44 lines
2.0 KiB
Diff
44 lines
2.0 KiB
Diff
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Martin Wilck <mwilck@suse.com>
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Date: Thu, 2 Apr 2020 18:12:48 +0200
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Subject: [PATCH] kpartx.rules: check for skip_kpartx on synthetic uevents
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The current test to detect "spurious" uevents, and thus whether to
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import DM_SUBSYSTEM_UDEV_FLAG1 (the flag for the "skip_kpartx" option)
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from the udev db is wrong. In 10-dm.rules, DM_UDEV_PRIMARY_SOURCE_FLAG
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is imported from the db if it isn't set, meaning that it's always 1
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for active maps. The only events for which DM_SUBSYSTEM_UDEV_FLAG1
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must not be loaded from the db are the real "primary" events, which
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are "change" events with DM_ACTIVATION=="1".
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11-dm-mpath.rules resets DM_ACTIVATION to 0 if nothing should change in upper
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layers. In this case importing DM_SUBSYSTEM_UDEV_FLAG1 is correct, too. kpartx
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will not be called anyway, because 11-dm-mpath.rules also sets MPATH_UNCHANGED=1.
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Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
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---
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kpartx/kpartx.rules | 7 +++++--
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1 file changed, 5 insertions(+), 2 deletions(-)
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diff --git a/kpartx/kpartx.rules b/kpartx/kpartx.rules
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index f1bf31ca..d7527d7d 100644
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--- a/kpartx/kpartx.rules
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+++ b/kpartx/kpartx.rules
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@@ -13,8 +13,11 @@ ENV{DM_UDEV_DISABLE_OTHER_RULES_FLAG}=="1", GOTO="kpartx_end"
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ENV{DM_UUID}!="mpath-?*", GOTO="mpath_kpartx_end"
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# DM_SUBSYSTEM_UDEV_FLAG1 is the "skip_kpartx" flag.
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-# For events not generated by libdevmapper, we need to fetch it from db.
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-ENV{DM_UDEV_PRIMARY_SOURCE_FLAG}!="1", IMPORT{db}="DM_SUBSYSTEM_UDEV_FLAG1"
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+# For events not generated by libdevmapper, we need to fetch it from db:
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+# - "change" events with DM_ACTIVATION!="1" (e.g. partition table changes)
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+# - "add" events for which rules are not disabled ("coldplug" case)
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+ENV{DM_ACTIVATION}!="1", IMPORT{db}="DM_SUBSYSTEM_UDEV_FLAG1"
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+ACTION=="add", IMPORT{db}="DM_SUBSYSTEM_UDEV_FLAG1"
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ENV{DM_SUBSYSTEM_UDEV_FLAG1}=="1", GOTO="mpath_kpartx_end"
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# 11-dm-mpath.rules sets MPATH_UNCHANGED for events that can be ignored.
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--
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2.17.2
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