File 0161-95zfcp_rules-simplified-rd.zfcp-commandline-for-NPIV.patch of Package dracut.12460
From 61d345654fbdd895a406a5a7517f01a7c984a7ed Mon Sep 17 00:00:00 2001
From: Hannes Reinecke <hare@suse.de>
Date: Thu, 10 Mar 2016 15:45:43 +0100
Subject: [PATCH] 95zfcp_rules: simplified rd.zfcp commandline for NPIV
When NPIV is enabled and the allow_lun_scan parameter is set to 'Y'
the HBA will initiate a LUN scan automatically, so there is no need
to specify the WWPN and LUN number manually.
References: bsc#964456
Signed-off-by: Hannes Reinecke <hare@suse.com>
---
dracut.cmdline.7.asc | 9 ++++++++-
modules.d/95zfcp_rules/module-setup.sh | 23 +++++++++++++++++++----
modules.d/95zfcp_rules/parse-zfcp.sh | 1 +
3 files changed, 28 insertions(+), 5 deletions(-)
Index: dracut-044/dracut.cmdline.7.asc
===================================================================
--- dracut-044.orig/dracut.cmdline.7.asc 2016-04-12 15:48:42.072804543 +0200
+++ dracut-044/dracut.cmdline.7.asc 2016-04-12 15:48:46.869076048 +0200
@@ -771,12 +771,19 @@ DASD
ZFCP
~~~~
**rd.zfcp=**__<zfcp adaptor device bus ID>__,__<WWPN>__,__<FCPLUN>__::
- rd.zfcp can be specified multiple times on the kernel command line.
+ rd.zfcp can be specified multiple times on the kernel command
+ line.
+
+**rd.zfcp=**__<zfcp adaptor device bus ID>__::
+ If NPIV is enabled and the 'allow_lun_scan' parameter to the zfcp
+ module is set to 'Y' then the zfcp adaptor will be initiating a
+ scan internally and the <WWPN> and <FCPLUN> parameters can be omitted.
+
[listing]
.Example
--
rd.zfcp=0.0.4000,0x5005076300C213e9,0x5022000000000000
+rd.zfcp=0.0.4000
--
**rd.zfcp.conf=0**::
Index: dracut-044/modules.d/95zfcp_rules/module-setup.sh
===================================================================
--- dracut-044.orig/modules.d/95zfcp_rules/module-setup.sh 2016-04-12 15:48:42.072804543 +0200
+++ dracut-044/modules.d/95zfcp_rules/module-setup.sh 2016-04-12 15:48:46.869076048 +0200
@@ -5,15 +5,30 @@ cmdline() {
is_zfcp() {
local _dev=$1
local _devpath=$(cd -P /sys/dev/block/$_dev ; echo $PWD)
- local _sdev _lun _wwpn _ccw
+ local _sdev _scsiid _hostno _lun _wwpn _ccw _port_type
+ local _allow_lun_scan _is_npiv
+ _allow_lun_scan=$(cat /sys/module/zfcp/parameters/allow_lun_scan)
[ "${_devpath#*/sd}" == "$_devpath" ] && return 1
_sdev="${_devpath%%/block/*}"
[ -e ${_sdev}/fcp_lun ] || return 1
- _lun=$(cat ${_sdev}/fcp_lun)
- _wwpn=$(cat ${_sdev}/wwpn)
+ _scsiid="${_sdev##*/}"
+ _hostno="${_scsiid%%:*}"
+ [ -d /sys/class/fc_host/host${_hostno} ] || return 1
+ _port_type=$(cat /sys/class/fc_host/host${_hostno}/port_type)
+ case "$_port_type" in
+ NPIV*)
+ _is_npiv=1
+ ;;
+ esac
_ccw=$(cat ${_sdev}/hba_id)
- echo "rd.zfcp=${_ccw},${_wwpn},${_lun}"
+ if [ "$_is_npiv" ] && [ "$_allow_lun_scan" = "Y" ] ; then
+ echo "rd.zfcp=${_ccw}"
+ else
+ _lun=$(cat ${_sdev}/fcp_lun)
+ _wwpn=$(cat ${_sdev}/wwpn)
+ echo "rd.zfcp=${_ccw},${_wwpn},${_lun}"
+ fi
return 0
}
[[ $hostonly ]] || [[ $mount_needs ]] && {
Index: dracut-044/modules.d/95zfcp_rules/parse-zfcp.sh
===================================================================
--- dracut-044.orig/modules.d/95zfcp_rules/parse-zfcp.sh 2016-04-12 15:48:42.072804543 +0200
+++ dracut-044/modules.d/95zfcp_rules/parse-zfcp.sh 2016-04-12 15:48:46.869076048 +0200
@@ -31,6 +31,7 @@ ACTION=="add", SUBSYSTEM=="drivers", KER
ACTION=="add", ENV{COLLECT_$ccw}=="0", ATTR{[ccw/$ccw]online}="1"
EOF
fi
+ [ -z "$wwpn" -o -z "$lun" ] && return
m=$(sed -n "/.*${wwpn}.*${lun}.*/p" $_rule)
if [ -z "$m" ] ; then
cat >> $_rule <<EOF