update 1.2.2.2 beta

This commit is contained in:
MacRimi
2026-07-03 18:59:45 +02:00
parent eb67fb9bd9
commit 35cb10ff44
8 changed files with 881 additions and 504 deletions

View File

@@ -40,9 +40,8 @@ fi
: "${HB_RESTORE_INCLUDE_ZFS:=0}"
: "${HB_COMPAT_CROSS_VERSION:=0}"
: "${HB_KERNEL_PIN_ACTION:=none}"
: "${HB_KERNEL_PIN_KVER:=}"
: "${HB_KERNEL_PIN_PKG:=}"
: "${HB_COMPAT_KERNEL_DIRECTION:=same}"
: "${HB_HYDRATION_APPLIED:=0}"
if [[ ! -f "$APPLY_LIST" ]]; then
echo "Apply list missing: $APPLY_LIST"
@@ -50,13 +49,11 @@ if [[ ! -f "$APPLY_LIST" ]]; then
exit 1
fi
echo "Pending dir: $PENDING_DIR"
echo "Apply list: $APPLY_LIST"
echo "Include ZFS: $HB_RESTORE_INCLUDE_ZFS"
echo "Cross-version: $HB_COMPAT_CROSS_VERSION"
echo "Kernel pin act: $HB_KERNEL_PIN_ACTION"
echo "Kernel pin ver: $HB_KERNEL_PIN_KVER"
echo "Kernel pin pkg: $HB_KERNEL_PIN_PKG"
echo "Pending dir: $PENDING_DIR"
echo "Apply list: $APPLY_LIST"
echo "Include ZFS: $HB_RESTORE_INCLUDE_ZFS"
echo "Cross-version: $HB_COMPAT_CROSS_VERSION"
echo "Kernel direction: $HB_COMPAT_KERNEL_DIRECTION"
# Hardware-drift skips persisted by _rs_prepare_pending_restore.
# Each line is an absolute path; we drop any rel path that matches
@@ -268,6 +265,16 @@ EOF
NEEDS_GRUB=1 ;;
esac
done < "$APPLY_LIST"
# bk_older hydration writes tokens/modules/files DIRECTLY to
# the live target (bypassing the apply_list because the whole
# paths are in RS_SKIP_PATHS). Those changes still need
# update-initramfs + update-grub / proxmox-boot-tool refresh
# to take effect on the next boot — force the flags so the
# post-boot script picks them up.
if [[ "${HB_HYDRATION_APPLIED:-0}" == "1" ]]; then
NEEDS_INITRAMFS=1
NEEDS_GRUB=1
fi
echo "Post-boot maintenance flags: initramfs=$NEEDS_INITRAMFS grub=$NEEDS_GRUB"
# Marker as env-style key=value so the post-boot script
@@ -310,60 +317,6 @@ UNITEOF
systemctl daemon-reload >/dev/null 2>&1 || true
systemctl enable proxmenux-apply-cluster-postboot.service >/dev/null 2>&1 || true
# ── Cross-kernel: install (if needed) + pin backup's kernel ──
# When the backup was taken on a different kernel major.minor
# than the target, the restore flow pre-computed a plan telling
# us whether the backup's kernel is already on the target or
# can be pulled from Proxmox repos. Acting here — during the
# onboot restore, before the cluster-postboot fires — gives us
# a controlled reboot into the pinned kernel, so the DKMS
# auto-reinstall in postboot builds every module against the
# right ABI (the kernel the operator's backup actually expects).
_kernel_pin_reboot_needed=0
if [[ "$HB_KERNEL_PIN_ACTION" != "none" && -n "$HB_KERNEL_PIN_KVER" ]]; then
echo ""
echo "── Cross-kernel: preparing kernel $HB_KERNEL_PIN_KVER ──"
if [[ "$HB_KERNEL_PIN_ACTION" == "installable" ]]; then
echo "Installing $HB_KERNEL_PIN_PKG from Proxmox repositories..."
apt-get update -qq 2>&1 | tail -5
if DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends "$HB_KERNEL_PIN_PKG" 2>&1 | tail -10; then
echo "$HB_KERNEL_PIN_PKG installed"
else
echo " ✗ apt install failed — pin will fall back to whatever kernels are present"
fi
fi
if command -v proxmox-boot-tool >/dev/null 2>&1; then
proxmox-boot-tool kernel pin "$HB_KERNEL_PIN_KVER" 2>&1 | sed 's/^/ pin: /'
proxmox-boot-tool refresh 2>&1 | sed 's/^/ refresh: /'
_kernel_pin_reboot_needed=1
else
echo " ! proxmox-boot-tool not available — kernel pin skipped"
fi
fi
if (( _kernel_pin_reboot_needed == 1 )); then
# Do NOT start the cluster-postboot service in this boot.
# We must reboot first so the kernel pin takes effect;
# once the machine is back up on the pinned kernel, the
# postboot service (enabled with a ConditionPathExists on
# cluster-apply-pending) will fire automatically and its
# DKMS reinstalls will target the correct kernel.
echo ""
echo "Rebooting into pinned kernel $HB_KERNEL_PIN_KVER..."
echo "completed" >"$STATE_FILE" 2>/dev/null || true
# Mark this restore as completed so the on-boot service
# doesn't re-fire after we reboot.
_rid="$(basename "$PENDING_DIR")"
mv "$PENDING_DIR" "${PENDING_BASE}/completed/${_rid}" >/dev/null 2>&1 || true
rm -f "$CURRENT_LINK" >/dev/null 2>&1 || true
systemctl disable proxmenux-restore-onboot.service >/dev/null 2>&1 || true
systemctl daemon-reload >/dev/null 2>&1 || true
sync
systemctl --no-block reboot
exit 0
fi
# Same-kernel path: fire cluster-postboot inline in this boot.
# `systemctl enable` only adds the unit to multi-user.target.wants/.
# It does NOT pull the unit into the currently-running boot
# transaction — by the time we run, multi-user.target may have

View File

@@ -2061,9 +2061,8 @@ CREATED_AT=${created_at}
HB_RESTORE_INCLUDE_ZFS=${HB_RESTORE_INCLUDE_ZFS:-0}
HB_ROLLBACK_EXECUTE=${HB_ROLLBACK_EXECUTE:-0}
HB_COMPAT_CROSS_VERSION=${HB_COMPAT_CROSS_VERSION:-0}
HB_KERNEL_PIN_ACTION=${HB_KERNEL_PIN_ACTION:-none}
HB_KERNEL_PIN_KVER=${HB_KERNEL_PIN_KVER:-}
HB_KERNEL_PIN_PKG=${HB_KERNEL_PIN_PKG:-}
HB_COMPAT_KERNEL_DIRECTION=${HB_COMPAT_KERNEL_DIRECTION:-same}
HB_HYDRATION_APPLIED=${HB_HYDRATION_APPLIED:-0}
EOF
# Persist hardware-drift skips so apply_pending_restore.sh can filter
# them at boot. The RS_SKIP_PATHS env var only lives in the restore
@@ -2124,6 +2123,328 @@ _rs_handle_ssh_network_risk() {
return 0
}
# ==========================================================
# Kernel-agnostic hydration for bk_older restores
# ==========================================================
# In bk_older direction we block whole-file restores of the
# kernel/boot-tied paths (see hb_unsafe_paths_cross_version) to
# stop the target's boot from being poisoned by systemd unit
# overrides, APT sources, GRUB defaults, etc. from an older
# base. But the operator's OWN customisations inside those
# paths (IOMMU cmdline, VFIO modules, usb-storage.quirks, custom
# GRUB_TIMEOUT, ...) are kernel-agnostic and should still land
# on the target — otherwise a fresh install after a restore
# forgets everything the operator tuned.
#
# The hydration functions below implement a merge-not-copy
# strategy: they read the operator-authored bits from the
# manifest (cmdline_extra, modules_loaded_at_boot) or from
# specific whitelisted files in the staging rootfs, and merge
# them into the target's live config without touching keys or
# tokens the target already carries. All four phases are
# idempotent and additive; running them twice is a no-op.
# ==========================================================
_rs_hyd_manifest() { echo "$1/metadata/manifest.json"; }
# List operator-authored kernel cmdline tokens from the manifest,
# one per line. Empty output = nothing to merge.
_rs_hyd_cmdline_tokens() {
local manifest="$1"
[[ -f "$manifest" ]] || return 0
command -v jq >/dev/null 2>&1 || return 0
jq -r '.kernel_params.cmdline_extra // [] | .[]' "$manifest" 2>/dev/null || true
}
# List modules the backup loaded at boot (from /etc/modules on
# the source host), one per line.
_rs_hyd_modules_at_boot() {
local manifest="$1"
[[ -f "$manifest" ]] || return 0
command -v jq >/dev/null 2>&1 || return 0
jq -r '.kernel_params.modules_loaded_at_boot // [] | .[]' "$manifest" 2>/dev/null || true
}
# Read a KEY=VALUE line from a `/etc/default/grub`-style file.
# Prints the raw VALUE part (including surrounding quotes) if
# present, empty otherwise. Handles both `KEY=value` and
# `KEY="value with spaces"` forms.
_rs_hyd_grub_read_key() {
local file="$1" key="$2"
[[ -f "$file" ]] || return 0
# Grab the LAST assignment (later wins in shell-style config),
# skip comment lines, tolerate leading whitespace.
grep -E "^[[:space:]]*${key}=" "$file" 2>/dev/null | tail -1 | sed -E "s/^[[:space:]]*${key}=//"
}
# Write or replace a KEY=VALUE line in a `/etc/default/grub`-style
# file. If the key already exists (uncommented), rewrites its
# line in place; otherwise appends the new line at the end. Leaves
# comment lines untouched.
_rs_hyd_grub_write_key() {
local file="$1" key="$2" value="$3"
[[ -f "$file" ]] || return 1
if grep -qE "^[[:space:]]*${key}=" "$file"; then
# In-place rewrite of the last matching line. Use sed with
# a temp file so partial failure doesn't corrupt the target.
local tmp
tmp="$(mktemp)"
awk -v k="$key" -v v="$value" '
BEGIN { pat = "^[[:space:]]*" k "=" }
$0 ~ pat { print k "=" v; next }
{ print }
' "$file" > "$tmp" && mv "$tmp" "$file"
else
printf '%s=%s\n' "$key" "$value" >> "$file"
fi
}
# Strip surrounding double quotes and split a GRUB_CMDLINE_-style
# value into whitespace-delimited tokens (one per line). Handles
# escaped inner quotes conservatively.
_rs_hyd_cmdline_split() {
local raw="$1"
raw="${raw%\"}"; raw="${raw#\"}"
raw="${raw%\'}"; raw="${raw#\'}"
# tr will collapse any run of whitespace; xargs normalises.
tr -s '[:space:]' '\n' <<<"$raw" | sed '/^$/d'
}
# Merge two cmdline strings: target wins on ties (same key), any
# backup token whose KEY (or bare flag) is not in target is
# appended. Prints the merged cmdline as a single line without
# surrounding quotes. Also returns 0 if any token was added, 1
# if nothing changed — useful for the caller to decide whether
# an update-grub / proxmox-boot-tool refresh is needed.
_rs_hyd_cmdline_merge() {
local target_line="$1" backup_line="$2"
local -A target_keys=()
local -a merged=()
local t bkey
while IFS= read -r t; do
[[ -z "$t" ]] && continue
merged+=("$t")
bkey="${t%%=*}"
target_keys["$bkey"]=1
done < <(_rs_hyd_cmdline_split "$target_line")
local added=0
while IFS= read -r t; do
[[ -z "$t" ]] && continue
bkey="${t%%=*}"
if [[ -z "${target_keys[$bkey]:-}" ]]; then
merged+=("$t")
target_keys["$bkey"]=1
added=1
fi
done < <(_rs_hyd_cmdline_split "$backup_line")
printf '%s' "${merged[*]}"
(( added )) && return 0 || return 1
}
# Phase 1a — GRUB path
# ────────────────────
# Merge cmdline tokens from the backup's cmdline_extra into the
# target's live GRUB_CMDLINE_LINUX_DEFAULT (never overwrite existing
# tokens or keys). Also merge whitelisted GRUB_* keys from the
# backup's /etc/default/grub whose values differ. Reports one
# summary line per action into the global RS_HYDRATION_ACTIONS[].
# $3=mode: "plan" reports would-be actions only, "commit" writes.
_rs_hyd_grub() {
local backup_rootfs="$1" manifest="$2" mode="${3:-commit}"
local target="/etc/default/grub"
local bk_file="$backup_rootfs/etc/default/grub"
[[ -f "$target" ]] || return 0
local changed=0
# ── cmdline merge ──
local bk_tokens
bk_tokens="$(_rs_hyd_cmdline_tokens "$manifest" | tr '\n' ' ')"
if [[ -n "${bk_tokens// /}" ]]; then
local live_default merged_default added_tokens
live_default="$(_rs_hyd_grub_read_key "$target" GRUB_CMDLINE_LINUX_DEFAULT)"
local stripped="${live_default%\"}"; stripped="${stripped#\"}"
if merged_default="$(_rs_hyd_cmdline_merge "$stripped" "$bk_tokens")"; then
added_tokens="$(comm -13 \
<(printf '%s\n' $stripped | sort -u) \
<(printf '%s\n' $merged_default | sort -u) 2>/dev/null | tr '\n' ' ')"
[[ "$mode" == "commit" ]] && _rs_hyd_grub_write_key "$target" GRUB_CMDLINE_LINUX_DEFAULT "\"${merged_default}\""
RS_HYDRATION_ACTIONS+=("GRUB_CMDLINE_LINUX_DEFAULT — merge tokens: ${added_tokens}")
changed=1
fi
fi
# ── whitelisted GRUB_* keys from the backup file ──
if [[ -f "$bk_file" ]]; then
local key bk_val live_val
while IFS= read -r key; do
[[ -z "$key" ]] && continue
[[ "$key" == "GRUB_CMDLINE_LINUX_DEFAULT" || "$key" == "GRUB_CMDLINE_LINUX" ]] && continue
bk_val="$(_rs_hyd_grub_read_key "$bk_file" "$key")"
[[ -z "$bk_val" ]] && continue
live_val="$(_rs_hyd_grub_read_key "$target" "$key")"
if [[ "$bk_val" != "$live_val" ]]; then
[[ "$mode" == "commit" ]] && _rs_hyd_grub_write_key "$target" "$key" "$bk_val"
RS_HYDRATION_ACTIONS+=("${key} — restore operator value from backup")
changed=1
fi
done < <(hb_grub_keys_whitelist)
fi
(( changed )) && return 0 || return 1
}
# Phase 1b — systemd-boot / ZFS path
# ──────────────────────────────────
# /etc/kernel/cmdline is a single-line file holding the ENTIRE
# kernel cmdline (root=, boot=, rootflags=, plus operator tokens).
# We MUST NOT copy it verbatim across kernels — the target's fresh
# install references its own ZFS pool. Instead: keep the target's
# boot boilerplate, append the operator tokens from cmdline_extra
# that aren't already there.
_rs_hyd_kernel_cmdline() {
local manifest="$1" mode="${2:-commit}"
local target="/etc/kernel/cmdline"
[[ -f "$target" ]] || return 0
local bk_tokens
bk_tokens="$(_rs_hyd_cmdline_tokens "$manifest" | tr '\n' ' ')"
[[ -z "${bk_tokens// /}" ]] && return 1
local live merged added_tokens
live="$(cat "$target" 2>/dev/null | tr -d '\n')"
if merged="$(_rs_hyd_cmdline_merge "$live" "$bk_tokens")"; then
added_tokens="$(comm -13 \
<(printf '%s\n' $live | sort -u) \
<(printf '%s\n' $merged | sort -u) 2>/dev/null | tr '\n' ' ')"
[[ "$mode" == "commit" ]] && printf '%s\n' "$merged" > "$target"
RS_HYDRATION_ACTIONS+=("/etc/kernel/cmdline (systemd-boot/ZFS) — merge tokens: ${added_tokens}")
return 0
fi
return 1
}
# Phase 2 — /etc/modules merge
# ────────────────────────────
# Append modules from modules_loaded_at_boot that are whitelisted
# AND not already present in /etc/modules. Preserves comments and
# existing entries.
_rs_hyd_modules() {
local manifest="$1" mode="${2:-commit}"
local target="/etc/modules"
[[ -f "$target" ]] || return 0
local -A live_modules=() whitelist=()
local m line
while IFS= read -r line; do
line="${line%%#*}"
m="$(printf '%s' "$line" | xargs)"
[[ -n "$m" ]] && live_modules["$m"]=1
done < "$target"
while IFS= read -r m; do
m="$(printf '%s' "$m" | xargs)"
[[ -n "$m" ]] && whitelist["$m"]=1
done < <(hb_hydration_module_whitelist)
local added=0
while IFS= read -r m; do
m="$(printf '%s' "$m" | xargs)"
[[ -z "$m" ]] && continue
[[ -z "${whitelist[$m]:-}" ]] && continue
[[ -n "${live_modules[$m]:-}" ]] && continue
[[ "$mode" == "commit" ]] && printf '%s\n' "$m" >> "$target"
live_modules["$m"]=1
RS_HYDRATION_ACTIONS+=("/etc/modules — add: $m")
added=1
done < <(_rs_hyd_modules_at_boot "$manifest")
(( added )) && return 0 || return 1
}
# Phase 3 — whitelisted files
# ───────────────────────────
# For each pattern in hb_hydration_files_patterns, copy the
# matching file from the staging rootfs to the live target IF the
# backup carries it and its content differs from the live copy.
_rs_hyd_files() {
local backup_rootfs="$1" mode="${2:-commit}"
local pattern src dst
local copied=0
while IFS= read -r pattern; do
[[ -z "$pattern" ]] && continue
while IFS= read -r src; do
[[ -z "$src" || ! -f "$src" ]] && continue
dst="${src#${backup_rootfs}}"
[[ "$dst" == /* ]] || continue
if ! cmp -s "$src" "$dst" 2>/dev/null; then
if [[ "$mode" == "commit" ]]; then
mkdir -p "$(dirname "$dst")" 2>/dev/null || true
cp -a "$src" "$dst" 2>/dev/null || continue
fi
RS_HYDRATION_ACTIONS+=("${dst} — restore from backup")
copied=1
fi
done < <(compgen -G "${backup_rootfs}${pattern}" 2>/dev/null || true)
done < <(hb_hydration_files_patterns)
(( copied )) && return 0 || return 1
}
# Orchestrator for the 4 phases. Two modes:
# plan — populates RS_HYDRATION_ACTIONS and RS_HYDRATION_SUMMARY
# without writing to any live file. Safe to call before
# the operator's final yes/no.
# commit — actually writes to the live target and exports
# HB_HYDRATION_APPLIED=1 if anything changed, so that
# plan.env carries the flag and apply_pending_restore.sh
# forces NEEDS_INITRAMFS/NEEDS_GRUB.
# Both modes are safe to call multiple times: writes are additive
# and idempotent, plan is side-effect free.
_rs_apply_bk_older_hydration() {
local staging_root="$1" mode="${2:-commit}"
local backup_rootfs="$staging_root/rootfs"
local manifest
manifest="$(_rs_hyd_manifest "$staging_root")"
RS_HYDRATION_ACTIONS=()
RS_HYDRATION_SUMMARY=""
[[ -d "$backup_rootfs" ]] || return 0
local bootloader
bootloader="$(hb_detect_bootloader)"
local any=0
case "$bootloader" in
systemd-boot)
_rs_hyd_kernel_cmdline "$manifest" "$mode" && any=1 || true
;;
grub|*)
_rs_hyd_grub "$backup_rootfs" "$manifest" "$mode" && any=1 || true
;;
esac
_rs_hyd_modules "$manifest" "$mode" && any=1 || true
_rs_hyd_files "$backup_rootfs" "$mode" && any=1 || true
if (( any )); then
if [[ "$mode" == "commit" ]]; then
HB_HYDRATION_APPLIED=1
export HB_HYDRATION_APPLIED
fi
local body a header
if [[ "$mode" == "plan" ]]; then
header="$(translate "Operator config that WILL be re-applied via kernel-agnostic merge")"
else
header="$(translate "Operator config re-applied via kernel-agnostic merge")"
fi
body="\Zb${header}\ZB"$'\n\n'
for a in "${RS_HYDRATION_ACTIONS[@]}"; do
body+=" \Z2•\Zn ${a}"$'\n'
done
RS_HYDRATION_SUMMARY="$body"
fi
return 0
}
_rs_run_complete_guided() {
local staging_root="$1"
local -a all_paths=()
@@ -2218,15 +2539,12 @@ _rs_run_complete_guided() {
fi
# ── Cross-version safe-restore filter ────────────────────
# When the backup was taken on a different PVE major or a
# different kernel major.minor, restoring boot/kernel/apt
# config on top of the current install is what causes the
# post-reboot kernel panic. Fold those paths into RS_SKIP_PATHS
# so the same downstream machinery that already honours skips
# (_rs_apply, _rs_collect_pending_paths, apply_pending_restore)
# keeps them out of the restore.
# Only activates on `bk_older` (backup kernel older than target).
# The reverse direction (`bk_newer`) restores cleanly as-is —
# verified empirically on multiple 9.2 → 9.1 restores with GPU
# passthrough / IOMMU / DKMS drivers.
RS_CROSS_VERSION_SKIPS=""
if [[ "${HB_COMPAT_CROSS_VERSION:-0}" == "1" ]]; then
if [[ "${HB_COMPAT_KERNEL_DIRECTION:-same}" == "bk_older" ]]; then
local -a cv_skipped=()
local cv_line cv_path cv_reason cv_rel
# The drift block above trims the trailing newline off
@@ -2265,6 +2583,15 @@ _rs_run_complete_guided() {
RS_SKIP_PATHS="${RS_SKIP_PATHS#$'\n'}"
RS_SKIP_PATHS="${RS_SKIP_PATHS%$'\n'}"
export RS_SKIP_PATHS
# Kernel-agnostic hydration of operator-authored bits that
# would otherwise be lost with the whole-file skip above.
# See _rs_apply_bk_older_hydration for the four merge phases.
# Runs in "plan" mode BEFORE the confirm dialog so
# RS_HYDRATION_SUMMARY can preview what will be re-applied;
# the commit runs AFTER the operator says yes, right before
# the hot apply.
_rs_apply_bk_older_hydration "$staging_root" plan
fi
# Build the rich confirmation body. Replaces the previous 4-strategy
@@ -2334,6 +2661,12 @@ _rs_run_complete_guided() {
if [[ -n "${RS_CROSS_VERSION_SKIPS:-}" ]]; then
body+=$'\n'"${RS_CROSS_VERSION_SKIPS}"
fi
# And the counterpart: what gets re-applied via kernel-agnostic
# merge. Rendered in green because it's what the operator gets
# back for free even though the whole file was skipped above.
if [[ -n "${RS_HYDRATION_SUMMARY:-}" ]]; then
body+=$'\n'"${RS_HYDRATION_SUMMARY}"
fi
body+=$'\n'"\Zb\Z4$(translate "A reboot is required to finish the restore.")\Zn"$'\n\n'
body+="$(translate "If notifications are enabled (Telegram/Discord/ntfy/...), you will receive a \"Host restore finished\" message when all background tasks complete.")"$'\n\n'
body+="\Zb$(translate "Continue?")\ZB"
@@ -2385,6 +2718,15 @@ _rs_run_complete_guided() {
show_proxmenux_logo
msg_title "$(translate "Applying safe paths and preparing pending restore")"
# Commit the kernel-agnostic hydration BEFORE hot apply so
# /etc/modules, /etc/default/grub (or /etc/kernel/cmdline),
# and whitelisted vfio/nvidia files carry the operator's
# tokens by the time apply_pending_restore.sh reads its
# pending list. plan.env picks up HB_HYDRATION_APPLIED=1
# and forces NEEDS_INITRAMFS/NEEDS_GRUB post-boot.
if [[ "${HB_COMPAT_KERNEL_DIRECTION:-same}" == "bk_older" ]]; then
_rs_apply_bk_older_hydration "$staging_root" commit
fi
[[ "$hot_count" -gt 0 ]] && _rs_apply "$staging_root" hot
local -a pending_paths=()
@@ -2581,12 +2923,69 @@ _rs_select_component_paths() {
# ── Dialog checklist (one entry per real backup path) ──
if [[ -z "$_rsp_selected" ]]; then
# In bk_older restores, kernel-tied paths are excluded from
# the list entirely (bash `dialog` has no gray-out primitive,
# so we hide the unsafe entries and surface their names in a
# msgbox up front). Uses the same list `hb_unsafe_paths_cross_version`
# returns — single source of truth with the safe filter used
# by Full restore.
local -A _rsp_blocked=()
local -a _rsp_blocked_list=()
if [[ "${HB_COMPAT_KERNEL_DIRECTION:-same}" == "bk_older" ]]; then
local _rsp_bp _rsp_reason
while IFS=$'\t' read -r _rsp_bp _rsp_reason; do
[[ -z "$_rsp_bp" ]] && continue
local _rsp_bp_rel="${_rsp_bp#/}"
_rsp_blocked["$_rsp_bp_rel"]=1
done < <(hb_unsafe_paths_cross_version)
fi
local -a _rsp_checklist=()
local _rsp_p
for _rsp_p in "${_rsp_backup[@]}"; do
# Skip paths whose parent (or itself) is on the blocked
# list: `/etc/systemd/system/foo` counts as blocked when
# `/etc/systemd/system` is on the list.
local _rsp_hit="" _rsp_probe="$_rsp_p"
while [[ -n "$_rsp_probe" ]]; do
if [[ -n "${_rsp_blocked[$_rsp_probe]:-}" ]]; then
_rsp_hit="/$_rsp_probe"
break
fi
[[ "$_rsp_probe" != *"/"* ]] && break
_rsp_probe="${_rsp_probe%/*}"
done
if [[ -n "$_rsp_hit" ]]; then
_rsp_blocked_list+=("$_rsp_hit")
continue
fi
_rsp_checklist+=("$_rsp_p" "/$_rsp_p" "off")
done
# If any paths were dropped, show them in a msgbox before the
# picker so the operator understands why they don't appear.
if (( ${#_rsp_blocked_list[@]} > 0 )); then
# Deduplicate — a folder can hide many child paths.
local -A _rsp_seen=()
local _rsp_list_str=""
local _rsp_e
for _rsp_e in "${_rsp_blocked_list[@]}"; do
[[ -n "${_rsp_seen[$_rsp_e]:-}" ]] && continue
_rsp_seen["$_rsp_e"]=1
_rsp_list_str+="${_rsp_e}"$'\n'
done
dialog --backtitle "ProxMenux" --colors \
--title "$(translate "Cross-kernel — paths hidden from picker")" \
--msgbox "$(translate "The following backup paths are kernel-tied and would break the target host if restored across kernel versions. They are excluded from the selection below:")"$'\n\n'"${_rsp_list_str}"$'\n'"$(translate "If you need any of these, restore this backup on a host with the same kernel major.minor.")" \
20 84
fi
if (( ${#_rsp_checklist[@]} == 0 )); then
dialog --backtitle "ProxMenux" --title "$(translate "Nothing selectable")" \
--msgbox "$(translate "Every path in this backup is kernel-tied and cannot be restored across kernel versions.")" 9 78
return 1
fi
_rsp_selected=$(dialog --backtitle "ProxMenux" --separate-output \
--title "$(translate "Custom restore by paths")" \
--checklist "\n$(translate "Select the paths to restore (one per backup entry):")" \
@@ -2655,6 +3054,15 @@ _rs_run_custom_restore() {
local hot_count="$RS_SEL_HOT"
local pending_count=$(( RS_SEL_REBOOT + RS_SEL_DANGEROUS ))
# In bk_older, preview the kernel-agnostic hydration so the
# operator sees UPFRONT what will be re-applied automatically
# (IOMMU cmdline, VFIO modules, custom GRUB_TIMEOUT, etc.)
# even though the whole-file paths remain blocked from the
# custom picker.
if [[ "${HB_COMPAT_KERNEL_DIRECTION:-same}" == "bk_older" ]]; then
_rs_apply_bk_older_hydration "$staging_root" plan
fi
local body
body="\Zb$(translate "About to restore") ${RS_SEL_TOTAL} $(translate "selected path(s):")\ZB"$'\n\n'
if (( hot_count > 0 )); then
@@ -2663,6 +3071,9 @@ _rs_run_custom_restore() {
if (( pending_count > 0 )); then
body+="$(translate "Schedule") \Zb\Z4${pending_count}\Zn $(translate "for next boot (needs reboot to take effect)")"$'\n'
fi
if [[ -n "${RS_HYDRATION_SUMMARY:-}" ]]; then
body+=$'\n'"${RS_HYDRATION_SUMMARY}"
fi
if (( pending_count > 0 )); then
body+=$'\n'"\Zb\Z4$(translate "A reboot will be required to complete the restore.")\Zn"$'\n'
fi
@@ -2670,13 +3081,20 @@ _rs_run_custom_restore() {
if ! dialog --backtitle "ProxMenux" --colors \
--title "$(translate "Confirm custom restore")" \
--yesno "$body" 14 82; then
--yesno "$body" 22 82; then
return 1
fi
show_proxmenux_logo
msg_title "$(translate "Applying custom restore")"
# Commit the hydration BEFORE hot apply. Same rationale as in
# the Complete flow: plan.env picks up HB_HYDRATION_APPLIED=1
# so apply_pending_restore.sh forces initramfs+grub regen.
if [[ "${HB_COMPAT_KERNEL_DIRECTION:-same}" == "bk_older" ]]; then
_rs_apply_bk_older_hydration "$staging_root" commit
fi
if (( hot_count > 0 )); then
_rs_apply "$staging_root" hot "${selected_paths[@]}"
fi
@@ -2687,6 +3105,24 @@ _rs_run_custom_restore() {
if _rs_prepare_pending_restore "$staging_root" "${pending_paths[@]}"; then
msg_warn "$(translate "Reboot is required to complete the pending restore.")"
fi
elif [[ "${HB_HYDRATION_APPLIED:-0}" == "1" ]]; then
# Custom restore picked only hot paths, but hydration
# merged tokens into /etc/default/grub or /etc/kernel/cmdline
# and/or added modules to /etc/modules. Those need
# initramfs + bootloader refresh before the next reboot to
# be effective. No post-boot dispatcher runs in this
# branch (plan.env is only written by
# _rs_prepare_pending_restore), so we do the reflows here.
msg_info "$(translate "Regenerating boot artifacts for the merged kernel-agnostic changes...")"
update-initramfs -u -k all >/dev/null 2>&1 || true
local _bl
_bl="$(hb_detect_bootloader)"
case "$_bl" in
systemd-boot) proxmox-boot-tool refresh >/dev/null 2>&1 || true ;;
grub|*) update-grub >/dev/null 2>&1 || true ;;
esac
stop_spinner 2>/dev/null || true
msg_ok "$(translate "Boot artifacts regenerated — reboot the host to activate the merged config.")"
fi
_rs_finish_flow
@@ -2984,6 +3420,25 @@ _rs_apply_menu() {
# confirmation dialog (option 1). It's still reachable on demand
# from option 6 of this menu.
# ── Cross-kernel notice (only for bk_older) ───────────────
# When the backup was taken on a kernel older than the target,
# let the operator know BEFORE they see the mode menu that
# Full restore will silently skip kernel-tied paths and that
# Custom will present them as blocked. Nothing to click through
# for the reverse direction (bk_newer) — those restores go
# through as-is because empirical testing shows they work.
if [[ "${HB_COMPAT_KERNEL_DIRECTION:-same}" == "bk_older" ]]; then
local _bkk="" _cur_k _cur_mm
[[ -f "$staging_root/metadata/run_info.env" ]] && \
_bkk=$(grep -m1 '^kernel=' "$staging_root/metadata/run_info.env" 2>/dev/null | cut -d= -f2-)
_cur_k=$(uname -r 2>/dev/null || echo "?")
_cur_mm=$(echo "$_cur_k" | cut -d. -f1-2)
dialog --backtitle "ProxMenux" --colors \
--title "$(translate "Cross-kernel restore — safe subset only")" \
--msgbox "$(translate "This backup was taken on kernel"): \Zb${_bkk}\ZB"$'\n'"$(translate "Target host runs"): \Zb${_cur_k}\ZB"$'\n\n'"\Zb$(translate "Only the essential configuration will be restored"):\ZB $(translate "/etc/pve, network, ssh, users, cron, ProxMenux state, etc.")"$'\n\n'"$(translate "Kernel-tied paths (boot config, /etc/systemd/system, initramfs config, apt sources, ZFS state, ...) will be skipped automatically to protect the target's boot.")"$'\n\n'"$(translate "If you need a complete bit-for-bit restore, use a backup taken on kernel") \Zb${_cur_mm}.x\ZB $(translate "or reinstall Proxmox with a version that ships kernel") \Zb${_bkk}\ZB." \
22 84
fi
while true; do
local choice
choice=$(dialog --backtitle "ProxMenux" \
@@ -3071,39 +3526,6 @@ restore_menu() {
# silent same-host path and the loud cross-host path.
hb_compat_check "$staging_root"
# Cross-kernel restore requires the backup's kernel to be
# bootable on the target — either already installed or
# obtainable from the Proxmox repositories. When it's
# neither, refuse cleanly: continuing would leave the
# operator with drivers built against a kernel that isn't
# present, and DKMS would silently pin the wrong ABI.
if [[ "${HB_COMPAT_CROSS_VERSION:-0}" == "1" ]]; then
local _bk_kernel=""
if [[ -f "$staging_root/metadata/run_info.env" ]]; then
_bk_kernel=$(grep -m1 '^kernel=' "$staging_root/metadata/run_info.env" 2>/dev/null | cut -d= -f2-)
fi
if [[ -n "$_bk_kernel" ]]; then
hb_kernel_pin_plan "$_bk_kernel"
if [[ "$HB_KERNEL_PIN_ACTION" == "unavailable" ]]; then
# Log so the operator can inspect after the fact.
local _refuse_log="/var/log/proxmenux/restore-refused-$(date +%Y%m%d_%H%M%S).log"
mkdir -p "$(dirname "$_refuse_log")" 2>/dev/null
{
echo "Refused at: $(date -Iseconds)"
echo "Backup kernel: $_bk_kernel"
echo "Target running: $(uname -r)"
echo "Reason: $HB_KERNEL_PIN_REASON"
} > "$_refuse_log"
dialog --backtitle "ProxMenux" --colors \
--title "$(translate "Restore refused — incompatible kernel")" \
--msgbox "\Zb\Z1$(translate "This backup was taken on kernel"):\Zn \Zb${_bk_kernel}\ZB"$'\n\n'"$(translate "That kernel is") ${HB_KERNEL_PIN_REASON}."$'\n\n'"$(translate "Restoring without a matching kernel would leave drivers and modules built against a kernel that is not present on this host — the system may fail to boot or run degraded.")"$'\n\n'"\Zb$(translate "How to proceed"):\ZB"$'\n'"$(translate "Install Proxmox VE from an ISO whose kernel matches")"$'\n'"$(translate "Or fetch the kernel manually:") apt install proxmox-kernel-${_bk_kernel}"$'\n'"$(translate "Then relaunch the restore.")"$'\n\n'"$(translate "Details logged at"): $_refuse_log" \
22 84
rm -rf "$staging_root"
continue
fi
fi
fi
if hb_show_compat_report; then
if _rs_apply_menu "$staging_root"; then
rm -rf "$staging_root"

View File

@@ -2711,85 +2711,6 @@ hb_apply_nic_remaps() {
# Output: one line per path, tab-separated: <abs_path>\t<reason>
# The reason is a short label used verbatim in the confirm dialog.
# ==========================================================
# ==========================================================
# KERNEL PIN PLAN — cross-kernel restore only
# ==========================================================
# When the backup was taken on a kernel major.minor different
# from the target's running kernel, the safe and universally
# correct action is to boot the target with the backup's kernel
# after the restore. That way every driver / DKMS module that
# the backup expects (nvidia, coral, intel_gpu, plus every
# out-of-tree ZFS build) targets a kernel that actually exists
# and matches, and the auto-reinstall on post-boot builds them
# against the right ABI. Universal: works for ZFS root, LVM/ext4
# root, BIOS or UEFI hosts alike.
#
# This function decides how to obtain that kernel on the target
# and publishes the plan for the restore flow to act on.
#
# Input:
# $1 bk_kernel — kernel release string from the backup
# (e.g. "6.17.2-1-pve")
# Output (env vars, all exported):
# HB_KERNEL_PIN_ACTION installed | installable | unavailable
# HB_KERNEL_PIN_PKG candidate package name to install (empty
# when installed / unavailable)
# HB_KERNEL_PIN_KVER the kernel release to pin (same as $1)
# Also fills HB_KERNEL_PIN_REASON with a short human message
# when action is "unavailable" (for the refuse dialog).
# ==========================================================
hb_kernel_pin_plan() {
local bk_kernel="$1"
export HB_KERNEL_PIN_ACTION="unavailable"
export HB_KERNEL_PIN_PKG=""
export HB_KERNEL_PIN_KVER="$bk_kernel"
export HB_KERNEL_PIN_REASON=""
[[ -z "$bk_kernel" ]] && {
HB_KERNEL_PIN_REASON="backup did not record its kernel release"
return 0
}
# Signed package name convention on modern Proxmox: the actual
# binary kernel image ships as `proxmox-kernel-<ver>-signed`, the
# unsigned build is `proxmox-kernel-<ver>` (only in special cases).
# `pve-kernel-<ver>` was the legacy name pre-Proxmox 8; try both
# so this works whether the backup came from an older PVE.
local -a candidates=(
"proxmox-kernel-${bk_kernel}-signed"
"proxmox-kernel-${bk_kernel}"
"pve-kernel-${bk_kernel}"
)
local pkg
for pkg in "${candidates[@]}"; do
# Already installed → nothing to fetch, just pin later.
if dpkg-query -W -f='${Status}' "$pkg" 2>/dev/null \
| grep -q '^install ok installed$'; then
HB_KERNEL_PIN_ACTION="installed"
HB_KERNEL_PIN_PKG="$pkg"
return 0
fi
done
# Not installed. Refresh apt metadata quietly, then look each
# candidate up. `apt-cache policy` shows a non-empty "Candidate"
# only when there IS an installable version in the enabled repos.
apt-get update -qq >/dev/null 2>&1 || true
for pkg in "${candidates[@]}"; do
local cand
cand=$(apt-cache policy "$pkg" 2>/dev/null \
| awk '/Candidate:/ {print $2; exit}')
if [[ -n "$cand" && "$cand" != "(none)" ]]; then
HB_KERNEL_PIN_ACTION="installable"
HB_KERNEL_PIN_PKG="$pkg"
return 0
fi
done
HB_KERNEL_PIN_ACTION="unavailable"
HB_KERNEL_PIN_REASON="not installed on this host and not available in the configured Proxmox repositories"
return 0
}
hb_unsafe_paths_cross_version() {
cat <<'EOF'
/etc/default/grub GRUB defaults tied to prior kernel order
@@ -2811,15 +2732,116 @@ hb_unsafe_paths_cross_version() {
EOF
}
# HB_COMPAT_SAME_HOST → 1 if backup's hostname matches current
# HB_COMPAT_ANY_FAIL → 1 if at least one FAIL was raised
# HB_COMPAT_ANY_WARN → 1 if at least one WARN was raised
# HB_COMPAT_CROSS_VERSION → 1 if PVE major OR kernel major.minor differs
# (triggers the safe-restore path filter that
# skips grub/kernel/apt/dkms/... — see
# hb_unsafe_paths_cross_version)
# HB_COMPAT_RESULTS[] → array of "STATUS|category|message" entries
# where STATUS ∈ {PASS, INFO, WARN, FAIL}
# ==========================================================
# hb_detect_bootloader — "grub" | "systemd-boot" | "unknown"
# ==========================================================
# Proxmox uses systemd-boot on ZFS-on-root installs and GRUB on
# ext4/lvm. `proxmox-boot-tool status` reports both cases when
# the tool is present; on rescue paths without pbt we fall back
# to the presence of /etc/kernel/cmdline (systemd-boot) or
# /etc/default/grub (GRUB).
hb_detect_bootloader() {
if command -v proxmox-boot-tool >/dev/null 2>&1; then
local pbt
pbt="$(proxmox-boot-tool status 2>/dev/null || true)"
if grep -qi 'systemd-boot' <<<"$pbt"; then
echo "systemd-boot"; return 0
elif grep -qiE 'grub|BIOS' <<<"$pbt"; then
echo "grub"; return 0
fi
fi
if [[ -f /etc/kernel/cmdline ]]; then
echo "systemd-boot"
elif [[ -f /etc/default/grub ]]; then
echo "grub"
else
echo "unknown"
fi
}
# hb_grub_keys_whitelist — GRUB /etc/default/grub keys that are
# stable across PVE 9.x / kernel majors and worth merging from the
# backup on a bk_older restore. Excludes GRUB_DISTRIBUTOR (changes
# with the distro package) and keys whose values reference boot
# entries the target install regenerates (GRUB_SAVEDEFAULT).
hb_grub_keys_whitelist() {
cat <<'EOF'
GRUB_TIMEOUT
GRUB_TIMEOUT_STYLE
GRUB_DEFAULT
GRUB_TERMINAL
GRUB_TERMINAL_INPUT
GRUB_TERMINAL_OUTPUT
GRUB_DISABLE_OS_PROBER
GRUB_SERIAL_COMMAND
GRUB_CMDLINE_LINUX_DEFAULT
GRUB_CMDLINE_LINUX
GRUB_GFXMODE
GRUB_GFXPAYLOAD_LINUX
EOF
}
# hb_hydration_module_whitelist — module names safe to add to the
# target's /etc/modules from the backup's modules_loaded_at_boot
# on a bk_older restore. All are kernel-agnostic in name across
# 5.x → 7.x. Skips distro defaults (loop, dm-*) since a fresh
# install already loads them.
hb_hydration_module_whitelist() {
cat <<'EOF'
vfio
vfio_pci
vfio_iommu_type1
vfio_virqfd
kvm
kvm_intel
kvm_amd
nvidia
nvidia_drm
nvidia_modeset
nvidia_uvm
i915
xe
EOF
}
# hb_hydration_files_patterns — glob patterns (relative to root)
# for files that are safe to copy verbatim from the backup rootfs
# in a bk_older restore. The rule for inclusion: operator- or
# ProxMenux-authored file whose content uses stable syntax across
# kernel majors. Excludes distro-owned files (pve-blacklist.conf,
# mdadm.conf, nvme.conf) whose contents can evolve between releases.
hb_hydration_files_patterns() {
cat <<'EOF'
/etc/modprobe.d/proxmenux-*.conf
/etc/modprobe.d/vfio.conf
/etc/modprobe.d/vfio-pci.conf
/etc/modprobe.d/kvm.conf
/etc/modprobe.d/blacklist-nvidia.conf
/etc/modprobe.d/blacklist-nouveau.conf
/etc/modprobe.d/nvidia*.conf
/etc/modules-load.d/proxmenux-*.conf
/etc/modules-load.d/vfio*.conf
/etc/modules-load.d/nvidia*.conf
/etc/udev/rules.d/10-proxmenux-vfio-bind.rules
/etc/udev/rules.d/70-nvidia.rules
EOF
}
# HB_COMPAT_SAME_HOST → 1 if backup's hostname matches current
# HB_COMPAT_ANY_FAIL → 1 if at least one FAIL was raised
# HB_COMPAT_ANY_WARN → 1 if at least one WARN was raised
# HB_COMPAT_CROSS_VERSION → 1 if PVE major OR kernel major.minor differs
# HB_COMPAT_KERNEL_DIRECTION → "same" / "bk_older" / "bk_newer" — only
# "bk_older" activates the safe-subset
# restore that skips kernel-tied paths
# (grub, /etc/systemd/system, initramfs
# config, apt sources, ZFS state, …).
# "bk_newer" restores everything as
# same-version because empirical tests
# (9.2 → 9.1 with GPU passthrough +
# IOMMU) prove that direction is safe.
# HB_COMPAT_RESULTS[] → array of "STATUS|category|message"
# entries where STATUS ∈ {PASS,INFO,WARN,FAIL}
# Use hb_show_compat_report to surface the result and let the user
# decide whether to continue.
# ==========================================================
@@ -2830,6 +2852,32 @@ hb_compat_check() {
HB_COMPAT_ANY_FAIL=0
HB_COMPAT_ANY_WARN=0
HB_COMPAT_CROSS_VERSION=0
# HB_COMPAT_KERNEL_DIRECTION captures which direction the kernel
# major.minor drift goes:
# same — backup and target on the same kernel major.minor
# (or one side lacks a kernel string in the manifest).
# bk_older — backup kernel is OLDER than target kernel. This is
# the only direction that has been observed to break
# things: restoring older-kernel-era userspace onto a
# newer target can drag in old libzfs siblings, older
# systemd unit overrides, and DKMS modules built
# against a kernel that isn't the one now running.
# The restore flow uses this to skip the kernel-tied
# paths (grub, /etc/systemd/system, initramfs config,
# etc.) so Full mode still runs but only over the
# safe subset, and Custom mode grays out the unsafe
# paths so the operator can't shoot themself in the
# foot picking them.
# bk_newer — backup kernel is NEWER than target kernel. Empirical
# testing (multiple 9.2 → 9.1 restores with GPU
# passthrough / IOMMU) shows this direction works
# fine as-is: Proxmox repos don't ship future package
# versions on old series, so APT silently skips the
# backup's kernel-tied packages, and modules compile
# against whatever kernel the target is running. No
# safe-mode restrictions apply here; the restore runs
# as though it were same-version.
HB_COMPAT_KERNEL_DIRECTION="same"
local meta="$staging_root/metadata"
local rootfs="$staging_root/rootfs"
@@ -2898,10 +2946,28 @@ hb_compat_check() {
if [[ "$bk_kmaj" == "$cur_kmaj" ]]; then
HB_COMPAT_RESULTS+=("PASS|Kernel|$(hb_translate "Same major.minor:") $bk_kernel$cur_kernel")
else
# Kernel major.minor drift — same reasoning as the
# PVE case above. Safe filter handles it.
HB_COMPAT_RESULTS+=("INFO|Kernel|$(hb_translate "Different kernel major.minor:") $bk_kernel$cur_kernel $(hb_translate "— safe restore mode will skip kernel-tied config")")
HB_COMPAT_CROSS_VERSION=1
# Kernel major.minor drift — decide direction so the
# rest of the restore knows whether to switch on the
# safe-subset mode. Bash `[[ ... < ... ]]` is a string
# compare, so we split into integers explicitly.
local _bk_maj _bk_min _cur_maj _cur_min
_bk_maj=${bk_kmaj%%.*}
_bk_min=${bk_kmaj##*.}
_cur_maj=${cur_kmaj%%.*}
_cur_min=${cur_kmaj##*.}
if (( _bk_maj < _cur_maj )) \
|| (( _bk_maj == _cur_maj && _bk_min < _cur_min )); then
HB_COMPAT_KERNEL_DIRECTION="bk_older"
HB_COMPAT_RESULTS+=("INFO|Kernel|$(hb_translate "Backup on older kernel:") $bk_kernel$cur_kernel $(hb_translate "— Full/Custom restore will skip kernel-tied paths")")
HB_COMPAT_CROSS_VERSION=1
else
# Backup NEWER than target — empirical evidence
# (multiple GPU passthrough tests) shows this
# direction restores cleanly with no filtering.
HB_COMPAT_KERNEL_DIRECTION="bk_newer"
HB_COMPAT_RESULTS+=("INFO|Kernel|$(hb_translate "Backup on newer kernel:") $bk_kernel$cur_kernel $(hb_translate "— restore proceeds as same-version (verified safe)")")
HB_COMPAT_CROSS_VERSION=1
fi
fi
fi
fi

View File

@@ -1,93 +0,0 @@
#!/usr/bin/env bash
# ==========================================================
# kernel_pin_plan.sh — JSON reporter for cross-kernel restore
# ==========================================================
# Usage: bash kernel_pin_plan.sh <staging_root>
# Output: JSON on stdout — one of:
#
# {"detected":false}
# Backup + target run the same kernel major.minor.
# No action needed.
#
# {"detected":true,
# "backup_kernel":"6.17.2-1-pve",
# "target_kernel":"7.0.12-1-pve",
# "action":"installed",
# "pkg":"proxmox-kernel-6.17.2-1-pve-signed"}
# Cross-kernel. The backup's kernel is already installed on the
# target; the restore flow will pin it.
#
# {"detected":true, ...,
# "action":"installable",
# "pkg":"proxmox-kernel-6.17.2-1-pve-signed"}
# Cross-kernel. The kernel is available in Proxmox repos and
# will be installed before the pin.
#
# {"detected":true, ...,
# "action":"unavailable",
# "reason":"not installed on this host and not available in the
# configured Proxmox repositories"}
# Cross-kernel. The kernel is neither installed nor obtainable.
# The restore flow must refuse.
#
# The heavy lifting is delegated to hb_kernel_pin_plan in
# lib_host_backup_common.sh, so the CLI menu and the Web Monitor
# agree byte-for-byte on which restores are safe to start.
# ==========================================================
set -euo pipefail
staging_root="${1:-}"
[[ -z "$staging_root" || ! -d "$staging_root" ]] && {
printf '{"detected":false,"error":"staging_root missing"}\n'
exit 0
}
LIB="/usr/local/share/proxmenux/scripts/backup_restore/lib_host_backup_common.sh"
if [[ ! -f "$LIB" ]]; then
printf '{"detected":false,"error":"lib_host_backup_common.sh not found"}\n'
exit 0
fi
# shellcheck source=/dev/null
source "$LIB"
# Read the backup's kernel release.
bk_kernel=""
if [[ -f "$staging_root/metadata/run_info.env" ]]; then
bk_kernel=$(grep -m1 '^kernel=' "$staging_root/metadata/run_info.env" 2>/dev/null \
| cut -d= -f2-)
fi
cur_kernel=$(uname -r 2>/dev/null || echo "")
if [[ -z "$bk_kernel" || -z "$cur_kernel" ]]; then
printf '{"detected":false}\n'
exit 0
fi
# Compare major.minor — the same rule hb_compat_check uses.
bk_mm=$(echo "$bk_kernel" | cut -d. -f1-2)
cur_mm=$(echo "$cur_kernel" | cut -d. -f1-2)
if [[ "$bk_mm" == "$cur_mm" ]]; then
printf '{"detected":false}\n'
exit 0
fi
# Cross-kernel: compute the pin plan.
hb_kernel_pin_plan "$bk_kernel"
# Emit JSON. jq if we have it (safer with special chars), else printf.
if command -v jq >/dev/null 2>&1; then
jq -cn \
--arg bkk "$bk_kernel" \
--arg trk "$cur_kernel" \
--arg act "${HB_KERNEL_PIN_ACTION:-unavailable}" \
--arg pkg "${HB_KERNEL_PIN_PKG:-}" \
--arg rsn "${HB_KERNEL_PIN_REASON:-}" \
'{detected:true, backup_kernel:$bkk, target_kernel:$trk,
action:$act, pkg:$pkg, reason:$rsn}'
else
printf '{"detected":true,"backup_kernel":"%s","target_kernel":"%s","action":"%s","pkg":"%s","reason":"%s"}\n' \
"$bk_kernel" "$cur_kernel" \
"${HB_KERNEL_PIN_ACTION:-unavailable}" \
"${HB_KERNEL_PIN_PKG:-}" \
"${HB_KERNEL_PIN_REASON:-}"
fi