File 0080-95dasd_rules-print-out-rd.dasd-commandline.patch of Package dracut.12460
From 3e2e526a74cdad48d40a1ec58dac9f709d8fef0e Mon Sep 17 00:00:00 2001
From: Hannes Reinecke <hare@suse.de>
Date: Thu, 26 Jun 2014 10:50:43 +0200
Subject: 95dasd_rules: print out 'rd.dasd' commandline
When a DASD is found to be required for the rootfs we should
be printing out a 'rd.dasd' commandline parameter. This not
only enables us to correctly enable the device with cio_ignore,
we can also inspect the resulting initrd to figure out which
devices are required to mount the rootfs.
Signed-off-by: Hannes Reinecke <hare@suse.de>
---
modules.d/95dasd_rules/module-setup.sh | 33 +++++++++++++++++++++++++++++++++
1 file changed, 33 insertions(+)
Index: dracut-042/modules.d/95dasd_rules/module-setup.sh
===================================================================
--- dracut-042.orig/modules.d/95dasd_rules/module-setup.sh 2015-06-24 18:02:06.297197575 +0200
+++ dracut-042/modules.d/95dasd_rules/module-setup.sh 2015-06-24 18:02:10.881458552 +0200
@@ -1,10 +1,39 @@
#!/bin/bash
# called by dracut
+cmdline() {
+ is_dasd() {
+ local _dev=$1
+ local _devpath=$(cd -P /sys/dev/block/$_dev ; echo $PWD)
+
+ [ "${_devpath#*/dasd}" == "$_devpath" ] && return 1
+ _ccw="${_devpath%%/block/*}"
+ echo "rd.dasd=${_ccw##*/}"
+ return 0
+ }
+ [[ $hostonly ]] || [[ $mount_needs ]] && {
+ for_each_host_dev_and_slaves is_dasd || return 255
+ }
+}
+
+# called by dracut
check() {
local _arch=$(uname -m)
+ local found=0
+ local bdev
[ "$_arch" = "s390" -o "$_arch" = "s390x" ] || return 1
require_binaries /usr/lib/udev/collect || return 1
+
+ [[ $hostonly ]] || [[ $mount_needs ]] && {
+ for bdev in /sys/block/* ; do
+ case "${bdev##*/}" in
+ dasd*)
+ found=$(($found+1));
+ break;
+ esac
+ done
+ [ $found -eq 0 ] && return 255
+ }
return 0
}
@@ -17,6 +46,10 @@ depends() {
# called by dracut
install() {
inst_hook cmdline 30 "$moddir/parse-dasd.sh"
+ if [[ $hostonly_cmdline == "yes" ]] ; then
+ local _dasd=$(cmdline)
+ [[ $_dasd ]] && printf "%s\n" "$_dasd" >> "${initdir}/etc/cmdline.d/95dasd.conf"
+ fi
if [[ $hostonly ]] ; then
inst_rules_wildcard 51-dasd-*.rules
inst_rules_wildcard 41-s390x-dasd-*.rules