CX4开启Sriov一键脚本

[fushinn]

CX4一键开启Sriov并且开机自动启动脚本

# —— 直接复制整个下面块并运行 —— 

sudo mkdir -p /opt/enable-sriov

sudo tee /opt/enable-sriov/enable-sriov.sh > /dev/null <<'EOF'
#!/usr/bin/env bash
# /opt/enable-sriov/enable-sriov.sh
# 目的：在 enp7s0f0np0 上启用 8 个 VF 并为 VF 0..7 设置 MAC 00:80:00:00:00:00 .. 00:80:00:00:00:07
set -euo pipefail

# 如需修改接口名，请编辑下方 IFACE 变量或通过 systemd 的 Environment 传入
IFACE="enp7s0f0np0"
NUMVFS=8
SYS="/sys/class/net/${IFACE}/device"
IP_BIN="$(command -v ip || echo /sbin/ip)"
LOG_PREFIX="[enable-sriov ${IFACE}]"

if [ "$(id -u)" -ne 0 ]; then
  echo "${LOG_PREFIX} must be run as root" >&2
  exit 1
fi

if [ ! -d "${SYS}" ]; then
  echo "${LOG_PREFIX} ERROR: sysfs path ${SYS} not found. Is ${IFACE} correct?" >&2
  exit 1
fi

${IP_BIN} link set dev "${IFACE}" up 2>/dev/null || true

current=0
if [ -r "${SYS}/sriov_numvfs" ]; then
  current=$(cat "${SYS}/sriov_numvfs" 2>/dev/null || echo 0)
fi

echo "${LOG_PREFIX} current sriov_numvfs=${current}, target=${NUMVFS}"

if [ "${current}" -ne "${NUMVFS}" ]; then
  set +e
  echo "${NUMVFS}" > "${SYS}/sriov_numvfs" 2>/dev/null
  rc=$?
  set -e
  if [ $rc -ne 0 ]; then
    echo "${LOG_PREFIX} direct write ${NUMVFS} failed, trying reset to 0 then set ${NUMVFS}"
    echo 0 > "${SYS}/sriov_numvfs" || true
    sleep 0.1
    echo "${NUMVFS}" > "${SYS}/sriov_numvfs"
  fi
  sleep 0.2
  new=$(cat "${SYS}/sriov_numvfs" 2>/dev/null || echo 0)
  echo "${LOG_PREFIX} sriov_numvfs now ${new}"
  if [ "${new}" -ne "${NUMVFS}" ]; then
    echo "${LOG_PREFIX} ERROR: failed to set sriov_numvfs to ${NUMVFS}" >&2
    exit 2
  fi
else
  echo "${LOG_PREFIX} sriov already set to ${NUMVFS}, skipping re-provision."
fi

for i in $(seq 0 $((NUMVFS - 1))); do
  last_octet=$(printf "%02x" "${i}")
  mac=$(printf "00:80:00:00:00:%s" "${last_octet}")
  echo "${LOG_PREFIX} set vf ${i} mac ${mac}"
  ${IP_BIN} link set dev "${IFACE}" vf "${i}" mac "${mac}" || {
    echo "${LOG_PREFIX} WARN: failed to set mac for vf ${i}" >&2
  }
  # 可选：取消 spoofchk（若需要允许 VM 使用任意 MAC）
  # ${IP_BIN} link set dev "${IFACE}" vf "${i}" spoofchk off || true
done

echo "${LOG_PREFIX} done"
exit 0
EOF

sudo chmod 755 /opt/enable-sriov/enable-sriov.sh

# 写 systemd unit 到 /etc/systemd/system/enable-sriov.service
sudo tee /etc/systemd/system/enable-sriov.service > /dev/null <<'EOF'
[Unit]
Description=Enable SR-IOV (8 VFs) and configure MACs (generic)
After=network-pre.target
Before=network.target
Wants=network-pre.target

[Service]
Type=oneshot
# 如果想用不同接口，编辑 /opt/enable-sriov/enable-sriov.sh 中的 IFACE，
# 或在这里添加 Environment=IFACE=othername
ExecStart=/opt/enable-sriov/enable-sriov.sh
RemainAfterExit=yes
TimeoutStartSec=30

[Install]
WantedBy=multi-user.target
EOF

# reload, enable and start
sudo systemctl daemon-reload
sudo systemctl enable --now enable-sriov.service

# show recent logs for quick check
sudo journalctl -u enable-sriov.service -n 200 --no-pager

# —— 安装结束 ——