Re: [PATCH v2] btrfs: add test for btrfstune squota enable/disable

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On Fri, Jul 12, 2024 at 4:53 PM Boris Burkov <boris@xxxxxx> wrote:
>
> btrfstune supports enabling simple quotas on a fleshed out filesystem
> (without adding owner refs) and clearing squotas entirely from a
> filesystem that ran under squotas (clearing the incompat bit)
>
> Test that these operations work on a relatively complicated filesystem
> populated by fsstress while preserving fssum.
>
> Signed-off-by: Boris Burkov <boris@xxxxxx>
> ---
>  tests/btrfs/332     | 69 +++++++++++++++++++++++++++++++++++++++++++++
>  tests/btrfs/332.out |  2 ++
>  2 files changed, 71 insertions(+)
>  create mode 100755 tests/btrfs/332
>  create mode 100644 tests/btrfs/332.out
>
> diff --git a/tests/btrfs/332 b/tests/btrfs/332
> new file mode 100755
> index 000000000..d5cf32664
> --- /dev/null
> +++ b/tests/btrfs/332
> @@ -0,0 +1,69 @@
> +#! /bin/bash
> +# SPDX-License-Identifier: GPL-2.0
> +# Copyright (c) 2024 Meta Platforms, Inc.  All Rights Reserved.
> +#
> +# FS QA Test No. btrfs/332
> +#
> +# Test tune enabling and removing squotas on a live filesystem
> +#
> +. ./common/preamble
> +_begin_fstest auto quick qgroup
> +
> +# Import common functions.
> +. ./common/filter.btrfs
> +
> +# real QA test starts here
> +_supported_fs btrfs
> +_require_scratch_enable_simple_quota
> +_require_no_compress
> +_require_command "$BTRFS_TUNE_PROG" btrfstune
> +_require_fssum
> +_require_btrfs_dump_super
> +_require_btrfs_command inspect-internal dump-tree
> +$BTRFS_TUNE_PROG --help 2>&1 | grep -wq -- '--enable-simple-quota' || \
> +       _notrun "$BTRFS_TUNE_PROG too old (must support --enable-simple-quota)"
> +$BTRFS_TUNE_PROG --help 2>&1 | grep -wq -- '--remove-simple-quota' || \
> +       _notrun "$BTRFS_TUNE_PROG too old (must support --remove-simple-quota)"
> +
> +_scratch_mkfs >> $seqres.full 2>&1 || _fail "mkfs failed"
> +_scratch_mount
> +
> +# do some stuff
> +d1=$SCRATCH_MNT/d1
> +d2=$SCRATCH_MNT/d2
> +mkdir $d1
> +mkdir $d2
> +run_check $FSSTRESS_PROG -d $d1 -w -n 2000 $FSSTRESS_AVOID
> +fssum_pre=$($FSSUM_PROG -A $SCRATCH_MNT)
> +
> +# enable squotas
> +_scratch_unmount
> +$BTRFS_TUNE_PROG --enable-simple-quota $SCRATCH_DEV >> $seqres.full 2>&1 || \
> +       _fail "enable simple quota failed"

Instead of doing a "|| _fail ..." everywhere, can't we simply not
redirect stderr to the .full file and instead have a golden output
mismatch in case an error happens?
Not only that makes the test shorter and easier to read, it goes along
with the most common practice in fstests.

> +_check_btrfs_filesystem $SCRATCH_DEV
> +_scratch_mount
> +fssum_post=$($FSSUM_PROG -A $SCRATCH_MNT)
> +[ "$fssum_pre" == "$fssum_post" ] \
> +       || echo "fssum $fssum_pre does not match $fssum_post after enabling squota"
> +
> +# do some more stuff
> +run_check $FSSTRESS_PROG -d $d2 -w -n 2000 $FSSTRESS_AVOID
> +fssum_pre=$($FSSUM_PROG -A $SCRATCH_MNT)
> +_scratch_unmount
> +_check_btrfs_filesystem $SCRATCH_DEV
> +
> +$BTRFS_TUNE_PROG --remove-simple-quota $SCRATCH_DEV >> $seqres.full 2>&1 || \
> +       _fail "remove simple quota failed"

Same here.

With that fixed (if it can be done):

Reviewed-by: Filipe Manana <fdmanana@xxxxxxxx>

Thanks.

> +_check_btrfs_filesystem $SCRATCH_DEV
> +$BTRFS_UTIL_PROG inspect-internal dump-super $SCRATCH_DEV | grep 'SIMPLE_QUOTA'
> +$BTRFS_UTIL_PROG inspect-internal dump-tree $SCRATCH_DEV  | grep -e 'QUOTA' -e 'QGROUP'
> +
> +_scratch_mount
> +fssum_post=$($FSSUM_PROG -A $SCRATCH_MNT)
> +_scratch_unmount
> +[ "$fssum_pre" == "$fssum_post" ] \
> +       || echo "fssum $fssum_pre does not match $fssum_post after disabling squota"
> +
> +echo Silence is golden
> +status=0
> +exit
> diff --git a/tests/btrfs/332.out b/tests/btrfs/332.out
> new file mode 100644
> index 000000000..adb316136
> --- /dev/null
> +++ b/tests/btrfs/332.out
> @@ -0,0 +1,2 @@
> +QA output created by 332
> +Silence is golden
> --
> 2.45.2
>
>





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