Merge pull request #4482 from kilobyte/disable-eatmydata

kill eatmydata in some tests

src/test/out_err_mt/TEST0

 #!/usr/bin/env bash
 #
-# Copyright 2015-2019, Intel Corporation
+# Copyright 2015-2020, Intel Corporation
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
@@ -39,6 +39,7 @@
 
 require_test_type medium
 require_fs_type any
+disable_eatmydata
 
 setup
 

src/test/out_err_mt/TEST1

 #!/usr/bin/env bash
 #
-# Copyright 2015-2019, Intel Corporation
+# Copyright 2015-2020, Intel Corporation
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
@@ -39,6 +39,7 @@
 
 require_test_type medium
 require_fs_type any
+disable_eatmydata
 
 require_valgrind 3.7
 configure_valgrind drd force-enable

src/test/out_err_mt/TEST2

 #!/usr/bin/env bash
 #
-# Copyright 2015-2019, Intel Corporation
+# Copyright 2015-2020, Intel Corporation
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
@@ -39,6 +39,7 @@
 
 require_test_type medium
 require_fs_type any
+disable_eatmydata
 
 require_valgrind 3.7
 configure_valgrind helgrind force-enable

src/test/unittest/unittest.sh

@@ -1454,6 +1454,19 @@ require_dax_device_alignments() {
 	require_node_dax_device_alignments -1 $*
 }
 
+#
+# disable_eatmydata -- ensure invalid msyncs fail
+#
+# Distros (and people) like to use eatmydata to kill fsync-likes during builds
+# and testing. This is nice for speed, but we actually rely on msync failing
+# in some tests.
+#
+disable_eatmydata() {
+	export LD_PRELOAD="${LD_PRELOAD/#libeatmydata.so/}"
+	export LD_PRELOAD="${LD_PRELOAD/ libeatmydata.so/}"
+	export LD_PRELOAD="${LD_PRELOAD/:libeatmydata.so/}"
+}
+
 #
 # require_fs_type -- only allow script to continue for a certain fs type
 #