xfs: Test bulkstat special query for root inode

This is a test for the fix:
  bf3cb3944792 xfs: allow single bulkstat of special inodes
This fix added a feature to query the root inode number of a filesystem.
This test creates a file with a lower inode number than the root and run
a query for the root inode.

Signed-off-by: Hironori Shiina <shiina.hironori@fujitsu.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Zorro Lang <zlang@kernel.org>

diff --git a/tests/xfs/557 b/tests/xfs/557
new file mode 100644 (file)
index 0000000..425695d
--- /dev/null
+++ b/tests/xfs/557
@@ -0,0 +1,63 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2022 Fujitsu Limited. All Rights Reserved.
+#
+# FS QA Test No. 557
+#
+# This is a test for:
+#   bf3cb3944792 (xfs: allow single bulkstat of special inodes)
+# Create a filesystem which contains an inode with a lower number
+# than the root inode. Then verify that XFS_BULK_IREQ_SPECIAL_ROOT gets
+# the correct root inode number.
+#
+. ./common/preamble
+_begin_fstest auto quick prealloc
+
+_supported_fs xfs
+_require_xfs_io_command "falloc"
+_require_xfs_io_command "bulkstat_single"
+_require_scratch
+
+_fixed_by_kernel_commit XXXXXXXXXXXX \
+       "xfs: get root inode correctly at bulkstat"
+
+# A large stripe unit will put the root inode out quite far
+# due to alignment, leaving free blocks ahead of it.
+_scratch_mkfs_xfs -d sunit=1024,swidth=1024 > $seqres.full 2>&1 || _fail "mkfs failed"
+
+# Mounting /without/ a stripe should allow inodes to be allocated
+# in lower free blocks, without the stripe alignment.
+_scratch_mount -o sunit=0,swidth=0
+
+root_inum=$(stat -c %i $SCRATCH_MNT)
+
+# Consume space after the root inode so that the blocks before
+# root look "close" for the next inode chunk allocation
+$XFS_IO_PROG -f -c "falloc 0 16m" $SCRATCH_MNT/fillfile
+
+# And make a bunch of inodes until we (hopefully) get one lower
+# than root, in a new inode chunk.
+echo "root_inum: $root_inum" >> $seqres.full
+for i in $(seq 0 4096) ; do
+       fname=$SCRATCH_MNT/$(printf "FILE_%03d" $i)
+       touch $fname
+       inum=$(stat -c "%i" $fname)
+       [[ $inum -lt $root_inum ]] && break
+done
+
+echo "created: $inum" >> $seqres.full
+
+[[ $inum -lt $root_inum ]] || _notrun "Could not set up test"
+
+# Get root ino with XFS_BULK_IREQ_SPECIAL_ROOT
+bulkstat_root_inum=$($XFS_IO_PROG -c 'bulkstat_single root' $SCRATCH_MNT | grep bs_ino | awk '{print $3;}')
+echo "bulkstat_root_inum: $bulkstat_root_inum" >> $seqres.full
+if [ $root_inum -ne $bulkstat_root_inum ]; then
+       echo "root ino mismatch: expected:${root_inum}, actual:${bulkstat_root_inum}"
+fi
+
+echo "Silence is golden"
+
+# success, all done
+status=0
+exit

diff --git a/tests/xfs/557.out b/tests/xfs/557.out
new file mode 100644 (file)
index 0000000..1f1ae1d
--- /dev/null
+++ b/tests/xfs/557.out
@@ -0,0 +1,2 @@
+QA output created by 557
+Silence is golden