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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) 2019 by Tim Chase. All rights reserved.
# Copyright (c) 2019 Lawrence Livermore National Security, LLC.
#
. $STF_SUITE/include/libtest.shlib
. $STF_SUITE/tests/functional/trim/trim.kshlib
. $STF_SUITE/tests/functional/trim/trim.cfg
#
# DESCRIPTION:
# Check various pool geometries stripe, mirror, raidz
#
# STRATEGY:
# 1. Create a pool on file vdevs to trim.
# 2. Fill the pool to a known percentage of capacity.
# 3. Verify the vdevs contain 75% or more allocated blocks.
# 4. Remove all files making it possible to trim the entire pool.
# 5. Manually trim the pool.
# 6. Wait for trim to issue trim IOs for the free blocks.
# 7. Verify the disks contain 30% or less allocated blocks.
# 8. Repeat for test for striped, mirrored, and RAIDZ pools.
verify_runnable "global"
log_assert "Run 'zpool trim' verify pool disks were trimmed"
function cleanup
{
if poolexists $TESTPOOL; then
destroy_pool $TESTPOOL
fi
log_must rm -f $TRIM_VDEVS
log_must set_tunable64 TRIM_EXTENT_BYTES_MIN $trim_extent_bytes_min
log_must set_tunable64 TRIM_TXG_BATCH $trim_txg_batch
log_must set_tunable64 VDEV_MIN_MS_COUNT $vdev_min_ms_count
}
log_onexit cleanup
# Minimum trim size is decreased to verify all trim sizes.
typeset trim_extent_bytes_min=$(get_tunable TRIM_EXTENT_BYTES_MIN)
log_must set_tunable64 TRIM_EXTENT_BYTES_MIN 4096
# Reduced TRIM_TXG_BATCH to make trimming more frequent.
typeset trim_txg_batch=$(get_tunable TRIM_TXG_BATCH)
log_must set_tunable64 TRIM_TXG_BATCH 8
# Increased metaslabs to better simulate larger more realistic devices.
typeset vdev_min_ms_count=$(get_tunable VDEV_MIN_MS_COUNT)
log_must set_tunable64 VDEV_MIN_MS_COUNT 32
typeset VDEV_MAX_MB=$(( floor(4 * MINVDEVSIZE * 0.75 / 1024 / 1024) ))
typeset VDEV_MIN_MB=$(( floor(4 * MINVDEVSIZE * 0.30 / 1024 / 1024) ))
for type in "" "mirror" "raidz2"; do
if [[ "$type" = "" ]]; then
VDEVS="$TRIM_VDEV1"
elif [[ "$type" = "mirror" ]]; then
VDEVS="$TRIM_VDEV1 $TRIM_VDEV2"
else
VDEVS="$TRIM_VDEV1 $TRIM_VDEV2 $TRIM_VDEV3"
fi
log_must truncate -s $((4 * MINVDEVSIZE)) $VDEVS
log_must zpool create -f $TESTPOOL $type $VDEVS
typeset availspace=$(get_prop available $TESTPOOL)
typeset fill_mb=$(( floor(availspace * 0.90 / 1024 / 1024) ))
# Fill the pool, verify the vdevs are no longer sparse.
file_write -o create -f /$TESTPOOL/file -b 1048576 -c $fill_mb -d R
verify_vdevs "-ge" "$VDEV_MAX_MB" $VDEVS
# Remove the file, issue trim, verify the vdevs are now sparse.
log_must rm /$TESTPOOL/file
log_must timeout 120 zpool trim -w $TESTPOOL
verify_vdevs "-le" "$VDEV_MIN_MB" $VDEVS
log_must zpool destroy $TESTPOOL
log_must rm -f $VDEVS
done
log_pass "Manual trim successfully shrunk vdevs"
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