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 43log_assert "L2ARC MFU/MRU arcstats do not leak." 44 45function cleanup 46{ 47 if poolexists $TESTPOOL ; then 48 destroy_pool $TESTPOOL 49 fi 50 51 log_must set_tunable32 l2arc_noprefetch $noprefetch 52} 53log_onexit cleanup 54 55# l2arc_noprefetch is set to 0 to let L2ARC handle prefetches 56typeset noprefetch=$(get_tunable l2arc_noprefetch) 57log_must set_tunable32 l2arc_noprefetch 0 58 59typeset fill_mb=800 60typeset cache_sz=$(( 1.4 * $fill_mb )) 61export FILE_SIZE=$(( floor($fill_mb / $NUMJOBS) ))M 62 63log_must truncate -s ${cache_sz}M $VDEV_CACHE 64 65log_must zpool create -f $TESTPOOL $VDEV cache $VDEV_CACHE 66 67log_must fio $FIO_SCRIPTS/mkfiles.fio 68log_must fio $FIO_SCRIPTS/random_reads.fio 69 70arcstat_quiescence_noecho l2_size 71log_must zpool offline $TESTPOOL $VDEV_CACHE 72arcstat_quiescence_noecho l2_size 73 74typeset l2_mfu_init=$(get_arcstat l2_mfu_asize) 75typeset l2_mru_init=$(get_arcstat l2_mru_asize) 76typeset l2_prefetch_init=$(get_arcstat l2_prefetch_asize) 77typeset l2_asize_init=$(get_arcstat l2_asize) 78 79log_must zpool online $TESTPOOL $VDEV_CACHE 80arcstat_quiescence_noecho l2_size 81log_must zpool export $TESTPOOL 82arcstat_quiescence_noecho l2_feeds 83 84log_must test $(get_arcstat l2_mfu_asize) -eq 0 85log_must test $(get_arcstat l2_mru_asize) -eq 0 86log_must zpool import -d $VDIR $TESTPOOL 87arcstat_quiescence_noecho l2_size 88 89log_must fio $FIO_SCRIPTS/random_reads.fio 90arcstat_quiescence_noecho l2_size 91log_must zpool offline $TESTPOOL $VDEV_CACHE 92arcstat_quiescence_noecho l2_size 93 94typeset l2_mfu_end=$(get_arcstat l2_mfu_asize) 95typeset l2_mru_end=$(get_arcstat l2_mru_asize) 96typeset l2_prefetch_end=$(get_arcstat l2_prefetch_asize) 97typeset l2_asize_end=$(get_arcstat l2_asize) 98 99log_must test $(( $l2_mfu_end - $l2_mfu_init )) -gt 0 100log_must test $(( $l2_mru_end + $l2_mfu_end + $l2_prefetch_end - \ 101 $l2_asize_end )) -eq 0 102log_must test $(( $l2_mru_init + $l2_mfu_init + $l2_prefetch_init - \ 103 $l2_asize_init )) -eq 0 104 105log_must zpool destroy -f $TESTPOOL 106 107log_pass "L2ARC MFU/MRU arcstats do not leak." 108