[LTP] [PATCH 5/5] Add test for data integrity over NFS

[Martin Doucha]

Add NFS test which checks data integrity of random writes into a file,
with both buffered and direct I/O.

Signed-off-by: Martin Doucha <mdoucha@suse.cz>
---

The lower loop count is necessary because NFS has very large block size,
up to 256KB on x86_64. The new tests take ~50 minutes to complete in total
on my laptop. With the default loop count, the TCP tests would all time out.

 runtest/net.nfs                           | 11 +++++++
 testcases/network/nfs/nfs_stress/nfs10.sh | 36 +++++++++++++++++++++++
 2 files changed, 47 insertions(+)
 create mode 100755 testcases/network/nfs/nfs_stress/nfs10.sh

diff --git a/runtest/net.nfs b/runtest/net.nfs
index 7f84457bc..fef993da8 100644
--- a/runtest/net.nfs
+++ b/runtest/net.nfs
@@ -94,6 +94,17 @@ nfs09_v40_ip6t nfs09.sh -6 -v 4 -t tcp
 nfs09_v41_ip6t nfs09.sh -6 -v 4.1 -t tcp
 nfs09_v42_ip6t nfs09.sh -6 -v 4.2 -t tcp
 
+nfs10_v30_ip4u nfs10.sh -v 3 -t udp
+nfs10_v30_ip4t nfs10.sh -v 3 -t tcp
+nfs10_v40_ip4t nfs10.sh -v 4 -t tcp
+nfs10_v41_ip4t nfs10.sh -v 4.1 -t tcp
+nfs10_v42_ip4t nfs10.sh -v 4.2 -t tcp
+nfs10_v30_ip6u nfs10.sh -6 -v 3 -t udp
+nfs10_v30_ip6t nfs10.sh -6 -v 3 -t tcp
+nfs10_v40_ip6t nfs10.sh -6 -v 4 -t tcp
+nfs10_v41_ip6t nfs10.sh -6 -v 4.1 -t tcp
+nfs10_v42_ip6t nfs10.sh -6 -v 4.2 -t tcp
+
 nfslock01_v30_ip4u nfslock01.sh -v 3 -t udp
 nfslock01_v30_ip4t nfslock01.sh -v 3 -t tcp
 nfslock01_v40_ip4t nfslock01.sh -v 4 -t tcp
diff --git a/testcases/network/nfs/nfs_stress/nfs10.sh b/testcases/network/nfs/nfs_stress/nfs10.sh
new file mode 100755
index 000000000..b4e777285
--- /dev/null
+++ b/testcases/network/nfs/nfs_stress/nfs10.sh
@@ -0,0 +1,36 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (C) 2024 SUSE LLC <mdoucha@suse.cz>
+#
+# DESCRIPTION: Verify data integrity over NFS, with and without O_DIRECT
+
+TST_CNT=4
+TST_TESTFUNC="do_test"
+TST_DEVICE_SIZE=1024
+
+do_test1()
+{
+	tst_res TINFO "Testing buffered write, buffered read"
+	EXPECT_PASS fsplough -c 512 -d "$PWD"
+}
+
+do_test2()
+{
+	tst_res TINFO "Testing buffered write, direct read"
+	EXPECT_PASS fsplough -c 512 -R -d "$PWD"
+}
+
+do_test3()
+{
+	tst_res TINFO "Testing direct write, buffered read"
+	EXPECT_PASS fsplough -c 512 -W -d "$PWD"
+}
+
+do_test4()
+{
+	tst_res TINFO "Testing direct write, direct read"
+	EXPECT_PASS fsplough -c 512 -RW -d "$PWD"
+}
+
+. nfs_lib.sh
+tst_run
-- 
2.46.0