[map-osd-to-disktype] added header, checked for bashism, should be posix compatible

map-osd-to-disktype

@@ -1,6 +1,15 @@
-# Assumes, osd is up and 
+#!/bin/sh
 
+# This script will find the locally active osd-s and display their information with the help of Megacli tools.
+# Assumes that you run it on a host which has at least 1 osd that matches hdd or ssd disk device class in ceph osd df tree output.
 #
+# An example for usage:
+# for NUM in 14 2 3 4 6 ; do printf "server$NUM\n" >> /tmp/osd_infos; ssh root@server"$NUM".place6.ungleich.ch "/opt/ungleich-tools/map-osd-to-disktype" >> /tmp/osd_infos ; printf "\n \n" >> /tmp/osd_infos; done
+# 
+# llnu's most hacky/advanced script at the time of writing (2020-05-27)
+
+
+# Future functionality (arguments, and filtering):
 #OSDTYPE=ssd
 
 
@@ -23,6 +32,5 @@ for osd_num in $(cat /tmp/list_osd_mountpoint.out | awk '{print $2}' | cut -c 24
 # Combine and display the outputs
 paste /tmp/local_osds.out /tmp/disk_types.out -d '|'
 
-
 # Cleanup *.out files in the temp dir
 rm /tmp/*.out