From: Plom Heller <plom@plomlompom.com>
Date: Wed, 26 Aug 2026 07:30:47 +0000 (+0200)
Subject: Add minimal fstab so we boot into a readwrite root rather than a readonly.
X-Git-Url: https://plomlompom.com/repos/%22https:/validator.w3.org/static/todo?a=commitdiff_plain;h=173e1ea462c22f435d991bfa4bf69c40825aa1b3;p=confplom

Add minimal fstab so we boot into a readwrite root rather than a readonly.
---

diff --git a/install_debian.sh b/install_debian.sh
index ed100b4..35a86cf 100755
--- a/install_debian.sh
+++ b/install_debian.sh
@@ -4,8 +4,8 @@ SCRIPT_NAME=$0
 
 # constants unlikely to change
 PATH_DEV=/dev
-NAME_ROOT=root
 PATH_EFI=/boot/efi
+PATH_FSTAB=/etc/fstab
 NAME_INITRD=initrd.img
 NAME_VMLINUZ=vmlinuz
 
@@ -14,6 +14,7 @@ DEB_SUITE=trixie
 PATH_BOOT_DEVICE="${PATH_DEV}/nvme0n1"
 IDX_BOOT_PARTITION=1
 PATH_MNT=/mnt/debinst
+NAME_ROOT=root
 
 # helpers
 msg_nonl() {
@@ -56,6 +57,7 @@ BOOT_LABEL=$3
 LOGVOL_ROOT="${PATH_DEV}/${NAME_VOLGROUP}/${NAME_ROOT}"
 PATH_EFI_BOOT_LABEL="${PATH_EFI}/${BOOT_LABEL}"
 DEV_SLAVE="${PATH_MNT}${PATH_DEV}"
+PATH_MNT_FSTAB="${PATH_MNT}${PATH_FSTAB}"
 
 # sanity checks: required tools
 for CMD in debootstrap efibootmgr lvcreate pvcreate vgcreate vgs; do
@@ -112,6 +114,11 @@ msg 'For chroot environment also mounting %s into there …' "${PATH_DEV}"
 mount --rbind "${PATH_DEV}" "${DEV_SLAVE}"
 mount --make-rslave "${DEV_SLAVE}"
 
+# set up minimal fstab
+msg 'Writing fstab …'
+printf '%s / ext4 errors=remount-ro 0 1\n' "${LOGVOL_ROOT}"\
+        >| "${PATH_MNT_FSTAB}"
+
 # set up kernel, initrd
 msg 'Into chroot environment installing LVM tools, kernel, initrd …'
 chroot_sh "apt -qq update"