1#!/bin/ksh -p 2# 3# CDDL HEADER START 4# 5# This file and its contents are supplied under the terms of the 6# Common Development and Distribution License ("CDDL"), version 1.0. 7# You may only use this file in accordance with the terms of version 8# 1.0 of the CDDL. 9# 10# A full copy of the text of the CDDL should have accompanied this 11# source. A copy of the CDDL is also available via the Internet at 12# http://www.illumos.org/license/CDDL. 13# 14# CDDL HEADER END 15# 16 17# 18# Copyright (c) 2020, George Amanakis. All rights reserved. 19# 20 21. $STF_SUITE/include/libtest.shlib 22. $STF_SUITE/tests/functional/l2arc/l2arc.cfg 23 24# 25# DESCRIPTION: 26# L2ARC MFU/MRU arcstats do not leak 27# 28# STRATEGY: 29# 1. Create pool with a cache device. 30# 2. Create a random file in that pool, smaller than the cache device 31# and random read for 10 sec. 32# 3. Read l2arc_mfu_asize and l2arc_mru_asize 33# 4. Export pool. 34# 5. Verify l2arc_mfu_asize and l2arc_mru_asize are 0. 35# 6. Import pool. 36# 7. Read random read for 10 sec. 37# 8. Read l2arc_mfu_asize and l2arc_mru_asize 38# 9. Verify that L2ARC MFU increased and MFU+MRU = L2_asize. 39# 40 41verify_runnable "global" 42 43command -v fio > /dev/null || log_unsupported "fio missing" 44 45log_assert "L2ARC MFU/MRU arcstats do not leak." 46 47function cleanup 48{ 49 if poolexists $TESTPOOL ; then 50 destroy_pool $TESTPOOL 51 fi 52 53 log_must set_tunable32 L2ARC_NOPREFETCH $noprefetch 54} 55log_onexit cleanup 56 57# L2ARC_NOPREFETCH is set to 0 to let L2ARC handle prefetches 58typeset noprefetch=$(get_tunable L2ARC_NOPREFETCH) 59log_must set_tunable32 L2ARC_NOPREFETCH 0 60 61typeset fill_mb=800 62typeset cache_sz=$(( 1.4 * $fill_mb )) 63export FILE_SIZE=$(( floor($fill_mb / $NUMJOBS) ))M 64 65log_must truncate -s ${cache_sz}M $VDEV_CACHE 66 67log_must zpool create -f $TESTPOOL $VDEV cache $VDEV_CACHE 68 69log_must fio $FIO_SCRIPTS/mkfiles.fio 70log_must fio $FIO_SCRIPTS/random_reads.fio 71 72arcstat_quiescence_noecho l2_size 73log_must zpool offline $TESTPOOL $VDEV_CACHE 74arcstat_quiescence_noecho l2_size 75 76typeset l2_mfu_init=$(get_arcstat l2_mfu_asize) 77typeset l2_mru_init=$(get_arcstat l2_mru_asize) 78typeset l2_prefetch_init=$(get_arcstat l2_prefetch_asize) 79typeset l2_asize_init=$(get_arcstat l2_asize) 80 81log_must zpool online $TESTPOOL $VDEV_CACHE 82arcstat_quiescence_noecho l2_size 83log_must zpool export $TESTPOOL 84arcstat_quiescence_noecho l2_feeds 85 86log_must test $(get_arcstat l2_mfu_asize) -eq 0 87log_must test $(get_arcstat l2_mru_asize) -eq 0 88log_must zpool import -d $VDIR $TESTPOOL 89arcstat_quiescence_noecho l2_size 90 91log_must fio $FIO_SCRIPTS/random_reads.fio 92arcstat_quiescence_noecho l2_size 93log_must zpool offline $TESTPOOL $VDEV_CACHE 94arcstat_quiescence_noecho l2_size 95 96typeset l2_mfu_end=$(get_arcstat l2_mfu_asize) 97typeset l2_mru_end=$(get_arcstat l2_mru_asize) 98typeset l2_prefetch_end=$(get_arcstat l2_prefetch_asize) 99typeset l2_asize_end=$(get_arcstat l2_asize) 100 101log_must test $(( $l2_mru_end + $l2_mfu_end + $l2_prefetch_end - \ 102 $l2_asize_end )) -eq 0 103log_must test $(( $l2_mru_init + $l2_mfu_init + $l2_prefetch_init - \ 104 $l2_asize_init )) -eq 0 105 106log_must zpool destroy -f $TESTPOOL 107 108log_pass "L2ARC MFU/MRU arcstats do not leak." 109