28 lines
692 B
Bash
28 lines
692 B
Bash
#!/bin/bash
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LC_ALL=C
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if [ -e "/proc/device-tree/ibm,partition-uuid" ] ; then
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UUID=$(tr -d '\0' < /proc/device-tree/ibm,partition-uuid)
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else
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UUID=$(dmidecode -s system-uuid | tr -d '[:space:]')
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fi
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if [ -z "$UUID" ] ; then
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>&2 echo "No UUID found, can't determine hostnqn."
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exit 1
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fi
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# convert UUID to lower-case only:
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UUID=$(echo $UUID | tr '[:upper:]' '[:lower:]')
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# check UUID format, e.g.: 4c4c4544-0156-4a10-8134-b7d04f383232, so: 8-4-4-4-12
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if ! [[ $UUID =~ ^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$ ]] ; then
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>&2 echo "UUID has invalid format."
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>&2 echo "Invalid UUID: ${UUID}"
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exit 2
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fi
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HOSTNQN="nqn.2014-08.org.nvmexpress:uuid:${UUID}"
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echo $HOSTNQN
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