On 11/21/24 22:57, Darrick J. Wong wrote:
On Thu, Nov 21, 2024 at 10:39:12AM +0530, Nirjhar Roy wrote:
This commit adds new tests that checks the behaviour of xfs/ext4
filesystems when extsize hint is set on file with inode size as 0,
non-empty files with allocated and delalloc extents and so on.
Although currently this test is placed under tests/generic, it
only runs on xfs and there is an ongoing patch series[1] to
enable extsize hints for ext4 as well.
[1] https://lore.kernel.org/linux-ext4/cover.1726034272.git.ojaswin@xxxxxxxxxxxxx/
Reviewed-by Ritesh Harjani (IBM) <ritesh.list@xxxxxxxxx>
Reviewed-by: Ojaswin Mujoo <ojaswin@xxxxxxxxxxxxx>
Suggested-by: Ojaswin Mujoo <ojaswin@xxxxxxxxxxxxx>
Signed-off-by: Nirjhar Roy <nirjhar@xxxxxxxxxxxxx>
Looks ok, though you might want to change generic/366 to a higher number
because that's now taken.
Reviewed-by: "Darrick J. Wong" <djwong@xxxxxxxxxx>
--D
Okay. I will update the test sequence number in the next revision.
--NR
---
tests/generic/366 | 175 ++++++++++++++++++++++++++++++++++++++++++
tests/generic/366.out | 26 +++++++
2 files changed, 201 insertions(+)
create mode 100755 tests/generic/366
create mode 100644 tests/generic/366.out
diff --git a/tests/generic/366 b/tests/generic/366
new file mode 100755
index 00000000..25d23f42
--- /dev/null
+++ b/tests/generic/366
@@ -0,0 +1,175 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2024 Nirjhar Roy (nirjhar@xxxxxxxxxxxxx). All Rights Reserved.
+#
+# FS QA Test 366
+#
+# This test verifies that extent allocation hint setting works correctly on
+# files with no extents allocated and non-empty files which are truncated.
+# It also checks that the extent hints setting fails with non-empty file
+# i.e, with any file with allocated extents or delayed allocation. We also
+# check if the extsize value and the xflag bit actually got reflected after
+# setting/re-setting the extsize value.
+
+. ./common/config
+. ./common/filter
+. ./common/preamble
+
+_begin_fstest ioctl quick
+
+_fixed_by_kernel_commit "2a492ff66673 \
+ xfs: Check for delayed allocations before setting \
+ extsize"
+
+_require_scratch_extsize
+
+FILE_DATA_SIZE=1M
+
+get_default_extsize()
+{
+ if [ -z $1 ] || [ ! -d $1 ]; then
+ echo "Missing mount point argument for get_default_extsize"
+ exit 1
+ fi
+ $XFS_IO_PROG -c "extsize" "$1" | sed 's/^\[\([0-9]\+\)\].*/\1/'
+}
+
+filter_extsz()
+{
+ sed "s/\[$1\]/\[EXTSIZE\]/g"
+}
+
+setup()
+{
+ _scratch_mkfs >> "$seqres.full" 2>&1
+ _scratch_mount >> "$seqres.full" 2>&1
+ BLKSZ=`_get_block_size $SCRATCH_MNT`
+ DEFAULT_EXTSIZE=`get_default_extsize $SCRATCH_MNT`
+ EXTSIZE=$(( BLKSZ*2 ))
+ # Make sure the new extsize is not the same as the default
+ # extsize so that we can observe it changing
+ [[ "$DEFAULT_EXTSIZE" -eq "$EXTSIZE" ]] && EXTSIZE=$(( BLKSZ*4 ))
+}
+
+read_file_extsize()
+{
+ $XFS_IO_PROG -c "extsize" $1 | _filter_scratch | filter_extsz $2
+}
+
+check_extsz_and_xflag()
+{
+ local filename=$1
+ local extsize=$2
+ read_file_extsize $filename $extsize
+ _test_fsxattr_xflag $filename "extsize" && echo "e flag set" || \
+ echo "e flag unset"
+}
+
+check_extsz_xflag_across_remount()
+{
+ local filename=$1
+ local extsize=$2
+ _scratch_cycle_mount
+ check_extsz_and_xflag $filename $extsize
+}
+
+# Extsize flag should be cleared when extsize is reset, so this function
+# checks that this behavior is followed.
+reset_extsz_and_recheck_extsz_xflag()
+{
+ local filename=$1
+ echo "Re-setting extsize hint to 0"
+ $XFS_IO_PROG -c "extsize 0" $filename
+ check_extsz_xflag_across_remount $filename "0"
+}
+
+check_extsz_xflag_before_and_after_reset()
+{
+ local filename=$1
+ local extsize=$2
+ check_extsz_xflag_across_remount $filename $extsize
+ reset_extsz_and_recheck_extsz_xflag $filename
+}
+
+test_empty_file()
+{
+ echo "TEST: Set extsize on empty file"
+ local filename=$1
+ $XFS_IO_PROG \
+ -c "open -f $filename" \
+ -c "extsize $EXTSIZE" \
+
+ check_extsz_xflag_before_and_after_reset $filename $EXTSIZE
+ echo
+}
+
+test_data_delayed()
+{
+ echo "TEST: Set extsize on non-empty file with delayed allocation"
+ local filename=$1
+ $XFS_IO_PROG \
+ -c "open -f $filename" \
+ -c "pwrite -q 0 $FILE_DATA_SIZE" \
+ -c "extsize $EXTSIZE" | _filter_scratch
+
+ echo "test for default extsize setting if any"
+ read_file_extsize $filename $DEFAULT_EXTSIZE
+ echo
+}
+
+test_data_allocated()
+{
+ echo "TEST: Set extsize on non-empty file with allocated extents"
+ local filename=$1
+ $XFS_IO_PROG \
+ -c "open -f $filename" \
+ -c "pwrite -qW 0 $FILE_DATA_SIZE" \
+ -c "extsize $EXTSIZE" | _filter_scratch
+
+ echo "test for default extsize setting if any"
+ read_file_extsize $filename $DEFAULT_EXTSIZE
+ echo
+}
+
+test_truncate_allocated()
+{
+ echo "TEST: Set extsize after truncating a file with allocated extents"
+ local filename=$1
+ $XFS_IO_PROG \
+ -c "open -f $filename" \
+ -c "pwrite -qW 0 $FILE_DATA_SIZE" \
+ -c "truncate 0" \
+ -c "extsize $EXTSIZE" \
+
+ check_extsz_xflag_across_remount $filename $EXTSIZE
+ echo
+}
+
+test_truncate_delayed()
+{
+ echo "TEST: Set extsize after truncating a file with delayed allocation"
+ local filename=$1
+ $XFS_IO_PROG \
+ -c "open -f $filename" \
+ -c "pwrite -q 0 $FILE_DATA_SIZE" \
+ -c "truncate 0" \
+ -c "extsize $EXTSIZE" \
+
+ check_extsz_xflag_across_remount $filename $EXTSIZE
+ echo
+}
+
+setup
+echo -e "EXTSIZE = $EXTSIZE DEFAULT_EXTSIZE = $DEFAULT_EXTSIZE \
+ BLOCKSIZE = $BLKSZ\n" >> "$seqres.full"
+
+NEW_FILE_NAME_PREFIX=$SCRATCH_MNT/new-file-
+
+test_empty_file "$NEW_FILE_NAME_PREFIX"00
+test_data_delayed "$NEW_FILE_NAME_PREFIX"01
+test_data_allocated "$NEW_FILE_NAME_PREFIX"02
+test_truncate_allocated "$NEW_FILE_NAME_PREFIX"03
+test_truncate_delayed "$NEW_FILE_NAME_PREFIX"04
+
+status=0
+exit
diff --git a/tests/generic/366.out b/tests/generic/366.out
new file mode 100644
index 00000000..cdd2f5fa
--- /dev/null
+++ b/tests/generic/366.out
@@ -0,0 +1,26 @@
+QA output created by 366
+TEST: Set extsize on empty file
+[EXTSIZE] SCRATCH_MNT/new-file-00
+e flag set
+Re-setting extsize hint to 0
+[EXTSIZE] SCRATCH_MNT/new-file-00
+e flag unset
+
+TEST: Set extsize on non-empty file with delayed allocation
+xfs_io: FS_IOC_FSSETXATTR SCRATCH_MNT/new-file-01: Invalid argument
+test for default extsize setting if any
+[EXTSIZE] SCRATCH_MNT/new-file-01
+
+TEST: Set extsize on non-empty file with allocated extents
+xfs_io: FS_IOC_FSSETXATTR SCRATCH_MNT/new-file-02: Invalid argument
+test for default extsize setting if any
+[EXTSIZE] SCRATCH_MNT/new-file-02
+
+TEST: Set extsize after truncating a file with allocated extents
+[EXTSIZE] SCRATCH_MNT/new-file-03
+e flag set
+
+TEST: Set extsize after truncating a file with delayed allocation
+[EXTSIZE] SCRATCH_MNT/new-file-04
+e flag set
+
--
2.43.5
--
---
Nirjhar Roy
Linux Kernel Developer
IBM, Bangalore
