On 06/07/2023 07:42, Boris Burkov wrote:
Test some interesting basic and edge cases of simple quotas.
To some extent, this is redundant with the alternate testing strategy of
using MKFS_OPTIONS to enable simple quotas, running the full suite and
relying on kernel warnings and fsck to surface issues.
Signed-off-by: Boris Burkov <boris@xxxxxx>
---
tests/btrfs/400 | 439 ++++++++++++++++++++++++++++++++++++++++++++
tests/btrfs/400.out | 2 +
2 files changed, 441 insertions(+)
create mode 100755 tests/btrfs/400
create mode 100644 tests/btrfs/400.out
diff --git a/tests/btrfs/400 b/tests/btrfs/400
new file mode 100755
index 000000000..c3548d42e
--- /dev/null
+++ b/tests/btrfs/400
@@ -0,0 +1,439 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2023 Meta Platforms, Inc. All Rights Reserved.
+#
+# FS QA Test 400
+#
+# Test common btrfs simple quotas scenarios involving sharing extents and
+# removing them in various orders.
+#
+. ./common/preamble
+_begin_fstest auto quick qgroup copy_range snapshot
+
+# Import common functions.
+# . ./common/filter
+
+# real QA test starts here
+
+# Modify as appropriate.
+_supported_fs btrfs
+_require_scratch
I don't see any prerequisite checking and call of notrun() on the
systems without the kernel or progs simple-quota support. Is it not
required?
+
+SUBV=$SCRATCH_MNT/subv
+NESTED=$SCRATCH_MNT/subv/nested
+SNAP=$SCRATCH_MNT/snap
+K=1024
+M=$(($K * $K))
+NR_FILL=1024
+FILL_SZ=$((8 * $K))
+TOTAL_FILL=$(($NR_FILL * $FILL_SZ))
+EB_SZ=$((16 * $K))
+EXT_SZ=$((128 * M))
+LIMIT_NR=8
+LIMIT=$(($EXT_SZ * $LIMIT_NR))
Style consistency requires the use of lowercase for test local
variables.
+
+prepare()
+{
+ echo "preparing" > /dev/kmsg
Please use $seqres.full or stdout for debugging purpose.
+ _scratch_mkfs >> $seqres.full
+ _scratch_mount
+ enable_quota "s"
+ $BTRFS_UTIL_PROG subvolume create $SUBV >> $seqres.full
+ set_subvol_limit 256 $LIMIT
+ check_subvol_usage 256 0
+
+ echo "filling" > /dev/kmsg
+ # Create a bunch of little filler files to generate several levels in
+ # the btree, to make snapshotting sharing scenarios complex enough.
+ $FIO_PROG --name=filler --directory=$SUBV --rw=randwrite --nrfiles=$NR_FILL --filesize=$FILL_SZ >/dev/null 2>&1
+ echo "filled" > /dev/kmsg
+ check_subvol_usage 256 $TOTAL_FILL
+
+ # Create a single file whose extents we will explicitly share/unshare.
+ do_write $SUBV/f $EXT_SZ
+ check_subvol_usage 256 $(($TOTAL_FILL + $EXT_SZ))
+ echo "prepared" > /dev/kmsg
+}
+
+
+echo "Silence is golden"
We can have the echo part, like (echo 'prepared' > /dev/kmsg), directed
to stdout; this will be useful for verification and debugging as well.
Thanks, Anand
+
+# success, all done
+status=0
+exit
diff --git a/tests/btrfs/400.out b/tests/btrfs/400.out
new file mode 100644
index 000000000..c940c6206
--- /dev/null
+++ b/tests/btrfs/400.out
@@ -0,0 +1,2 @@
+QA output created by 400
+Silence is golden
