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Move PARRTUUID to a %post action in the ks

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- also chown the result ro the  $SUDO_USER if ran with sudo
This commit is contained in:
Mark Verlinde 2021-07-15 19:32:41 +02:00
parent 7d83ec6dbc
commit 4760f97fd9
2 changed files with 20 additions and 39 deletions
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21
Rocky8_Rpi4.ks
View File

@ -61,7 +61,7 @@ aarch64-img-extra-config
%post
cat > /boot/cmdline.txt << EOF
console=ttyAMA0,115200 console=tty1 root= rootfstype=ext4 elevator=deadline rootwait
console=ttyAMA0,115200 console=tty1 root= rootfstype=ext4 elevator=deadline rootwait
EOF
# Run this once to fix the wifi:
@ -73,7 +73,6 @@ sed -i 's/boardflags3=0x48200100/boardflags3=0x44200100/g' /lib/firmware/brcm/
echo "rockylinux" | passwd --stdin rocky
# Need to write several files to help with various things here.
# First, the all-important README :
cat >/home/rocky/README << EOF
@ -141,3 +140,21 @@ rm -f /etc/ssh/*_key*
yum clean all
%end
# Add the PARTUUID of the rootfs partition to the kernel command line
%post --nochroot
# Extract the UUID of the rootfs partition from /etc/fstab
UUID_ROOTFS="$(/bin/cat $INSTALL_ROOT/etc/fstab | \
/bin/awk -F'[ =]' '/\/ / {print $2}')"
# Get the PARTUUID of the rootfs partition
PART_UUID_ROOTFS="$(/sbin/blkid "$(/sbin/blkid --uuid $UUID_ROOTFS)" | \
/bin/awk '{print toupper($NF)}' | /bin/tr -d '"' )"
# Configure the kernel commandline
/bin/sed -i "s/root= /root=${PART_UUID_ROOTFS} /" $INSTALL_ROOT/boot/cmdline.txt
echo "cmdline.txt looks like this, please review:"
/bin/cat $INSTALL_ROOT/boot/cmdline.txt
%end

38
Rocky8_Rpi4_mkimage.sh
View File

@ -25,40 +25,4 @@ mkdir -p "${OUTDIR}"
# (This takes a while, especially building on an rpi. Patience!)
appliance-creator -v -c ./Rocky8_Rpi4.ks -n RockyRpi --version=20210626 --release=1 --vmem=2048 --vcpu=2 --no-compress -o "${OUTDIR}"
# Post appliance-creator sequence to add UUID to the cmdline.txt file under /boot :
# (We don't want to rely on a /dev/ device name, what if a user wants to use a non-sdcard boot mechanism?)
mkdir -p /mnt/tmp
# find the image we just made, and make it available on /dev/maper/loop* devices:
image=$(find "${OUTDIR}" -iname '*.raw' | head -1)
echo "Getting UUID and inserting to boot from ${image} ...."
kpartx -av "${image}"
# Get the loop partition; it might be loop0p3, loop1p3, ...
looppart=$(kpartx -l "${image}" | awk '/p3/{print $1}')
# Get the UUID of our root partition (the ext4 one) (UUID=e3984938429 , strip out quotes("), and force upper case)
partuuid=$(blkid | grep "mapper/${looppart}" | head -1 | awk '{print $NF}' | tr -d '"' | tr '[:lower:]' '[:upper:]')
# Get the boot partition and mount it
# (change 3rd partition for 1st, so loop0p3 becomes loop0p1):
bootloop=$(echo "${looppart}" | sed 's/p3$/p1/')
umount /mnt/tmp
mount /dev/mapper/${bootloop} /mnt/tmp
# Swap out the "root=" part of cmdline.txt for our "root=UUID=blah"
sed -i "s/root= /root=${partuuid} /" /mnt/tmp/cmdline.txt
# Debug check to make sure it looks right:
echo "cmdline.txt looks like this, please review:"
cat /mnt/tmp/cmdline.txt
# Finished, unmount and clean loopbacks:
umount /mnt/tmp
kpartx -d "${image}"
chown -R $SUDO_USER. "${OUTDIR}"