| #!/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." |