90 lines
2.5 KiB
Bash
Executable File
90 lines
2.5 KiB
Bash
Executable File
#!/bin/ksh -p
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#
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# CDDL HEADER START
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#
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# This file and its contents are supplied under the terms of the
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# Common Development and Distribution License ("CDDL"), version 1.0.
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# You may only use this file in accordance with the terms of version
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# 1.0 of the CDDL.
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#
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# A full copy of the text of the CDDL should have accompanied this
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# source. A copy of the CDDL is also available via the Internet at
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# http://www.illumos.org/license/CDDL.
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#
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# CDDL HEADER END
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#
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#
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# Copyright (c) 2020, George Amanakis. All rights reserved.
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#
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. $STF_SUITE/include/libtest.shlib
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. $STF_SUITE/tests/functional/l2arc/l2arc.cfg
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#
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# DESCRIPTION:
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# Persistent L2ARC fails as expected when L2ARC_REBUILD_ENABLED = 0
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#
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# STRATEGY:
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# 1. Set L2ARC_REBUILD_ENABLED = 0
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# 2. Create pool with a cache device.
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# 3. Create a random file in that pool and random read for 10 sec.
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# 4. Export pool.
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# 5. Import pool.
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# 6. Check in zpool iostat if the cache device has space allocated.
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# 7. Read the file written in (3) and check if l2_hits in
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# /proc/spl/kstat/zfs/arcstats increased.
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#
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verify_runnable "global"
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command -v fio > /dev/null || log_unsupported "fio missing"
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log_assert "Persistent L2ARC fails as expected when L2ARC_REBUILD_ENABLED = 0."
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function cleanup
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{
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if poolexists $TESTPOOL ; then
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destroy_pool $TESTPOOL
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fi
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log_must set_tunable32 L2ARC_REBUILD_ENABLED $rebuild_enabled
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log_must set_tunable32 L2ARC_NOPREFETCH $noprefetch
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}
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log_onexit cleanup
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# L2ARC_NOPREFETCH is set to 0 to let L2ARC handle prefetches
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typeset noprefetch=$(get_tunable L2ARC_NOPREFETCH)
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log_must set_tunable32 L2ARC_NOPREFETCH 0
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# disable L2ARC rebuild
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typeset rebuild_enabled=$(get_tunable L2ARC_REBUILD_ENABLED)
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log_must set_tunable32 L2ARC_REBUILD_ENABLED 0
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typeset fill_mb=800
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typeset cache_sz=$(( 2 * $fill_mb ))
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export FILE_SIZE=$(( floor($fill_mb / $NUMJOBS) ))M
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log_must truncate -s ${cache_sz}M $VDEV_CACHE
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log_must zpool create -f $TESTPOOL $VDEV cache $VDEV_CACHE
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log_must fio $FIO_SCRIPTS/mkfiles.fio
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log_must fio $FIO_SCRIPTS/random_reads.fio
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log_must zpool export $TESTPOOL
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typeset l2_success_start=$(get_arcstat l2_rebuild_success)
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log_must zpool import -d $VDIR $TESTPOOL
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log_mustnot test "$(zpool iostat -Hpv $TESTPOOL $VDEV_CACHE | awk '{print $2}')" -gt 80000000
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typeset l2_success_end=$(get_arcstat l2_rebuild_success)
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log_mustnot test $l2_success_end -gt $l2_success_start
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log_must zpool destroy -f $TESTPOOL
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log_must set_tunable32 L2ARC_REBUILD_ENABLED $rebuild_enabled
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log_pass "Persistent L2ARC fails as expected when L2ARC_REBUILD_ENABLED = 0."
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