[PATCH 3/4] xfs: test filesystem creation with xfs_protofile

Darrick J. Wong
2025-02-19T00:57:22Z

From: Darrick J. Wong <djwong@kernel.org>

Test how well we can format a fully populated filesystem with a
protofile that was generated with xfs_protofile.

Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
---
common/config | 1
tests/xfs/1894 | 109 ++++++++++++++++++++++++++++++++++++++++++++++++++++
tests/xfs/1894.out | 4 ++
3 files changed, 114 insertions(+)
create mode 100755 tests/xfs/1894
create mode 100644 tests/xfs/1894.out

diff --git a/common/config b/common/config
index 193b7af432dc2b..da12399da421c7 100644
--- a/common/config
+++ b/common/config
@@ -161,6 +161,7 @@ export MKSWAP_PROG="$(type -P mkswap)"
MKSWAP_PROG="$MKSWAP_PROG -f"

export XFS_LOGPRINT_PROG="$(type -P xfs_logprint)"
+export XFS_PROTOFILE_PROG="$(type -P xfs_protofile)"
export XFS_REPAIR_PROG="$(type -P xfs_repair)"
export XFS_DB_PROG="$(type -P xfs_db)"
export XFS_METADUMP_PROG="$(type -P xfs_metadump)"
diff --git a/tests/xfs/1894 b/tests/xfs/1894
new file mode 100755
index 00000000000000..2f6beea2c433bf
--- /dev/null
+++ b/tests/xfs/1894
@@ -0,0 +1,109 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2025 Oracle, Inc. All Rights Reserved.
+#
+# FS QA Test No. 1894
+#
+# Populate a XFS filesystem, use xfs_protofile to recreate the filesystem, and
+# compare the contents.
+#
+. ./common/preamble
+_begin_fstest auto scrub
+
+_cleanup()
+{
+ command -v _kill_fsstress &>/dev/null && _kill_fsstress
+ cd /
+ test -e "$testfiles" && _unmount $testfiles/mount &>/dev/null
+ test -e "$testfiles" && rm -r -f $testfiles
+}
+
+_register_cleanup "_cleanup" BUS
+
+# Import common functions.
+. ./common/filter
+. ./common/populate
+. ./common/fuzzy
+
+_require_command "$XFS_PROTOFILE_PROG" xfs_protofile
+_require_test
+_require_scratch
+_require_scrub
+_require_populate_commands
+
+make_md5()
+{
+ (cd $1 ; find . -type f -print0 | xargs -0 md5sum) > $tmp.md5.$2
+}
+
+cmp_md5()
+{
+ (cd $1 ; md5sum --quiet -c $tmp.md5.$2)
+}
+
+make_stat()
+{
+ # columns: raw mode in hex,
+ # major rdev for special
+ # minor rdev for special
+ # uid of owner
+ # gid of owner
+ # file type
+ # total size
+ # name
+ # We can't directly control directory sizes so filter them.
+ (cd $1 ; find . -print0 |
+ xargs -0 stat -c '%f %t:%T %u %g %F %s %n' |
+ sed -e 's/ directory [1-9][0-9]* / directory SIZE /g' |
+ sort) > $tmp.stat.$2
+}
+
+cmp_stat()
+{
+ diff -u $tmp.stat.$1 $tmp.stat.$2
+}
+
+testfiles=$TEST_DIR/$seq
+mkdir -p $testfiles/mount
+
+echo "Format and populate"
+_scratch_populate_cached nofill >> $seqres.full 2>&1
+_scratch_mount
+
+_run_fsstress -n 1000 -d $SCRATCH_MNT/newfiles
+
+make_stat $SCRATCH_MNT before
+make_md5 $SCRATCH_MNT before
+
+kb_needed=$(du -k -s $SCRATCH_MNT | awk '{print $1}')
+img_size=$((kb_needed * 2))
+test "$img_size" -lt $((300 * 1024)) && img_size=$((300 * 1024))
+
+echo "Clone image with protofile"
+$XFS_PROTOFILE_PROG $SCRATCH_MNT > $testfiles/protofile
+
+truncate -s "${img_size}k" $testfiles/image
+if ! _try_mkfs_dev -p $testfiles/protofile $testfiles/image &> $tmp.mkfs; then
+ cat $tmp.mkfs >> $seqres.full
+
+ # mkfs.xfs' protofile parser has some limitations in what it can copy
+ # in from the prototype files. If a source file has more than 64k
+ # worth of xattr names then formatting will fail because listxattr
+ # cannot return that much information.
+ if grep -q 'Argument list too long' $tmp.mkfs; then
+ _notrun "source filesystem was too large"
+ fi
+ cat $tmp.mkfs
+fi
+
+_mount $testfiles/image $testfiles/mount
+
+echo "Check file contents"
+make_stat $testfiles/mount after
+cmp_stat before after
+cmp_md5 $testfiles/mount before
+_unmount $testfiles/mount
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/1894.out b/tests/xfs/1894.out
new file mode 100644
index 00000000000000..5dd46993549187
--- /dev/null
+++ b/tests/xfs/1894.out
@@ -0,0 +1,4 @@
+QA output created by 1894
+Format and populate
+Clone image with protofile
+Check file contents