Fixed hardcoded root partition device name sda2

The root partition may not be /dev/sda2, for example if set the boot disk as the second disk, the root partition device name will be /dev/sdb2. It may be /dev/vda2 if not using san disk. The fix figured out the root partition device UUID and set the UUID as the root, the root partition device UUID keeps no change. Signed-off-by: JUN JIE NAN <nanjunjie@gmail.com>
lxc · Apr 2, 2024 · a6af75a · a6af75a
1 parent a7a0d8d
commit a6af75a
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Showing 12 changed files with 41 additions and 26 deletions.
diff --git a/images/almalinux.yaml b/images/almalinux.yaml
@@ -408,8 +408,8 @@ actions:
 
     target="$(readlink -f /etc/grub2-efi.cfg)"
     grub2-mkconfig -o "${target}"
-
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i "${target}"
   types:
   - vm
   releases:
@@ -424,11 +424,13 @@ actions:
 
     # Create grub.cfg file
     grub2-mkconfig -o "${target}"
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i "${target}"
+
 
     # Update files in /boot/loader/entries/. `grubby` needs to be run after
     # `grub2-mkconfig` as the latter overwrites files in /boot/loader/entries/.
-    grubby --update-kernel=/boot/vmlinuz-${kver} --args="root=/dev/sda2 ro"
+    grubby --update-kernel=/boot/vmlinuz-${kver} --args="root=${rootdevuuid} ro"
 
     # Regenerate initramfs
     dracut --kver "${kver}" -f

diff --git a/images/alpine.yaml b/images/alpine.yaml
@@ -386,7 +386,8 @@ actions:
 
     target=/boot/grub/grub.cfg
     grub-mkconfig -o "${target}"
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i "${target}"
 
     TARGET="x86_64"
     [ "$(uname -m)" = "aarch64" ] && TARGET="arm64"

diff --git a/images/archlinux.yaml b/images/archlinux.yaml
@@ -796,8 +796,8 @@ actions:
     grub-install --target="${TARGET}-efi" --efi-directory=/boot/efi --no-nvram --removable
     grub-install --target="${TARGET}-efi" --efi-directory=/boot/efi --no-nvram
     grub-mkconfig -o /boot/grub/grub.cfg
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" /boot/grub/grub.cfg
-
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i /boot/grub/grub.cfg
     # Rebuild initrd
     sed -i 's#^MODULES=.*#MODULES=(virtio_pci virtio_scsi virtio_console)#' /etc/mkinitcpio.conf
 

diff --git a/images/centos.yaml b/images/centos.yaml
@@ -831,7 +831,8 @@ actions:
 
     umount /sys/firmware
 
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i "${target}"
 
     # Workaround for broken systemd in centos7
     systemctl enable incus-agent-workaround.service
@@ -851,8 +852,8 @@ actions:
 
     target="$(readlink -f /etc/grub2-efi.cfg)"
     grub2-mkconfig -o "${target}"
-
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i "${target}"
   types:
   - vm
   releases:
@@ -867,11 +868,12 @@ actions:
 
     # Create grub.cfg file
     grub2-mkconfig -o "${target}"
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i "${target}"
 
     # Update files in /boot/loader/entries/. `grubby` needs to be run after
     # `grub2-mkconfig` as the latter overwrites files in /boot/loader/entries/.
-    grubby --update-kernel=/boot/vmlinuz-${kver} --args="root=/dev/sda2 ro"
+    grubby --update-kernel=/boot/vmlinuz-${kver} --args="root=${rootdevuuid} ro"
 
     # Regenerate initramfs
     dracut --kver "${kver}" -f

diff --git a/images/debian.yaml b/images/debian.yaml
@@ -1478,7 +1478,8 @@ actions:
     grub-install --uefi-secure-boot --target="${TARGET}-efi" --no-nvram
 
     update-grub
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" /boot/grub/grub.cfg
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i /boot/grub/grub.cfg
   types:
   - vm
   releases:

diff --git a/images/fedora.yaml b/images/fedora.yaml
@@ -353,7 +353,8 @@ actions:
 
     target=/boot/efi/EFI/fedora/grub.cfg
     grub2-mkconfig -o "${target}"
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i "${target}"
 
     sed -Eri "s#^(linux|initrd) .+/overlay/#\1 /#g" /boot/loader/entries/*
     sed -ri 's#^options .+#options $kernelopts#g' /boot/loader/entries/*

diff --git a/images/gentoo.yaml b/images/gentoo.yaml
@@ -577,8 +577,8 @@ actions:
     rm -Rf /boot/* /boot/efi/* || true
     systemd-machine-id-setup
     bootctl install --no-variables --esp-path=/boot/efi/
-
-    echo "root=/dev/sda2" >> /etc/kernel/cmdline
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    echo "root=${rootdevuuid}" >> /etc/kernel/cmdline
 
     echo "sys-apps/systemd kernel-install" >> /etc/portage/package.use/systemd
     echo "sys-kernel/installkernel dracut systemd systemd-boot" >> /etc/portage/package.use/installkernel
@@ -668,7 +668,8 @@ actions:
     grub-install --target=${TARGET}-efi --no-nvram --removable
     grub-install --target=${TARGET}-efi --no-nvram
     grub-mkconfig -o /boot/grub/grub.cfg
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" /boot/grub/grub.cfg
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i /boot/grub/grub.cfg
   types:
   - vm
   variants:

diff --git a/images/openeuler.yaml b/images/openeuler.yaml
@@ -356,8 +356,8 @@ actions:
     grub2-mkconfig -o "${target}"
 
     umount /sys/firmware
-
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i "${target}"
 
     # Workaround for broken systemd in centos7
     systemctl enable incus-agent-workaround.service

diff --git a/images/opensuse.yaml b/images/opensuse.yaml
@@ -409,7 +409,8 @@ actions:
 
     grub2-mkconfig -o /boot/grub2/grub.cfg
     umount /sys/firmware
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" /boot/grub2/grub.cfg
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i /boot/grub2/grub.cfg
   types:
   - vm
 

diff --git a/images/rockylinux.yaml b/images/rockylinux.yaml
@@ -360,7 +360,8 @@ actions:
     dracut --kver "${kver}" -f
     target="$(readlink -f /etc/grub2-efi.cfg)"
     grub2-mkconfig -o "${target}"
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i "${target}"
   types:
   - vm
   releases:
@@ -374,10 +375,12 @@ actions:
     target=/boot/efi/EFI/rocky/grub.cfg
     # Create grub.cfg file
     grub2-mkconfig -o "${target}"
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i "${target}"
+
     # Update files in /boot/loader/entries/. `grubby` needs to be run after
     # `grub2-mkconfig` as the latter overwrites files in /boot/loader/entries/.
-    grubby --update-kernel=/boot/vmlinuz-${kver} --args="root=/dev/sda2 ro"
+    grubby --update-kernel=/boot/vmlinuz-${kver} --args="root=${rootdevuuid} ro"
     # Regenerate initramfs
     dracut --kver "${kver}" -f
   types:

diff --git a/images/springdalelinux.yaml b/images/springdalelinux.yaml
@@ -431,7 +431,8 @@ actions:
 
     umount /sys/firmware
 
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i "${target}"
 
     # Workaround for broken systemd in centos7
     systemctl enable incus-agent-workaround.service
@@ -452,7 +453,8 @@ actions:
     target="$(readlink -f /etc/grub2-efi.cfg)"
     grub2-mkconfig -o "${target}"
 
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" "${target}"
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i "${target}"
   types:
   - vm
   releases:

diff --git a/images/ubuntu.yaml b/images/ubuntu.yaml
@@ -713,7 +713,8 @@ actions:
     grub-install --uefi-secure-boot --target="${TARGET}-efi" --no-nvram
 
     update-grub
-    sed -i "s#root=[^ ]*#root=/dev/sda2#g" /boot/grub/grub.cfg
+    rootdevuuid=$(blkid -o export $(echo -n /dev/loop[0-9]*p2) | grep ^UUID)
+    sed -e "s#root=[^ ]*#root=${rootdevuuid}#g" -i /boot/grub/grub.cfg
   types:
   - vm