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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
. $STF_SUITE/tests/functional/cli_root/zfs_load-key/zfs_load-key_common.kshlib
#
# DESCRIPTION:
# Persistent L2ARC with an encrypted ZFS file system succeeds
#
# STRATEGY:
# 1. Create pool with a cache device.
# 2. Create a an encrypted ZFS file system.
# 3. Create a random file in the encrypted file system and random
# read for 30 sec.
# 4. Export pool.
# 5. Read the amount of log blocks written from the header of the
# L2ARC device.
# 5. Import pool.
# 6. Mount the encrypted ZFS file system.
# 7. Read the amount of log blocks rebuilt in arcstats and compare to
# (5).
# 8. Check if the labels of the L2ARC device are intact.
#
# * We can predict the minimum bytes of L2ARC restored if we subtract
# from the effective size of the cache device the bytes l2arc_evict()
# evicts:
# l2: L2ARC device size - VDEV_LABEL_START_SIZE - l2ad_dev_hdr_asize
# wr_sz: l2arc_write_max + l2arc_write_boost (worst case)
# blk_overhead: wr_sz / SPA_MINBLOCKSIZE / (l2 / SPA_MAXBLOCKSIZE) *
# sizeof (l2arc_log_blk_phys_t)
# min restored size: l2 - (wr_sz + blk_overhead)
#
verify_runnable "global"
log_assert "Persistent L2ARC with an encrypted ZFS file system succeeds."
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 eval "echo $PASSPHRASE | zfs create -o encryption=on" \
"-o keyformat=passphrase $TESTPOOL/$TESTFS1"
log_must fio $FIO_SCRIPTS/mkfiles.fio
log_must fio $FIO_SCRIPTS/random_reads.fio
log_must zpool export $TESTPOOL
sleep 2
typeset l2_dh_log_blk=$(zdb -l $VDEV_CACHE | grep log_blk_count | \
awk '{print $2}')
typeset l2_rebuild_log_blk_start=$(get_arcstat l2_rebuild_log_blks)
log_must zpool import -d $VDIR $TESTPOOL
log_must eval "echo $PASSPHRASE | zfs mount -l $TESTPOOL/$TESTFS1"
sleep 2
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 "Persistent L2ARC with an encrypted ZFS file system succeeds."
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