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view usr/src/test/zfs-tests/tests/functional/persist_l2arc/persist_l2arc_007_pos.ksh @ 25465:2c417db70a87
3525 Persistent L2ARC
Portions contributed by: Saso Kiselkov <skiselkov@gmail.com>
Portions contributed by: Jorgen Lundman <lundman@lundman.net>
Portions contributed by: Brian Behlendorf <behlendorf1@llnl.gov>
Portions contributed by: Alexander Motin <mav@FreeBSD.org>
Portions contributed by: Jason King <jason.king@joyent.com>
Reviewed by: C Fraire <cfraire@me.com>
Reviewed by: Toomas Soome <tsoome@me.com>
Approved by: Dan McDonald <danmcd@joyent.com>
author | George Amanakis <gamanakis@gmail.com> |
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date | Thu, 30 Jul 2020 18:40:44 -0500 |
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#!/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, George Amanakis. All rights reserved. # . $STF_SUITE/include/libtest.shlib . $STF_SUITE/tests/functional/persist_l2arc/persist_l2arc.cfg # # DESCRIPTION: # Off/onlining an L2ARC device results in rebuilding L2ARC, vdev present. # # STRATEGY: # 1. Create pool with a cache device. # 2. Create a random file in that pool and random read for 30 sec. # 3. Read the amount of log blocks written from the header of the # L2ARC device. # 4. Offline the L2ARC device. # 5. Online the L2ARC device. # 6. Read the amount of log blocks rebuilt in arcstats and compare to # (3). # 7. Check if the labels of the L2ARC device are intact. # verify_runnable "global" log_assert "Off/onlining an L2ARC device results in rebuilding L2ARC, vdev present." function cleanup { if poolexists $TESTPOOL ; then destroy_pool $TESTPOOL fi log_must set_tunable32 l2arc_noprefetch $noprefetch log_must set_tunable32 l2arc_rebuild_blocks_min_l2size \ $rebuild_blocks_min_l2size } log_onexit cleanup # l2arc_noprefetch is set to 0 to let L2ARC handle prefetches typeset noprefetch=$(get_tunable l2arc_noprefetch) typeset rebuild_blocks_min_l2size=$(get_tunable l2arc_rebuild_blocks_min_l2size) log_must set_tunable32 l2arc_noprefetch 0 log_must set_tunable32 l2arc_rebuild_blocks_min_l2size 0 typeset fill_mb=800 typeset cache_sz=$(( floor($fill_mb / 2) )) export FILE_SIZE=$(( floor($fill_mb / $NUMJOBS) ))M log_must truncate -s ${cache_sz}M $VDEV_CACHE log_must zpool create -f $TESTPOOL $VDEV cache $VDEV_CACHE log_must fio $FIO_SCRIPTS/mkfiles.fio log_must fio $FIO_SCRIPTS/random_reads.fio log_must zpool offline $TESTPOOL $VDEV_CACHE sleep 10 typeset l2_rebuild_log_blk_start=$(get_arcstat l2_rebuild_log_blks) typeset l2_dh_log_blk=$(zdb -l $VDEV_CACHE | grep log_blk_count | \ awk '{print $2}') log_must zpool online $TESTPOOL $VDEV_CACHE sleep 10 typeset l2_rebuild_log_blk_end=$(get_arcstat l2_rebuild_log_blks) log_must test $l2_dh_log_blk -eq $(( $l2_rebuild_log_blk_end - $l2_rebuild_log_blk_start )) log_must test $l2_dh_log_blk -gt 0 log_must zdb -lq $VDEV_CACHE log_must zpool destroy -f $TESTPOOL log_pass "Off/onlining an L2ARC device results in rebuilding L2ARC, vdev present."