[LTP] [PATCH v3 2/2] Add test for data integrity over NFS

[Petr Vorel]

Hi,

> +++ b/testcases/network/nfs/nfs_stress/nfs10.sh
> @@ -0,0 +1,47 @@
> +#!/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_SETUP="nfs10_setup"
> +TST_TESTFUNC="do_test"
> +TST_DEVICE_SIZE=1024

FYI requiring 1GB free space can break the test (even for UDP which should be
mostly skipped with TCONF due UDP being disabled on mainline kernel).
On UDP it runs quickly (< 10s), but on TCP it runs for whole timeout (~ 33 min).

This is not a new limitation in shell API, it always existed. But recent commit
8532eb2c61 ("Add support for setting loop device size in shell tests")
increased change of hitting the problem. I don't think it should block this
patchset, I'll send a patch fixing the API soon.

Kind regards,
Petr

# ./nfs10.sh -v 3 -t udp
nfs10 1 TINFO: Running: nfs10.sh -v 3 -t udp

nfs10 1 TINFO: 10.0.0.2/24 -- 10.0.0.1/24
nfs10 1 TINFO: fd00:1:1:1::2/64 -- fd00:1:1:1::1/64
nfs10 1 TINFO: Using /tmp/LTP_nfs10.XI7vLEjIkA as tmpdir (tmpfs filesystem)
tst_device.c:299: TWARN: Failed to create test_dev.img: ENOSPC (28)

Usage:
tst_device acquire [size [filename]]
tst_device release /path/to/device
tst_device clear /path/to/device

nfs10 1 TWARN: Failed to acquire device
tst_supported_fs_types.c:169: TINFO: Skipping ext2 as requested by the test
tst_supported_fs_types.c:169: TINFO: Skipping ext3 as requested by the test
tst_supported_fs_types.c:97: TINFO: Kernel supports ext4
tst_supported_fs_types.c:62: TINFO: mkfs.ext4 does exist
tst_supported_fs_types.c:97: TINFO: Kernel supports xfs
tst_supported_fs_types.c:62: TINFO: mkfs.xfs does exist
tst_supported_fs_types.c:97: TINFO: Kernel supports btrfs
tst_supported_fs_types.c:62: TINFO: mkfs.btrfs does exist
tst_supported_fs_types.c:97: TINFO: Kernel supports bcachefs
tst_supported_fs_types.c:62: TINFO: mkfs.bcachefs does exist
tst_supported_fs_types.c:169: TINFO: Skipping vfat as requested by the test
tst_supported_fs_types.c:169: TINFO: Skipping exfat as requested by the test
tst_supported_fs_types.c:169: TINFO: Skipping ntfs as requested by the test
tst_supported_fs_types.c:169: TINFO: Skipping tmpfs as requested by the test
nfs10 1 TINFO: === Testing on ext4 ===
tst_device.c:389: TWARN: Failed to clear 512k block on

Usage:
tst_device acquire [size [filename]]
tst_device release /path/to/device
tst_device clear /path/to/device

...

> +TST_TIMEOUT=660
...