Test that the zone allocator actually places by temperature bucket.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
tests/xfs/4205 | 105 +++++++++++++++++++++++++++++++++++++++++++++
tests/xfs/4205.out | 4 ++
2 files changed, 109 insertions(+)
create mode 100755 tests/xfs/4205
create mode 100644 tests/xfs/4205.out
diff --git a/tests/xfs/4205 b/tests/xfs/4205
new file mode 100755
index 000000000000..be508806ec0a
--- /dev/null
+++ b/tests/xfs/4205
@@ -0,0 +1,105 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2024 Christoph Hellwig.
+#
+# FS QA Test No. 4205
+#
+# Test data placement by write hints.
+#
+. ./common/preamble
+_begin_fstest auto rw zone
+
+_cleanup()
+{
+ cd /
+ _scratch_unmount >/dev/null 2>&1
+}
+
+# Import common functions.
+. ./common/filter
+
+_require_scratch
+
+_filter_rgno()
+{
+ # the rg number is in column 4 of xfs_bmap output
+ perl -ne '
+ $rg = (split /\s+/)[4] ;
+ if ($rg =~ /\d+/) {print "$rg "} ;
+ '
+}
+
+_test_placement()
+{
+ xfs_io_opts=$1
+
+ _scratch_mkfs_xfs >>$seqres.full 2>&1
+ _scratch_mount
+ _require_xfs_scratch_zoned 3
+
+ # Create a bunch of files for the three major temperature buckets
+ for i in `seq 1 100`; do
+ for hint in "short" "medium" "long"; do
+ file=$SCRATCH_MNT/$hint.$i
+
+ touch $file
+ $here/src/rw_hint $file $hint
+ $XFS_IO_PROG ${xfs_io_opts} \
+ -c 'pwrite 0 1m' \
+ $file >>$seqres.full
+ done
+ done
+
+ sync
+
+ # Check that all short lifetime files are placed together
+ short_rg=`xfs_bmap -v $SCRATCH_MNT/short.1 | _filter_rgno`
+ for i in `seq 2 100`; do
+ file=$SCRATCH_MNT/short.$i
+ rg=`xfs_bmap -v $file | _filter_rgno`
+ if [ "${rg}" != "${short_rg}" ]; then
+ echo "short RG mismatch for file $i: $short_rg/$rg"
+ fi
+ done
+
+ # Check that all medium lifetime files are placed together,
+ # but not in the short RG
+ medium_rg=`xfs_bmap -v $SCRATCH_MNT/medium.1 | _filter_rgno`
+ if [ "${medium}" == "${short_rg}" ]; then
+ echo "medium rg == short_rg"
+ fi
+ for i in `seq 2 100`; do
+ file=$SCRATCH_MNT/medium.$i
+ rg=`xfs_bmap -v $file | _filter_rgno`
+ if [ "${rg}" != "${medium_rg}" ]; then
+ echo "medium RG mismatch for file $i: $medium_rg/$rg"
+ fi
+ done
+
+ # Check that none of the long lifetime files are colocated with
+ # short and medium ones
+ for i in `seq 1 100`; do
+ file=$SCRATCH_MNT/long.$i
+ rg=`xfs_bmap -v $file | _filter_rgno`
+ if [ "${rg}" == "${short_rg}" ]; then
+ echo "long file $i placed into short RG "
+ fi
+ if [ "${rg}" == "${medium_rg}" ]; then
+ echo "long file $i placed into medium RG"
+ fi
+ done
+
+ _scratch_unmount
+}
+
+echo "Testing buffered I/O:"
+_test_placement ""
+
+echo "Testing synchronous buffered I/O:"
+_test_placement "-s"
+
+echo "Testing direct I/O:"
+_test_placement "-d"
+
+status=0
+exit
diff --git a/tests/xfs/4205.out b/tests/xfs/4205.out
new file mode 100644
index 000000000000..3331e361a36d
--- /dev/null
+++ b/tests/xfs/4205.out
@@ -0,0 +1,4 @@
+QA output created by 4205
+Testing buffered I/O:
+Testing synchronous buffered I/O:
+Testing direct I/O:
--
2.47.2
