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From 7bd59e7926c6921121087eb067befaa896c900a4 Mon Sep 17 00:00:00 2001
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From: NeilBrown <neilb@suse.de>
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Date: Wed, 18 Sep 2019 15:12:55 +1000
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Subject: [RHEL7.8 PATCH V2 41/47] udev: allow for udev attribute reading bug.
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There is a bug in udev (which will hopefully get fixed, but
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we should allow for it anways).
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When reading a sysfs attribute, it first reads the whole
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value of the attribute, then reads again expecting to get
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a read of 0 bytes, like you would with an ordinary file.
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If the sysfs attribute changed between these two reads, it can
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get a mixture of two values.
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In particular, if it reads when 'array_state' is changing from
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'clear' to 'inactive', it can find the value as "clear\nve".
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This causes the test for "|clear|active" to fail, so systemd is allowed
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to think that the array is ready - when it isn't.
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So change the pattern to allow for this but adding a wildcard at
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the end.
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Also don't allow for an empty string - reading array_state will
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never return an empty string - if it exists at all, it will be
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non-empty.
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Signed-off-by: NeilBrown <neilb@suse.de>
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Signed-off-by: Jes Sorensen <jsorensen@fb.com>
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---
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udev-md-raid-arrays.rules | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/udev-md-raid-arrays.rules b/udev-md-raid-arrays.rules
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index d391665..c8fa8e8 100644
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--- a/udev-md-raid-arrays.rules
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+++ b/udev-md-raid-arrays.rules
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@@ -14,7 +14,7 @@ ENV{DEVTYPE}=="partition", GOTO="md_ignore_state"
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# never leave state 'inactive'
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ATTR{md/metadata_version}=="external:[A-Za-z]*", ATTR{md/array_state}=="inactive", GOTO="md_ignore_state"
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TEST!="md/array_state", ENV{SYSTEMD_READY}="0", GOTO="md_end"
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-ATTR{md/array_state}=="|clear|inactive", ENV{SYSTEMD_READY}="0", GOTO="md_end"
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+ATTR{md/array_state}=="clear*|inactive", ENV{SYSTEMD_READY}="0", GOTO="md_end"
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LABEL="md_ignore_state"
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IMPORT{program}="BINDIR/mdadm --detail --no-devices --export $devnode"
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--
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2.7.5
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