orphaned_volumes.sh: initial commit

orphaned_volumes.sh is a script that gets a list of all volumes and
their owner (as reported by cinder) and compares it to a list of all
tenants (as reported by keystone).  If any volume has an owner who does
not exist in keystone, it is returned in the output.  Orphaned cinder
volumes can occur when a tenant is deleted but still had volumes
provisioned.

Change-Id: I3e20826be54595b4a9a35aaac95be881ce658fa0

cinder/orphaned_volumes.sh

@@ -0,0 +1,46 @@
+#!/bin/bash
+
+# OpenStack credentialss are expected to be in your environment variables
+if [ -z "$OS_AUTH_URL" -o -z "$OS_PASSWORD" -o -z "$OS_USERNAME" ]; then
+	echo "Please set OpenStack auth environment variables."
+	exit 1
+fi
+
+# temp files for caching outputs
+volume_ids=$(mktemp)
+cinder_reported_tenants=$(mktemp)
+keystone_tenants=$(mktemp)
+final_report=$(mktemp)
+
+# get a list of all cinder volumes and their owner
+echo -en "Retrieving list of all volumes...\r"
+# oh cinder...
+for volume in `cinder list --all-tenants | tail -n +4 | awk '{print $2}'`; do
+	for line in `cinder show $volume | grep 'os-vol-tenant-attr:tenant_id\| id ' | awk '{print $4}'`; do
+	    echo -en " $line" >> $volume_ids
+        done
+	echo "" >> $volume_ids
+done 
+awk '{print $2}' < $volume_ids | sort -u > $cinder_reported_tenants
+
+# get a list of all tenants, as reported by keystone
+echo -en "Retrieving list of all tenants...\r"
+keystone tenant-list | tail -n +4 | awk '{print $2}' | sort -u > $keystone_tenants
+
+# some rough/poor formatting
+echo "Comparing outputs to locate orphaned volumes...\r"
+echo "+--------------------------------------+-----------------------------------+----------------------------+--------------+------+--------+"
+echo "|             volume_id                |            tenant_id              |        created_at          | display_name | size | status |"
+echo "+--------------------------------------+-----------------------------------+----------------------------+--------------+------+--------+"
+for tenant_id in `comm --nocheck-order -13 $keystone_tenants $cinder_reported_tenants`; do
+	for volume_id in `grep $tenant_id $volume_ids | awk '{print $1}'`; do
+		echo -en "| $volume_id | $tenant_id |"
+		for attr in `cinder show $volume_id | grep ' status \| size \| display_name \| created_at ' | awk '{print $4}'`; do
+			echo -en " $attr |"
+		done
+		echo ""
+	done
+done
+
+# cleanup after ourself
+rm $keystone_tenants $volume_ids $cinder_reported_tenants $final_report