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From 24d329fc97a64ec185ef27e59730f3f058c09029 Mon Sep 17 00:00:00 2001
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From: Xiao Ni <xni@redhat.com>
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Date: Thu, 5 Jan 2023 00:29:20 +0800
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Subject: [PATCH 79/83] mdadm/udev: Don't handle change event on raw devices
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The raw devices are ready when add event happpens and the raid
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can be assembled. So there is no need to handle change events.
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And it can cause some inconvenient problems.
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For example, the OS is installed on md0(/root) and md1(/home).
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md0 and md1 are created on partitions. When it wants to re-install
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OS, anaconda can't clear the storage configure. It deletes one
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partition and does some jobs. The change event happens. Now
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the raid device is assembled again. It can't delete the other
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partitions.
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So in this patch, we don't handle change event on raw devices
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anymore.
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Signed-off-by: Xiao Ni <xni@redhat.com>
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Signed-off-by: Jes Sorensen <jes@trained-monkey.org>
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---
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udev-md-raid-assembly.rules | 8 ++++++++
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1 file changed, 8 insertions(+)
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diff --git a/udev-md-raid-assembly.rules b/udev-md-raid-assembly.rules
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index 39b4344b..d4a7f0a5 100644
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--- a/udev-md-raid-assembly.rules
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+++ b/udev-md-raid-assembly.rules
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@@ -11,6 +11,11 @@ SUBSYSTEM!="block", GOTO="md_inc_end"
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ENV{SYSTEMD_READY}=="0", GOTO="md_inc_end"
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# handle potential components of arrays (the ones supported by md)
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+# For member devices which are md/dm devices, we don't need to
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+# handle add event. Because md/dm devices need to do some init jobs.
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+# Then the change event happens.
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+# When adding md/dm devices, ID_FS_TYPE can only be linux_raid_member
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+# after change event happens.
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ENV{ID_FS_TYPE}=="linux_raid_member", GOTO="md_inc"
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# "noiswmd" on kernel command line stops mdadm from handling
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@@ -28,6 +33,9 @@ GOTO="md_inc_end"
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LABEL="md_inc"
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+# Bare disks are ready when add event happens, the raid can be assembled.
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+ACTION=="change", KERNEL!="dm-*|md*", GOTO="md_inc_end"
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+
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# remember you can limit what gets auto/incrementally assembled by
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# mdadm.conf(5)'s 'AUTO' and selectively whitelist using 'ARRAY'
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ACTION!="remove", IMPORT{program}="BINDIR/mdadm --incremental --export $devnode --offroot $env{DEVLINKS}"
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--
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2.38.1
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