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#!/bin/sh
#
# Generate a CRUSH location for the given entity
#
# The CRUSH location consists of a list of key=value pairs, separated
# by spaces, all on a single line. This describes where in CRUSH
# hierarhcy this entity should be placed.
#
# Arguments:
# --cluster <clustername> name of the cluster (see /etc/ceph/$cluster.conf)
# --type <osd|mds|client> daemon/entity type
# --id <id> id (osd number, mds name, client name)
#
# if we start up as ./ceph-crush-location, assume everything else is
# in the current directory too.
if [ `dirname $0` = "." ] && [ $PWD != "/usr/bin" ]; then
BINDIR=.
SBINDIR=.
LIBDIR=.
ETCDIR=.
else
BINDIR=@bindir@
SBINDIR=@prefix@/sbin
LIBDIR=@libdir@/ceph
ETCDIR=@sysconfdir@/ceph
fi
usage_exit() {
echo "usage: $0 [--cluster <cluster>] --id <id> --type <osd|mds|client>"
exit
}
cluster="ceph"
type=""
id=""
while [ $# -ge 1 ]; do
case $1 in
--cluster | -C)
shift
cluster="$1"
shift
;;
--id | -i)
shift
id="$1"
shift
;;
--type | -t)
shift
type="$1"
shift
;;
*)
echo "unrecognized option '$1'"
usage_exit
;;
esac
done
if [ -z "$type" ]; then
echo "must specify entity type"
usage_exit
fi
if [ -z "$id" ]; then
echo "must specify id"
usage_exit
fi
# try a generic location
location="$($BINDIR/ceph-conf --cluster=${cluster:-ceph} --name=$type.$id --lookup crush_location || :)"
if [ -n "$location" ]; then
echo $location
exit 0
fi
# spit out something generic
echo "host=$(hostname -s) root=default"
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