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Diffstat (limited to 'tests/zfs-tests/tests/functional/l2arc/l2arc_l2miss_pos.ksh')
| -rw-r--r-- | tests/zfs-tests/tests/functional/l2arc/l2arc_l2miss_pos.ksh | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/tests/zfs-tests/tests/functional/l2arc/l2arc_l2miss_pos.ksh b/tests/zfs-tests/tests/functional/l2arc/l2arc_l2miss_pos.ksh new file mode 100644 index 000000000000..783484f52c13 --- /dev/null +++ b/tests/zfs-tests/tests/functional/l2arc/l2arc_l2miss_pos.ksh @@ -0,0 +1,94 @@ +#!/bin/ksh -p +# +# CDDL HEADER START +# +# This file and its contents are supplied under the terms of the +# Common Development and Distribution License ("CDDL"), version 1.0. +# You may only use this file in accordance with the terms of version +# 1.0 of the CDDL. +# +# A full copy of the text of the CDDL should have accompanied this +# source. A copy of the CDDL is also available via the Internet at +# http://www.illumos.org/license/CDDL. +# +# CDDL HEADER END +# + +# +# Copyright (c) 2020, Adam Moss. All rights reserved. +# + +. $STF_SUITE/include/libtest.shlib +. $STF_SUITE/tests/functional/l2arc/l2arc.cfg + +# +# DESCRIPTION: +# l2arc_misses does not increment upon reads from a pool without l2arc +# +# STRATEGY: +# 1. Create pool with a cache device. +# 2. Create pool without a cache device. +# 3. Create a random file in the no-cache-device pool, +# and random read for 10 sec. +# 4. Check that l2arc_misses hasn't risen +# 5. Create a random file in the pool with the cache device, +# and random read for 10 sec. +# 6. Check that l2arc_misses has risen +# + +verify_runnable "global" + +log_assert "l2arc_misses does not increment upon reads from a pool without l2arc." + +function cleanup +{ + if poolexists $TESTPOOL ; then + destroy_pool $TESTPOOL + fi + if poolexists $TESTPOOL1 ; then + destroy_pool $TESTPOOL1 + fi +} +log_onexit cleanup + +typeset fill_mb=800 +typeset cache_sz=$(( 1.4 * $fill_mb )) +export FILE_SIZE=$(( floor($fill_mb / $NUMJOBS) ))M + +log_must truncate -s ${cache_sz}M $VDEV_CACHE + +log_must zpool create -O compression=off -f $TESTPOOL $VDEV cache $VDEV_CACHE +log_must zpool create -O compression=off -f $TESTPOOL1 $VDEV1 + +# I/O to pool without l2arc - expect that l2_misses stays constant +export DIRECTORY=/$TESTPOOL1 +log_must fio $FIO_SCRIPTS/mkfiles.fio +log_must fio $FIO_SCRIPTS/random_reads.fio +# attempt to remove entries for pool from ARC so we would try +# to hit the nonexistent L2ARC for subsequent reads +log_must zpool export $TESTPOOL1 +log_must zpool import $TESTPOOL1 -d $VDEV1 + +typeset starting_miss_count=$(get_arcstat l2_misses) + +log_must fio $FIO_SCRIPTS/random_reads.fio +log_must test $(get_arcstat l2_misses) -eq $starting_miss_count + +# I/O to pool with l2arc - expect that l2_misses rises +export DIRECTORY=/$TESTPOOL +log_must fio $FIO_SCRIPTS/mkfiles.fio +log_must fio $FIO_SCRIPTS/random_reads.fio +# wait for L2ARC writes to actually happen +arcstat_quiescence_noecho l2_size +# attempt to remove entries for pool from ARC so we would try +# to hit L2ARC for subsequent reads +log_must zpool export $TESTPOOL +log_must zpool import $TESTPOOL -d $VDEV + +log_must fio $FIO_SCRIPTS/random_reads.fio +log_must test $(get_arcstat l2_misses) -gt $starting_miss_count + +log_must zpool destroy -f $TESTPOOL +log_must zpool destroy -f $TESTPOOL1 + +log_pass "l2arc_misses does not increment upon reads from a pool without l2arc." |