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#!/usr/bin/env bash
set -e
rootdir=$(readlink -f $(dirname $0))/..
function usage() {
echo "Usage: [-j] $0 -n BDEV_NAME -d BASE_BDEV [-u UUID] [-c CACHE]"
echo "UUID is required when restoring device state"
echo
echo "BDEV_NAME - name of the bdev"
echo "BASE_BDEV - name of the bdev to be used as underlying device"
echo "UUID - bdev's uuid (used when in restore mode)"
echo "CACHE - name of the bdev to be used as write buffer cache"
}
function create_json_config() {
echo "{"
echo '"subsystem": "bdev",'
echo '"config": ['
echo '{'
echo '"method": "bdev_ftl_create",'
echo '"params": {'
echo "\"name\": \"$1\","
echo "\"base_bdev\": \"$2\","
if [ -n "$4" ]; then
echo "\"uuid\": \"$3\","
echo "\"cache\": \"$4\""
else
echo "\"uuid\": \"$3\""
fi
echo '}'
echo '}'
echo ']'
echo '}'
}
uuid=00000000-0000-0000-0000-000000000000
while getopts ":c:d:hn:u:" arg; do
case "$arg" in
n) name=$OPTARG ;;
d) base_bdev=$OPTARG ;;
u) uuid=$OPTARG ;;
c) cache=$OPTARG ;;
h)
usage
exit 0
;;
*)
usage
exit 1
;;
esac
done
if [[ -z "$name" || -z "$base_bdev" ]]; then
usage
exit 1
fi
create_json_config $name $base_bdev $uuid $cache
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