Merge pull request #24 from outis1one/claude/bios-vt-power-settings-mxjh0x
Claude/bios vt power settings mxjh0x
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Outis
@@ -2236,14 +2236,26 @@ Click **Next**.
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> **Why 12 cores / 1 socket?** The E5-2660 v4 has 14 cores per socket (28
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> total across both CPUs). Keeping Sockets at 1 pins the VM to a single NUMA
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> node — all memory accesses stay local to that socket's RAM channels, avoiding
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> the ~30–40ns penalty of crossing to the other socket. Give VM 100 12 cores
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> from socket 0, VM 101 gets 6 cores from socket 1.
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> the ~30–40ns penalty of crossing to the other socket. VM 100 gets socket 0
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> (CPU 1), VM 101 gets socket 1 (CPU 2).
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>
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> **Enable NUMA** tells Proxmox to allocate RAM from the same socket the vCPUs
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> are pinned to. Without it the RAM may come from the wrong socket even if
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> Sockets is set to 1. The checkbox is in **Processors → Edit → Enable NUMA**
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> (not in the Memory dialog).
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>
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> **Pinning VM 100 to socket 0 (CPU 1) on the Proxmox host:**
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> ```bash
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> # Find which CPU IDs belong to socket 0
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> lscpu -e | grep "^[0-9]" | awk '$3==0 {print $1}' | tr '\n' ','
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> # Example output: 0,1,2,...,13,28,29,...,41,
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>
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> # Pin VM 100 to socket 0 cores (replace the CPU list with your actual output above, no trailing comma)
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> echo "cpuset: 0-13,28-41" >> /etc/pve/qemu-server/100.conf
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> ```
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> After adding `cpuset`, restart the VM. Proxmox will then schedule all vCPUs
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> only on those physical cores, keeping memory traffic on socket 0's RAM channels.
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>
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> **nested-virt flag** — you will see this in Extra CPU Flags. Leave it at
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> Default; it is automatically enabled when CPU type is `host` on Intel, which
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> is what allows VirtualBox/WinApps to run inside this VM.
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@@ -2616,8 +2628,19 @@ Click **Create VM** in the web UI.
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| Type | host |
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| Enable NUMA | checked |
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> 6 cores from socket 1 (VM 100 uses socket 0). NUMA keeps memory local to
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> the cores doing the work.
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> 6 cores from socket 1 (CPU 2) — VM 100 uses socket 0 (CPU 1). NUMA keeps
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> memory local to the cores doing the work.
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>
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> **Pin VM 101 to socket 1 (CPU 2) on the Proxmox host:**
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> ```bash
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> # Find which CPU IDs belong to socket 1
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> lscpu -e | grep "^[0-9]" | awk '$3==1 {print $1}' | tr '\n' ','
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> # Example output: 14,15,...,27,42,43,...,55,
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>
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> # Pin VM 101 to socket 1 cores (replace list with your actual output, no trailing comma)
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> echo "cpuset: 14-27,42-55" >> /etc/pve/qemu-server/101.conf
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> ```
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> After adding `cpuset`, restart VM 101.
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**Tab: Memory**
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@@ -0,0 +1,143 @@
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#!/usr/bin/env bash
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# Generate qm set commands to attach data drives to a Proxmox VM.
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# Run on the Proxmox host. Skips the OS drive (sda) and any drives
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# already attached to any VM.
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#
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# Usage:
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# ./attach-drives.sh # preview commands (dry run)
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# ./attach-drives.sh --apply # actually run the commands
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# ./attach-drives.sh --vm 100 # target a specific VM (default: 100)
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#
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# Example:
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# ./attach-drives.sh --vm 100 --apply
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set -euo pipefail
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VM_ID=100
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APPLY=false
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while [[ $# -gt 0 ]]; do
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case "$1" in
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--vm) VM_ID="$2"; shift 2 ;;
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--apply) APPLY=true; shift ;;
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*) echo "Usage: $0 [--vm <id>] [--apply]"; exit 1 ;;
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esac
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done
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# ── Find drives already attached to any VM ────────────────────────────────────
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attached_ids=()
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for conf in /etc/pve/qemu-server/*.conf; do
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while IFS= read -r line; do
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if [[ "$line" =~ /dev/disk/by-id/([^,]+) ]]; then
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attached_ids+=("${BASH_REMATCH[1]}")
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fi
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done < "$conf"
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done
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is_attached() {
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local id="$1"
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for a in "${attached_ids[@]:-}"; do
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[[ "$a" == "$id" ]] && return 0
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done
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return 1
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}
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# ── Find next free scsi slot for the target VM ────────────────────────────────
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next_slot() {
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local conf="/etc/pve/qemu-server/${VM_ID}.conf"
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local slot=1
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while grep -q "^scsi${slot}:" "$conf" 2>/dev/null; do
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(( slot++ ))
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done
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echo "$slot"
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}
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# ── Inventory all block devices ───────────────────────────────────────────────
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echo "=== Available data drives (not yet attached to any VM) ==="
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echo ""
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printf "%-12s %-10s %-35s %s\n" "DEVICE" "SIZE" "BY-ID PATH" "MODEL"
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printf "%-12s %-10s %-35s %s\n" "------" "----" "----------" "-----"
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candidates=()
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for dev in /dev/sd?; do
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[[ -b "$dev" ]] || continue
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name=$(basename "$dev")
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# Skip OS drive (sda — the PERC RAID array Proxmox is installed on)
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[[ "$name" == "sda" ]] && continue
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# Skip USB devices (small drives < 100G are likely USB sticks)
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size_bytes=$(lsblk -dn -o SIZE -b "$dev" 2>/dev/null || echo 0)
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size_human=$(lsblk -dn -o SIZE "$dev" 2>/dev/null || echo "?")
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if [[ "$size_bytes" -lt 107374182400 ]]; then # < 100 GiB
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printf "%-12s %-10s %-35s %s\n" "$name" "$size_human" "(skipped — looks like USB stick)" ""
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continue
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fi
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model=$(cat "/sys/block/${name}/device/model" 2>/dev/null | xargs || echo "?")
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# Find best by-id (prefer ata- over scsi-)
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byid=""
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for link in /dev/disk/by-id/ata-* /dev/disk/by-id/scsi-3*; do
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[[ -L "$link" ]] || continue
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[[ "$(readlink -f "$link")" == "$dev" ]] || continue
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[[ "$link" =~ -part ]] && continue
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byid=$(basename "$link")
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[[ "$byid" == ata-* ]] && break # prefer ata- if found
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done
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if [[ -z "$byid" ]]; then
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printf "%-12s %-10s %-35s %s\n" "$name" "$size_human" "(no by-id found — skip)" "$model"
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continue
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fi
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if is_attached "$byid"; then
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printf "%-12s %-10s %-35s %s\n" "$name" "$size_human" "${byid} [already attached]" "$model"
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continue
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fi
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printf "%-12s %-10s %-35s %s\n" "$name" "$size_human" "$byid" "$model"
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candidates+=("$byid")
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done
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echo ""
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if [[ ${#candidates[@]} -eq 0 ]]; then
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echo "No unattached data drives found."
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exit 0
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fi
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# ── Generate qm set commands ──────────────────────────────────────────────────
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echo "=== Commands to attach to VM ${VM_ID} ==="
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echo ""
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slot=$(next_slot)
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cmds=()
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for byid in "${candidates[@]}"; do
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cmd="qm set ${VM_ID} --scsi${slot} /dev/disk/by-id/${byid}"
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cmds+=("$cmd")
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echo " $cmd"
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(( slot++ ))
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done
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echo ""
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if $APPLY; then
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echo "--- Applying ---"
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for cmd in "${cmds[@]}"; do
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echo " Running: $cmd"
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eval "$cmd"
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done
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echo ""
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echo "Done. Verify with:"
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echo " grep scsi /etc/pve/qemu-server/${VM_ID}.conf"
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else
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echo "Dry run — no changes made. Re-run with --apply to attach drives."
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echo ""
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echo " ./attach-drives.sh --vm ${VM_ID} --apply"
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fi
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