Re: [PATCH] btrfs/298: add test for showing qgroups include staled sorted by path

[David Sterba <dsterba@suse.cz>]

On Mon, Oct 09, 2023 at 02:31:23PM +0000, Sidong Yang wrote:
> Test for showing qgroups include a staled qgroup list sorted by path.
> It crashed without checking qgroup has empty path. It fixed by the
> following commit in btrfs-progs:
> 
> cd7f1e48 ("btrfs-progs: qgroup: check null in comparing paths")

This is a progs patch and I'd like to have the test case there, while it
does not hurt to have it in the fstests too but IMHO it's not very
useful there.

> Signed-off-by: Sidong Yang <realwakka@gmail.com>
> ---
>  tests/btrfs/298     | 34 ++++++++++++++++++++++++++++++++++
>  tests/btrfs/298.out |  2 ++
>  2 files changed, 36 insertions(+)
>  create mode 100755 tests/btrfs/298
>  create mode 100644 tests/btrfs/298.out
> 
> diff --git a/tests/btrfs/298 b/tests/btrfs/298
> new file mode 100755
> index 00000000..5457423d
> --- /dev/null
> +++ b/tests/btrfs/298
> @@ -0,0 +1,34 @@
> +#! /bin/bash
> +# SPDX-License-Identifier: GPL-2.0
> +# Copyright (c) 2023 Sidong Yang.  All Rights Reserved.
> +#
> +# FS QA Test 298
> +#
> +# Test that showing qgourps list includes a staled qgroup without crash.
> +#
> +. ./common/preamble
> +_begin_fstest auto quick qgroup
> +
> + . ./common/filter
> +
> +_supported_fs btrfs
> +_require_test
> +_require_scratch
> +
> +_scratch_mkfs > /dev/null 2>&1
> +_scratch_mount
> +
> +# Create stale qgroup with creating and deleting a subvolume.
> +$BTRFS_UTIL_PROG quota enable $SCRATCH_MNT >> $seqres.full
> +$BTRFS_UTIL_PROG subvolume create $SCRATCH_MNT/a >> $seqres.full
> +$BTRFS_UTIL_PROG subvolume delete $SCRATCH_MNT/a >> $seqres.full
> +
> +# Show qgroups list with sorting path without crash.
> +$BTRFS_UTIL_PROG qgroup show --sort path $SCRATCH_MNT >> $seqres.full
> +
> +_scratch_unmount

I've created a test case for btrfs-progs with the same commands, only
using the other wrappers to run them.