parse_dothill_volumes

#!/usr/bin/awk -f
#

# this script simply takes a line of "show volumes" command
# on a P2000 or DotHill controller and returns configurations for
# multipath.conf to use on hosts in /etc/multipath.conf

# when used with connstorage, take only lines with Health=OK flag (no headers or other lines)
# connstorage $i --log_user -c 'show volumes' | awk '$12 == "OK" {print $2,$11}

# e.g.

#		root@gw2:~/eXact/sbin-repo# echo "vd04  ost04  7993.5GB 00c0ff157c6e0000887f195301000000  write-back    standard         Adaptive         standard     standard N/A                                               600C0FF000157C6E887F195301000000  OK" | parse_volumes
#		# multipath.conf auto generated
#		blacklist {
#		   devnode "^sda[1-9]"
#		   devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
#		   devnode "^hd[a-z]"
#		}
#		defaults {
#		   user_friendly_names    yes
#		}
#		devices {
#		   device {
#		   no_path_retry           2
#		   failback                8
#		   features                "1 queue_if_no_path"
#		   vendor                  "DotHill"
#		   product                 "DH4730"
#		   path_checker            tur
#		   prio                    alua
#		   path_grouping_policy    group_by_prio
#		   getuid_callout          "/lib/udev/scsi_id --whitelisted --device=/dev/%n"
#		   rr_weight               priorities
#		   }
#		}
#		multipaths {
#		   #configuration for volume vd04
#		   multipath {
#			  wwid                    3ost04
#			  alias                   vd04
#		   }
#		}


BEGIN  {
	count=0;
}

{
	volumeName[count] = $1;
	wwn[count] = $2;
	count++;
}

END  {

	print "# multipath.conf auto generated" 
	print "blacklist {"
	print "\tdevnode \"^sda[1-9]\""
	print "\tdevnode \"^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*\""
	print "\tdevnode \"^hd[a-z]\""
	print "}"

   print "defaults {"
        print "\tuser_friendly_names	  yes"
   print "}"


	print "devices {"
		print "\tdevice {"
			print "\tno_path_retry           2"
			print "\tfailback                8"
			print "\tfeatures                \"1 queue_if_no_path\""
			print "\tvendor                  \"DotHill\""
			print "\tproduct                 \"DH4730\""
	      print "\tpath_checker            tur"
			print "\tprio                    alua"
			print "\tpath_grouping_policy    group_by_prio"
         print "\tgetuid_callout          \"/lib/udev/scsi_id --whitelisted --device=/dev/%n\""
			print "\trr_weight               priorities"
		print "\t}"
	print "}"
	print "multipaths {"

	for (i=0;i<count;i++) {
		split(volumeName[i],alias,"_")
		print "\t#configuration for volume " volumeName[i]
		print "\tmultipath {"
		print "\t\twwid                    "3""tolower(wwn[i])
		print "\t\talias                   "volumeName[i]
#                print "\t\tpath_grouping_policy    multibus"
#                print "\t\tpath_selector           \"round-robin 0\""
#                print "\t\tfailback                manual"
#                print "\t\trr_weight               priorities"
#                print "\t\tno_path_retry           5"
#                print "\t\trr_min_io               10"
		print "\t}"
	}

	print "}"
}