root pool

zpool create \
    -o ashift=12 \
    -O acltype=posixacl -O canmount=off -O compression=lz4 \
    -O dnodesize=auto -O normalization=formD -O relatime=on \
    -O xattr=sa -O mountpoint=/ -R /rpool \
    rpool ${DISK}-part4

prepare filesystem

zfs create -o canmount=off -o mountpoint=none rpool/ROOT
zfs create -o canmount=off -o mountpoint=none bpool/BOOT
zfs create -o canmount=noauto -o mountpoint=/ rpool/ROOT/debian
mkdir -p /rpool
zfs set mountpoint=/rpool rpool
zfs mount rpool/ROOT/debian
 
zfs create -o mountpoint=/boot bpool/BOOT/debian
mkdir -p /bpool
zfs set mountpoint=/bpool bpool
zfs create rpool/home
zfs create rpool/root
chmod 700 /rpool/root
 
zfs create -o canmount=off -o setuid=off -o exec=off rpool/var
zfs create -o acltype=posixacl -o xattr=sa rpool/var/log
zfs create -o com.sun:auto-snapshot=false  rpool/var/cache
zfs create                                 rpool/var/spool
zfs create -o com.sun:auto-snapshot=false -o exec=on rpool/var/tmp
chmod 1777 /rpool/var/tmp
 
zfs create -o canmount=off                 rpool/var/lib
zfs create -o com.sun:auto-snapshot=false  rpool/var/lib/docker
 
zfs create                                 rpool/opt
 
zfs create -o canmount=off                 rpool/usr
zfs create                                 rpool/usr/local
 
zfs create                                 rpool/var/snap
 
zfs inherit exec rpool/var

DONT FORGET TO ADD NEXT MIRROR DEVICE DRIVE TO ZFS POOLS:

  • bpool
  • rpool

/dev/sda1 1MB BIOS boot /dev/sda2 512MB EFI System vfat /dev/sda3 rest zfs_member

rpool 136G 314G 104K /rpool rpool/ROOT 5,79G 314G 96K /rpool/ROOT rpool/ROOT/pve-1 5,79G 314G 5,79G /