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From 603f33e28cfad45c4bf9ade8e3ff3b9014b5bd4d Mon Sep 17 00:00:00 2001
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From: Ben Howard <ben.howard@redhat.com>
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Date: Fri, 3 Apr 2020 13:32:44 -0600
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Subject: [PATCH] multipath: add automatic configuration for multipath
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Add support for 'rd.multipath=default' for using the default
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configuration on boot. The intended purpose for this is to help support
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ostree-based image boots from multipathed devices (such as Fedora and
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Red Hat CoreOS).
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(cherry picked from commit b8a92b715677d52dbc2b27a710b9816fd8b9a63b)
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Resolves: #1888779
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---
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dracut.cmdline.7.asc | 3 +++
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modules.d/90multipath/module-setup.sh | 7 +++++--
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modules.d/90multipath/multipathd-configure.service | 19 +++++++++++++++++++
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modules.d/90multipath/multipathd.sh | 5 +++++
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4 files changed, 32 insertions(+), 2 deletions(-)
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diff --git a/dracut.cmdline.7.asc b/dracut.cmdline.7.asc
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index 4a7c2517..19b5cc87 100644
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--- a/dracut.cmdline.7.asc
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+++ b/dracut.cmdline.7.asc
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@@ -406,6 +406,9 @@ MULTIPATH
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**rd.multipath=0**::
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disable multipath detection
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+**rd.multipath=default**::
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+ use default multipath settings
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+
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FIPS
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~~~~
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**rd.fips**::
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diff --git a/modules.d/90multipath/module-setup.sh b/modules.d/90multipath/module-setup.sh
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index 8a032c86..a7f250f3 100755
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--- a/modules.d/90multipath/module-setup.sh
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+++ b/modules.d/90multipath/module-setup.sh
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@@ -83,11 +83,12 @@ install() {
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dmsetup \
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kpartx \
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mpath_wait \
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+ mpathconf \
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+ mpathpersist \
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multipath \
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multipathd \
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- mpathpersist \
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- xdrgetuid \
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xdrgetprio \
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+ xdrgetuid \
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/etc/xdrdevices.conf \
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/etc/multipath.conf \
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/etc/multipath/* \
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@@ -109,7 +110,9 @@ install() {
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fi
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if dracut_module_included "systemd"; then
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+ inst_simple "${moddir}/multipathd-configure.service" "${systemdsystemunitdir}/multipathd-configure.service"
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inst_simple "${moddir}/multipathd.service" "${systemdsystemunitdir}/multipathd.service"
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+ systemctl -q --root "$initdir" enable multipathd-configure.service
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systemctl -q --root "$initdir" enable multipathd.service
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else
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inst_hook pre-trigger 02 "$moddir/multipathd.sh"
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diff --git a/modules.d/90multipath/multipathd-configure.service b/modules.d/90multipath/multipathd-configure.service
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new file mode 100644
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index 00000000..de690615
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--- /dev/null
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+++ b/modules.d/90multipath/multipathd-configure.service
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@@ -0,0 +1,19 @@
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+[Unit]
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+Description=Device-Mapper Multipath Default Configuration
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+Before=iscsi.service iscsid.service lvm2-activation-early.service
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+Wants=systemd-udev-trigger.service systemd-udev-settle.service local-fs-pre.target
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+After=systemd-udev-trigger.service systemd-udev-settle.service
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+Before=local-fs-pre.target multipathd.service
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+DefaultDependencies=no
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+Conflicts=shutdown.target
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+
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+ConditionKernelCommandLine=rd.multipath=default
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+ConditionPathExists=!/etc/multipath.conf
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+
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+[Service]
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+Type=oneshot
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+ExecStartPre=-/usr/bin/mkdir -p /etc/multipath/multipath.conf.d
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+ExecStart=/usr/sbin/mpathconf --enable
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+
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+[Install]
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+WantedBy=sysinit.target
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diff --git a/modules.d/90multipath/multipathd.sh b/modules.d/90multipath/multipathd.sh
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index 2c2dcc85..936c5dc7 100755
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--- a/modules.d/90multipath/multipathd.sh
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+++ b/modules.d/90multipath/multipathd.sh
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@@ -1,5 +1,10 @@
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#!/bin/sh
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+if [ "$(getarg rd.multipath)x" == "default" ] && [ ! -e /etc/multipath.conf ]; then
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+ mkdir -p /etc/multipath/multipath.conf.d
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+ mpathconf --enable
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+fi
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+
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if getargbool 1 rd.multipath -d -n rd_NO_MULTIPATH && [ -e /etc/multipath.conf ]; then
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modprobe dm-multipath
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multipathd -B || multipathd
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