From 6ebef9ad80ee156285a61d413b5265de9c0aa2ae Mon Sep 17 00:00:00 2001
From: Heming Zhao <heming.zhao@suse.com>
Date: Wed, 21 Apr 2021 11:17:36 +0800
Subject: [PATCH] Add "nolvm" for kernel cmdline

This patch is inspried by multipath patch cd3184e107c8 ("Add
support for "multipath=off" and "nompath" on kernel cmdline")

This new item for disabling lvm2 startup from kernel command
line. One of usecases is in rescue mode, disabling lvm2 will
allow user to enable lvm2 devices by manual.

Signed-off-by: Heming Zhao <heming.zhao@suse.com>

2023-09-07:
The file udev/69-dm-lvm-metad.rules.in has been removed since v2_03_19.
So remove the change of above file. 

Signed-off-by: Glass Su <glass.su@suse.com>

---

diff -Nupr a/scripts/lvm2-pvscan.service.in b/scripts/lvm2-pvscan.service.in
--- a/scripts/lvm2-pvscan.service.in	2022-09-02 14:05:03.706825230 +0800
+++ b/scripts/lvm2-pvscan.service.in	2022-09-02 14:04:09.115063287 +0800
@@ -7,6 +7,7 @@ BindsTo=dev-block-%i.device
 After=multipathd.service
 Before=shutdown.target
 Conflicts=shutdown.target
+ConditionKernelCommandLine=!nolvm
 
 [Service]
 Type=oneshot
diff -Nupr a/udev/69-dm-lvm.rules.in b/udev/69-dm-lvm.rules.in
--- a/udev/69-dm-lvm.rules.in	2022-09-02 14:04:51.074880312 +0800
+++ b/udev/69-dm-lvm.rules.in	2022-09-02 14:07:19.978230990 +0800
@@ -10,6 +10,9 @@ (LVM_EXEC_RULE)
 
 ENV{DM_UDEV_DISABLE_OTHER_RULES_FLAG}=="1", GOTO="lvm_end"
 
+IMPORT{cmdline}="nolvm"
+ENV{nolvm}=="?*", GOTO="lvm_end"
+
 # Ignore PVs on LVs.
 # This is usually a case of an LV being used for a guest VM
 # image, where the guest is using lvm.  The host should
 # ignore lvm data from the guest and not attempt to scan or