5867f4da7c
It is possible to use ledctl utility to control the state of LEDs in systems supporting NPEM, even when the NVMe devices are controlled by SPDK. However, in this case it is necessary to determine the slot device number because the block device is unavailable. This script takes care of that, based on nvme bdev name, and invokes ledctl with correct parameters. Change-Id: Ib92cd5ca27b8353a62917eed06e1b6ddf119cf49 Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com> Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/16811 Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com> Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com> Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
80 lines
2.0 KiB
Bash
Executable File
80 lines
2.0 KiB
Bash
Executable File
#!/usr/bin/env bash
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# SPDX-License-Identifier: BSD-3-Clause
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# Copyright (C) 2023 Intel Corporation
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# All rights reserved.
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usage() {
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echo "Control LED on an NVMe bdev with NPEM capability."
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echo "Usage: $(basename $0) [BDEV_NAME] [LED_STATE]"
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echo ""
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echo "BDEV_NAME: The name of the SPDK NVMe bdev."
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echo "LED_STATE: The desired state of the LED. If omitted, the current state will be shown."
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echo " Consult ledctl documentation for a list of supported states."
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}
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if [[ "$#" -lt 1 || "$#" -gt 2 ]]; then
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usage
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exit 1
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fi
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if ! command -v "ledctl" > /dev/null 2>&1; then
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echo "ERROR: ledctl is not found." >&2
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exit 1
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fi
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if ! ledctl --help | grep -q -- "--set-slot"; then
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echo "ERROR: The installed version of ledctl does not support the --set-slot command." >&2
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exit 1
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fi
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scriptdir=$(dirname $0)
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bdev_name=$1
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led_state=$2
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# Find the PCI address of the nvme bdev
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if ! bdev_info=$($scriptdir/rpc.py bdev_get_bdevs -b $bdev_name | jq -r '.[0]' 2> /dev/null); then
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echo "ERROR: bdev $bdev_name not found." >&2
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exit 1
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fi
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nvme_info=$(echo $bdev_info | jq -r '.driver_specific["nvme"] | select(.)')
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if [ -z "$nvme_info" ]; then
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echo "ERROR: $bdev_name is not an nvme bdev." >&2
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exit 1
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fi
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nvme_pci_addr=$(echo $nvme_info | jq -r '.[0].pci_address | select(.)')
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if [ -z "$nvme_pci_addr" ]; then
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echo "ERROR: $bdev_name pci address unknown." >&2
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exit 1
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fi
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# Get a list of slots recognized by ledctl
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npem_slots=$(ledctl -P -c NPEM 2> /dev/null | awk '{print $2}')
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# Get the slot that the nvme device is attached to
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devpath=$(realpath --relative-to=/sys/devices /sys/bus/pci/devices/$nvme_pci_addr)
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while [ "$devpath" != "." ]; do
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dev=$(basename $devpath)
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if echo $npem_slots | grep -wq $dev; then
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slot=$dev
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break
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fi
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devpath=$(dirname $devpath)
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done
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if [ -z "$slot" ]; then
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echo "ERROR: $bdev_name not recognized by ledctl as NPEM-capable." >&2
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exit 1
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fi
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# Pass the slot to ledctl
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if [ -z "$led_state" ]; then
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ledctl -G -c NPEM -p $slot
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else
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ledctl -S -c NPEM -p $slot -s $led_state
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fi
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