1 files changed, 39 insertions, 0 deletions

diff --git a/meta/recipes-extended/mdadm/files/0001-tests-00readonly-Run-udevadm-settle-before-setting-r.patch b/meta/recipes-extended/mdadm/files/0001-tests-00readonly-Run-udevadm-settle-before-setting-r.patch
new file mode 100644
index 0000000000..c621c082e8
--- /dev/null
+++ b/meta/recipes-extended/mdadm/files/0001-tests-00readonly-Run-udevadm-settle-before-setting-r.patch
@@ -0,0 +1,39 @@
+From 39b381252c32275079344d30de18b76fda4bba26 Mon Sep 17 00:00:00 2001
+From: Logan Gunthorpe <logang@deltatee.com>
+Date: Wed, 27 Jul 2022 15:52:45 -0600
+Subject: [PATCH] tests/00readonly: Run udevadm settle before setting ro
+
+In some recent kernel versions, 00readonly fails with:
+
+  mdadm: failed to set readonly for /dev/md0: Device or resource busy
+  ERROR: array is not read-only!
+
+This was traced down to a race condition with udev holding a reference
+to the block device at the same time as trying to set it read only.
+
+To fix this, call udevadm settle before setting the array read only.
+
+Upstream-Status: Backport [https://git.kernel.org/pub/scm/utils/mdadm/mdadm.git/commit/?id=39b381252c32275079344d30de18b76fda4bba26]
+
+Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
+Signed-off-by: Jes Sorensen <jsorensen@fb.com>
+Signed-off-by: Mingli Yu <mingli.yu@windriver.com>
+---
+ tests/00readonly | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/tests/00readonly b/tests/00readonly
+index 39202487..afe243b3 100644
+--- a/tests/00readonly
++++ b/tests/00readonly
+@@ -12,6 +12,7 @@ do
+                        $dev1 $dev2 $dev3 $dev4 --assume-clean
+                check nosync
+                check $level
++               udevadm settle
+                mdadm -ro $md0
+                check readonly
+                state=$(cat /sys/block/md0/md/array_state)
+-- 
+2.25.1
+