linux-ext4 - Re: [PATCHv3 2/2] generic: Add integrity tests with synchronous directio

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Message-ID: <20231209050913.2l42zctsh44bfhit@dell-per750-06-vm-08.rhts.eng.pek2.redhat.com>
Date: Sat, 9 Dec 2023 13:09:13 +0800
From: Zorro Lang <zlang@...hat.com>
To: "Ritesh Harjani (IBM)" <ritesh.list@...il.com>
Cc: fstests@...r.kernel.org, linux-ext4@...r.kernel.org,
	Jan Kara <jack@...e.cz>, Gao Xiang <hsiangkao@...ux.alibaba.com>,
	Ojaswin Mujoo <ojaswin@...ux.ibm.com>
Subject: Re: [PATCHv3 2/2] generic: Add integrity tests with synchronous
 directio

On Mon, Nov 20, 2023 at 04:49:34PM +0530, Ritesh Harjani (IBM) wrote:
> This test covers data & metadata integrity check with directio with
> o_sync flag and checks the file contents & size after sudden fileystem
> shutdown once the directio write is completed. ext4 directio after iomap
> conversion was broken in the sense that if the FS crashes after
> synchronous directio write, it's file size is not properly updated.
> This test adds a testcase to cover such scenario.
> 
> Man page of open says that -
> O_SYNC provides synchronized I/O file integrity completion, meaning write
> operations will flush data and all associated metadata to the underlying
> hardware
> 
> Reported-by: Gao Xiang <hsiangkao@...ux.alibaba.com>
> Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@...il.com>
> ---
>  tests/generic/733     | 54 +++++++++++++++++++++++++++++++++++++++++++
>  tests/generic/733.out | 22 ++++++++++++++++++
>  2 files changed, 76 insertions(+)
>  create mode 100755 tests/generic/733
>  create mode 100644 tests/generic/733.out
> 
> diff --git a/tests/generic/733 b/tests/generic/733
> new file mode 100755
> index 00000000..18021e8a
> --- /dev/null
> +++ b/tests/generic/733
> @@ -0,0 +1,54 @@
> +#! /bin/bash
> +# SPDX-License-Identifier: GPL-2.0
> +# Copyright (c) 2023 IBM Corporation.  All Rights Reserved.
> +#
> +# FS QA Test 471
> +#
> +# Integrity test for O_SYNC with buff-io, dio, aio-dio with sudden shutdown.
> +# Based on a testcase reported by Gao Xiang <hsiangkao@...ux.alibaba.com>
> +#
> +
> +. ./common/preamble
> +_begin_fstest auto quick shutdown aio
> +
> +# real QA test starts here
> +_supported_fs generic
> +_require_scratch
> +_require_scratch_shutdown
> +_require_aiodio aio-dio-write-verify
> +
> +_fixed_by_kernel_commit 91562895f803 \
> +	"ext4: properly sync file size update after O_SYNC direct IO"

As this a generic test case, so:

[[ "$FSTYP" =~ ext* ]] && ...

Anyway, I'll change that when I merge it. Other looks good to me

Reviewed-by: Zorro Lang <zlang@...hat.com>

> +
> +_scratch_mkfs > $seqres.full 2>&1
> +_scratch_mount
> +
> +echo "T-1: Create a 1M file using buff-io & O_SYNC"
> +$XFS_IO_PROG -fs -c "pwrite -S 0x5a 0 1M" $SCRATCH_MNT/testfile.t1 > /dev/null 2>&1
> +echo "T-1: Shutdown the fs suddenly"
> +_scratch_shutdown
> +echo "T-1: Cycle mount"
> +_scratch_cycle_mount
> +echo "T-1: File contents after cycle mount"
> +_hexdump $SCRATCH_MNT/testfile.t1
> +
> +echo "T-2: Create a 1M file using O_DIRECT & O_SYNC"
> +$XFS_IO_PROG -fsd -c "pwrite -S 0x5a 0 1M" $SCRATCH_MNT/testfile.t2 > /dev/null 2>&1
> +echo "T-2: Shutdown the fs suddenly"
> +_scratch_shutdown
> +echo "T-2: Cycle mount"
> +_scratch_cycle_mount
> +echo "T-2: File contents after cycle mount"
> +_hexdump $SCRATCH_MNT/testfile.t2
> +
> +echo "T-3: Create a 1M file using AIO-DIO & O_SYNC"
> +$AIO_TEST -a size=1048576 -S -N $SCRATCH_MNT/testfile.t3 > /dev/null 2>&1
> +echo "T-3: Shutdown the fs suddenly"
> +_scratch_shutdown
> +echo "T-3: Cycle mount"
> +_scratch_cycle_mount
> +echo "T-3: File contents after cycle mount"
> +_hexdump $SCRATCH_MNT/testfile.t3
> +
> +status=0
> +exit
> diff --git a/tests/generic/733.out b/tests/generic/733.out
> new file mode 100644
> index 00000000..e0536a4e
> --- /dev/null
> +++ b/tests/generic/733.out
> @@ -0,0 +1,22 @@
> +QA output created by 733
> +T-1: Create a 1M file using buff-io & O_SYNC
> +T-1: Shutdown the fs suddenly
> +T-1: Cycle mount
> +T-1: File contents after cycle mount
> +000000 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  >ZZZZZZZZZZZZZZZZ<
> +*
> +100000
> +T-2: Create a 1M file using O_DIRECT & O_SYNC
> +T-2: Shutdown the fs suddenly
> +T-2: Cycle mount
> +T-2: File contents after cycle mount
> +000000 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  >ZZZZZZZZZZZZZZZZ<
> +*
> +100000
> +T-3: Create a 1M file using AIO-DIO & O_SYNC
> +T-3: Shutdown the fs suddenly
> +T-3: Cycle mount
> +T-3: File contents after cycle mount
> +000000 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  >ZZZZZZZZZZZZZZZZ<
> +*
> +100000
> -- 
> 2.41.0
> 
>