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https://git.proxmox.com/git/mirror_zfs.git
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61 lines
1.4 KiB
Plaintext
61 lines
1.4 KiB
Plaintext
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#!/bin/bash
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CONFIG=${CONFIG:-/etc/zfs/zdev.conf}
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PATH_ID=${PATH_ID:-/lib/udev/path_id}
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AWK=${AWK:-/bin/awk}
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die() {
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echo "Error: $*"
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exit 1
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}
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usage() {
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cat << EOF
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Usage: zpool_id [h] [-c configfile] <devpath>
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-c Alternate config file [default /etc/zfs/zdev.conf]
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-d Use path_id from device as the mapping key
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-h Show this message
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EOF
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exit 1
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}
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while getopts 'c:d:h' OPTION; do
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case ${OPTION} in
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c)
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CONFIG=${OPTARG}
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;;
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d)
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DEVICE=${OPTARG}
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;;
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h)
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usage
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;;
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esac
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done
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# Check that a device was requested
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[ -z ${DEVICE} ] && usage
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# Check for the existence of a configuration file
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[ ! -f ${CONFIG} ] && die "Missing config file: ${CONFIG}"
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# Use udev's path_id to generate a unique persistent key
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eval `${PATH_ID} ${DEVICE}`
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[ -z ${ID_PATH} ] && die "Missing ID_PATH for ${DEVICE}"
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# Use the persistent key to lookup the zpool device id in the
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# configuration file which is of the format <device id> <key>.
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# Lines starting with #'s are treated as comments and ignored.
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# Exact matches are required, wild cards are not supported,
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# and only the first match is returned.
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ID_ZPOOL=`${AWK} "/${ID_PATH}\>/ && !/^#/ { print \\$1; exit }" ${CONFIG}`
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[ -z ${ID_ZPOOL} ] && die "Missing ID_ZPOOL for ID_PATH: ${ID_PATH}"
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if [ ${ID_ZPOOL} ]; then
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echo "ID_PATH=${ID_PATH}"
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echo "ID_ZPOOL=${ID_ZPOOL}"
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echo "ID_ZPOOL_PATH=disk/zpool/${ID_ZPOOL}"
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fi
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exit 0
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