Re: [PATCH v2] f2fs/005: add testcase to check checkpoint disabling functionality

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On Mon, Oct 28, 2024 at 10:17:00PM +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>
> ---
> v2:
> - add _fixed_by_kernel_commit()
> - use _scratch_mkfs_sized() rather than formating size-specified

This test looks good to me, if no more review points from f2fs list, I'll
merge it.

Reviewed-by: Zorro Lang <zlang@xxxxxxxxxx>

> loop device
> - code cleanup
>  tests/f2fs/005     | 47 ++++++++++++++++++++++++++++++++++++++++++++++
>  tests/f2fs/005.out |  2 ++
>  2 files changed, 49 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..a817d51a
> --- /dev/null
> +++ b/tests/f2fs/005
> @@ -0,0 +1,47 @@
> +#! /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.
> +#
> +. ./common/preamble
> +_begin_fstest auto quick
> +
> +_fixed_by_kernel_commit xxxxxxxxxxxx \
> +	"f2fs: fix f2fs_bug_on when uninstalling filesystem call f2fs_evict_inode."
> +
> +_require_scratch
> +_scratch_mkfs_sized $((1024*1024*50)) >> $seqres.full
> +
> +# use mode=lfs to let f2fs always triggers OPU
> +_scratch_mount -o mode=lfs,checkpoint=disable:10%,noinline_dentry >> $seqres.full
> +
> +testfile=$SCRATCH_MNT/testfile
> +tmpfile=$SCRATCH_MNT/tmpfile
> +tmpdir=$SCRATCH_MNT/tmpdir
> +
> +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
> +
> +_scratch_mount -o remount,checkpoint=enable
> +
> +# it may hang umount if tmpdir is still dirty during evict()
> +_scratch_unmount
> +
> +echo "Silence is golden"
> +
> +status=0
> +exit
> diff --git a/tests/f2fs/005.out b/tests/f2fs/005.out
> new file mode 100644
> index 00000000..a5027f12
> --- /dev/null
> +++ b/tests/f2fs/005.out
> @@ -0,0 +1,2 @@
> +QA output created by 005
> +Silence is golden
> -- 
> 2.40.1
> 





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