| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0+ |
| # Copyright (c) 2019 Oracle, Inc. All Rights Reserved. |
| # |
| # FS QA Test No. 530 |
| # |
| # Stress test creating a lot of unlinked O_TMPFILE files and recovering them |
| # after a crash, checking that we don't blow up the filesystem. This is sort |
| # of a performance test for the xfs unlinked inode backref patchset, but it |
| # applies to most other filesystems. |
| # |
| # Use only a single CPU to test the single threaded situation. |
| # |
| . ./common/preamble |
| _begin_fstest auto quick shutdown unlink |
| testfile=$TEST_DIR/$seq.txt |
| |
| # Import common functions. |
| |
| # real QA test starts here |
| _supported_fs generic |
| _require_scratch |
| _require_scratch_shutdown |
| _require_metadata_journaling |
| _require_test_program "t_open_tmpfiles" |
| |
| _scratch_mkfs >> $seqres.full 2>&1 |
| _scratch_mount |
| |
| # Set ULIMIT_NOFILE to min(file-max / 2, 50000 files per LOAD_FACTOR) |
| # so that this test doesn't take forever or OOM the box |
| max_files=$((50000 * LOAD_FACTOR)) |
| max_allowable_files=$(( $(cat /proc/sys/fs/file-max) / 2 )) |
| test $max_allowable_files -gt 0 && test $max_files -gt $max_allowable_files && \ |
| max_files=$max_allowable_files |
| ulimit -n $max_files |
| |
| # Open a lot of unlinked files |
| echo create >> $seqres.full |
| $here/src/t_open_tmpfiles $SCRATCH_MNT $(_scratch_shutdown_handle) >> $seqres.full |
| |
| # Unmount to prove that we can clean it all |
| echo umount >> $seqres.full |
| before=$(date +%s) |
| _scratch_unmount |
| after=$(date +%s) |
| echo "Unmount took $((after - before))s." >> $seqres.full |
| |
| # Mount so that we can run the usual checks |
| echo silence is golden |
| _scratch_mount |
| status=0 |
| exit |