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#!/usr/bin/bash
# Copyright Amazon.com, Inc. and its affiliates. All Rights Reserved.
#
# Licensed under the MIT License. See the LICENSE accompanying this file
# for the specific language governing permissions and limitations under
# the License.
# Expected input is partition's kernel name like nvme0n1p2 or nvme0n1, output would be 1
if [[ $# -ne 1 ]]; then
exit 1
else
kernel_name=$1
# Remove nvme prefix (also deals with any /dev that might accidentally get passed in)
prefix_removed=${kernel_name#*nvme*n}
# Remove partition suffix
NSID=${prefix_removed%p*}
echo "_NS_ID=${NSID}"
fi