Re: [PATCH] f2fs/005: add testcase to check checkpoint disabling functionality

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On Sat, Oct 12, 2024 at 06:15:01PM +0800, Chao Yu wrote:
> This patch introduce a regression test to check whether f2fs handles
> dirty inode correctly when checkpoint is disabled in a corner case,
> it may hang umount before the bug is fixed.
> 
> Cc: Qi Han <hanqi@xxxxxxxx>
> Signed-off-by: Chao Yu <chao@xxxxxxxxxx>
> ---
>  tests/f2fs/005     | 59 ++++++++++++++++++++++++++++++++++++++++++++++
>  tests/f2fs/005.out |  1 +
>  2 files changed, 60 insertions(+)
>  create mode 100755 tests/f2fs/005
>  create mode 100644 tests/f2fs/005.out
> 
> diff --git a/tests/f2fs/005 b/tests/f2fs/005
> new file mode 100755
> index 00000000..4faf1bb9
> --- /dev/null
> +++ b/tests/f2fs/005
> @@ -0,0 +1,59 @@
> +#! /bin/bash
> +# SPDX-License-Identifier: GPL-2.0
> +# Copyright (c) 2024 Oppo.  All Rights Reserved.
> +#
> +# FS QA Test No. f2fs/005
> +#
> +# This is a regression test to check whether f2fs handles dirty
> +# inode correctly when checkpoint is disabled, it may hang umount
> +# before the bug is fixed.

Is this a duplicated test of another patch from you?

https://lore.kernel.org/fstests/20241025034413.5s6ecilfgqcoeudt@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/T/#t

Or just similar?

If this's a different test ...(see below)

> +#
> +. ./common/preamble
> +_begin_fstest auto quick
> +
> +_cleanup()
> +{
> +	rm -f $img
> +	rmdir $mnt
> +	_scratch_unmount >> $seqres.full
> +	cd /
> +	rm -r -f $tmp.*
> +}
> +
> +_require_scratch
> +_scratch_mkfs >> $seqres.full
> +_scratch_mount >> $seqres.full
> +
> +img=$SCRATCH_MNT/f2fs.img
> +mnt=$SCRATCH_MNT/f2fs.mnt
> +testfile=$mnt/testfile
> +tmpfile=$mnt/tmpfile
> +tmpdir=$mnt/tmpdir
> +
> +mkdir $mnt
> +dd if=/dev/zero of=$img bs=1M count=50 2>/dev/null
> +$MKFS_F2FS_PROG -f $img >/dev/null 2>&1
> +sync
> +
> +# use mode=lfs to let f2fs always triggers OPU
> +mount -t $FSTYP -o loop,mode=lfs,checkpoint=disable:10%,noinline_dentry $img $mnt

You can use _scratch_mkfs_sized, don't need a loop device.
And without the loop device, above _cleanup is not needed either.

> +
> +dd if=/dev/zero of=$testfile bs=1M count=5 2>/dev/null
> +mkdir $tmpdir
> +touch $tmpfile
> +sync
> +
> +# it dirties tmpdir inode by updating ctime,
> +# but it doesn't moving the inode to gdirty_list.
> +mv $tmpfile $tmpdir
> +
> +# it runs out of free segment
> +dd if=/dev/zero of=$testfile bs=1M count=5 conv=notrunc conv=fsync 2>/dev/null
> +
> +mount -o remount,checkpoint=enable $mnt
> +
> +# it may hang umount if tmpdir is still dirty during evict()
> +umount $mnt
> +
> +status=0
> +exit
> diff --git a/tests/f2fs/005.out b/tests/f2fs/005.out
> new file mode 100644
> index 00000000..caa3c880
> --- /dev/null
> +++ b/tests/f2fs/005.out
> @@ -0,0 +1 @@
> +QA output created by 005

If nothing output, please:

echo "Silence is golden"

Thanks,
Zorro

> -- 
> 2.40.1
> 





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