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fix: gpu-passthrough-setup handle GRUB when proxmox-boot-tool absent

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Fall through to /etc/default/grub + update-grub when /etc/kernel/cmdline
doesn't exist, instead of erroring out. Covers systems that booted via
legacy GRUB rather than the Proxmox EFI boot tool.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Claude
2026-06-27 03:49:24 +00:00
parent 7067b53e09
commit a2df96ccef
1 changed files with 26 additions and 20 deletions
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scripts/gpu-passthrough-setup.sh
+26 -20
View File
@@ -50,28 +50,34 @@ read -rp "Proceed with configuring VFIO passthrough? [y/N] " confirm
echo ""
echo "--- Configuring kernel cmdline for IOMMU ---"
if [[ ! -f "$CMDLINE_FILE" ]]; then
echo "ERROR: $CMDLINE_FILE not found. Is this a Proxmox EFI system?"
echo "For legacy GRUB: edit /etc/default/grub GRUB_CMDLINE_LINUX_DEFAULT instead."
exit 1
if [[ -f "$CMDLINE_FILE" ]]; then
# Proxmox EFI boot tool path
current_cmdline=$(cat "$CMDLINE_FILE")
new_cmdline="$current_cmdline"
[[ "$new_cmdline" =~ intel_iommu=on ]] || new_cmdline="$new_cmdline intel_iommu=on"
[[ "$new_cmdline" =~ iommu=pt ]] || new_cmdline="$new_cmdline iommu=pt"
new_cmdline=$(echo "$new_cmdline" | tr -s ' ' | sed 's/^ //;s/ $//')
echo "$new_cmdline" > "$CMDLINE_FILE"
echo "Written: $CMDLINE_FILE"
echo " $new_cmdline"
proxmox-boot-tool refresh
echo "Boot tool refreshed."
else
# Legacy GRUB path
GRUB_FILE="/etc/default/grub"
echo "No $CMDLINE_FILE found — using GRUB at $GRUB_FILE"
current_cmdline=$(grep '^GRUB_CMDLINE_LINUX_DEFAULT=' "$GRUB_FILE" | sed 's/GRUB_CMDLINE_LINUX_DEFAULT="\(.*\)"/\1/')
new_cmdline="$current_cmdline"
[[ "$new_cmdline" =~ intel_iommu=on ]] || new_cmdline="$new_cmdline intel_iommu=on"
[[ "$new_cmdline" =~ iommu=pt ]] || new_cmdline="$new_cmdline iommu=pt"
new_cmdline=$(echo "$new_cmdline" | tr -s ' ' | sed 's/^ //;s/ $//')
sed -i "s|^GRUB_CMDLINE_LINUX_DEFAULT=.*|GRUB_CMDLINE_LINUX_DEFAULT=\"$new_cmdline\"|" "$GRUB_FILE"
echo "Written: $GRUB_FILE"
echo " GRUB_CMDLINE_LINUX_DEFAULT=\"$new_cmdline\""
update-grub
echo "GRUB updated."
fi
current_cmdline=$(cat "$CMDLINE_FILE")
new_cmdline="$current_cmdline"
[[ "$new_cmdline" =~ intel_iommu=on ]] || new_cmdline="$new_cmdline intel_iommu=on"
[[ "$new_cmdline" =~ iommu=pt ]] || new_cmdline="$new_cmdline iommu=pt"
# Deduplicate spaces
new_cmdline=$(echo "$new_cmdline" | tr -s ' ' | sed 's/^ //;s/ $//')
echo "$new_cmdline" > "$CMDLINE_FILE"
echo "Written: $CMDLINE_FILE"
echo " $new_cmdline"
proxmox-boot-tool refresh
echo "Boot tool refreshed."
# ── Step 4: Blacklist host GPU drivers ────────────────────────────────────────
echo ""