On 10/24/24 23:44, Darrick J. Wong wrote:
On Wed, Oct 23, 2024 at 12:56:20AM +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/
Suggested-by: Ojaswin Mujoo <ojaswin@xxxxxxxxxxxxx>
Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@xxxxxxxxx>
Reviewed-by: Ojaswin Mujoo <ojaswin@xxxxxxxxxxxxx>
Signed-off-by: Nirjhar Roy <nirjhar@xxxxxxxxxxxxx>
---
tests/generic/365 | 156 ++++++++++++++++++++++++++++++++++++++++++
tests/generic/365.out | 26 +++++++
2 files changed, 182 insertions(+)
create mode 100755 tests/generic/365
create mode 100644 tests/generic/365.out
diff --git a/tests/generic/365 b/tests/generic/365
new file mode 100755
index 00000000..85a7ce9a
--- /dev/null
+++ b/tests/generic/365
@@ -0,0 +1,156 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2024 Nirjhar Roy (nirjhar@xxxxxxxxxxxxx). All Rights Reserved.
+#
+# FS QA Test 365
+#
+# 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
+. ./common/xfs
+
+_begin_fstest ioctl quick
+
+_supported_fs xfs
+
+_fixed_by_kernel_commit XXXXXXXXXXXX \
+ "xfs: Check for delayed allocations before setting extsize",
+
+_require_scratch
+
+FILE_DATA_SIZE=1M
Do these tests work correctly with fsblock size of 64k? Just curious
since Pankaj just sent a series doing 1M -> 4M bumps to fix quota
issues.
Yes I have tested this with 2k, 4k, 16k, 64k on ppc64le and x86_64
+filter_extsz()
+{
+ sed "s/$EXTSIZE/EXTSIZE/g"
+}
+
+setup()
+{
+ _scratch_mkfs >> "$seqres.full" 2>&1
+ _scratch_mount >> "$seqres.full" 2>&1
+ BLKSZ=`_get_block_size $SCRATCH_MNT`
+ EXTSIZE=$(( BLKSZ*2 ))
Might want to check that there isn't an extsize/cowextsize set on the
root directory due to mkfs options.
Noted.
+}
+
+read_file_extsize()
+{
+ $XFS_IO_PROG -c "extsize" $1 | _filter_scratch | filter_extsz
+}
+
+check_extsz_and_xflag()
+{
+ local filename=$1
+ read_file_extsize $filename
+ _test_xfs_xflags_field $filename "e" && echo "e flag set" || echo "e flag unset"
+}
+
+check_extsz_xflag_across_remount()
+{
+ local filename=$1
+ _scratch_cycle_mount
+ check_extsz_and_xflag $filename
+}
+
+# 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
+}
+
+check_extsz_xflag_before_and_after_reset()
+{
+ local filename=$1
+ check_extsz_xflag_across_remount $filename
+ 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
+ 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
+
+ check_extsz_xflag_across_remount $filename
+ 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
+
+ check_extsz_xflag_across_remount $filename
+ 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
+ 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
+ echo
+}
Does this work for filesystems that don't have delalloc? Like fsdax
filesystems?
--D
I haven't tested this on fsdax filesystem. Only tested on xfs with
various bs.
+setup
+echo -e "EXTSIZE = $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/365.out b/tests/generic/365.out
new file mode 100644
index 00000000..38cd0885
--- /dev/null
+++ b/tests/generic/365.out
@@ -0,0 +1,26 @@
+QA output created by 365
+TEST: Set extsize on empty file
+[EXTSIZE] SCRATCH_MNT/new-file-00
+e flag set
+Re-setting extsize hint to 0
+[0] 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
+[0] SCRATCH_MNT/new-file-01
+e flag unset
+
+TEST: Set extsize on non-empty file with allocated extents
+xfs_io: FS_IOC_FSSETXATTR SCRATCH_MNT/new-file-02: Invalid argument
+[0] SCRATCH_MNT/new-file-02
+e flag unset
+
+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
