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slowdisk fit check: 90d growth headroom (statics grow; /slowdisk is often the root partition)

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Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
rob
2026-07-09 07:22:13 +00:00
parent a0b47b3631
commit b54bfa84ef
1 changed files with 8 additions and 4 deletions
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12
restore-volumes.sh
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@@ -113,16 +113,20 @@ prep_static_offload() {
# When the statics do NOT fit, FAIL LOUDLY instead of silently extracting everything
# onto the primary disk: a silent NVMe fallback violates the caller's capacity math
# (operator directive 2026-07-09). --no-slowdisk is the conscious override.
local need_gb free_gb floor_gb
local need_gb free_gb floor_gb growth_pct
floor_gb="${SLOWDISK_FLOOR_GB:-150}"
# Static files GROW (reth appends segments as the chain advances, ~5%/mo), and /slowdisk
# is usually the SATA root partition — filling it starves the OS/logs. Each offload must
# bring its own 90d growth headroom on top of the floor (operator directive 2026-07-09).
growth_pct="${SLOWDISK_GROWTH_PCT:-15}"
free_gb=$(slowdisk_free_gb || echo "")
need_gb=$(awk 'NR>3 && NF>=2 {
need_gb=$(awk -v g="$growth_pct" 'NR>3 && NF>=2 {
s=$1; mult=1
if (s ~ /TB$/) mult=1024; else if (s ~ /MB$/) mult=1/1024; else if (s ~ /KB$/) mult=1/1048576
gsub(/[A-Za-z]/, "", s); total+=s*mult
} END {printf "%d", total*1.05 + 1}' "$meta")
} END {printf "%d", total*1.05*(1+g/100) + 1}' "$meta")
if [[ "$free_gb" =~ ^[0-9]+$ && "$need_gb" =~ ^[0-9]+$ ]] && (( free_gb - need_gb < floor_gb )); then
echo "ERROR: static offload does not fit on /slowdisk (need ~${need_gb}G static files, free ${free_gb}G, floor ${floor_gb}G)." >&2
echo "ERROR: static offload does not fit on /slowdisk (need ~${need_gb}G incl. ${growth_pct}% growth headroom, free ${free_gb}G, floor ${floor_gb}G)." >&2
echo " This restore can only fit with --no-slowdisk (extracts everything onto the" >&2
echo " primary disk — NVMe capacity accounting will differ from the offload plan)." >&2
exit 1