1#!/bin/ksh -p 2# 3# CDDL HEADER START 4# 5# The contents of this file are subject to the terms of the 6# Common Development and Distribution License (the "License"). 7# You may not use this file except in compliance with the License. 8# 9# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10# or https://opensource.org/licenses/CDDL-1.0. 11# See the License for the specific language governing permissions 12# and limitations under the License. 13# 14# When distributing Covered Code, include this CDDL HEADER in each 15# file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16# If applicable, add the following below this CDDL HEADER, with the 17# fields enclosed by brackets "[]" replaced with your own identifying 18# information: Portions Copyright [yyyy] [name of copyright owner] 19# 20# CDDL HEADER END 21# 22 23# 24# Copyright (c) 2022 by Lawrence Livermore National Security, LLC. 25# 26 27. $STF_SUITE/include/libtest.shlib 28. $STF_SUITE/include/math.shlib 29. $STF_SUITE/tests/functional/zvol/zvol_common.shlib 30 31# 32# DESCRIPTION: 33# Verify we can TRIM a zvol 34# 35# STRATEGY: 36# 1. TRIM the entire zvol to remove data from older tests 37# 2. Create a 5MB data file 38# 3. Write the file to the zvol 39# 4. Observe 5MB of used space on the zvol 40# 5. TRIM the first 1MB and last 2MB of the 5MB block of data. 41# 6. Observe 2MB of used space on the zvol 42# 7. Verify the trimmed regions are zero'd on the zvol 43 44verify_runnable "global" 45 46if is_linux ; then 47 if [[ $(linux_version) -gt $(linux_version "6.2") ]]; then 48 log_unsupported "Disabled while issue #14872 is being worked" 49 fi 50 51 # Disabled for the CentOS 9 kernel 52 if [[ $(linux_version) -eq $(linux_version "5.14") ]]; then 53 log_unsupported "Disabled while issue #14872 is being worked" 54 fi 55 56 # We need '--force' here since the prior tests may leave a filesystem 57 # on the zvol, and blkdiscard will see that filesystem and print a 58 # warning unless you force it. 59 # 60 # Only blkdiscard >= v2.36 supports --force, so we need to 61 # check for it. 62 if blkdiscard --help | grep -q '\-\-force' ; then 63 trimcmd='blkdiscard --force' 64 else 65 trimcmd='blkdiscard' 66 fi 67else 68 # By default, FreeBSD 'trim' always does a dry-run. '-f' makes 69 # it perform the actual operation. 70 trimcmd='trim -f' 71fi 72 73if ! is_physical_device $DISKS; then 74 log_unsupported "This directory cannot be run on raw files." 75fi 76 77typeset datafile1="$(mktemp zvol_misc_flags1.XXXXXX)" 78typeset datafile2="$(mktemp zvol_misc_flags2.XXXXXX)" 79typeset zvolpath=${ZVOL_DEVDIR}/$TESTPOOL/$TESTVOL 80 81function cleanup 82{ 83 rm "$datafile1" "$datafile2" 84} 85 86function do_test { 87 # Wait for udev to create symlinks to our zvol 88 block_device_wait $zvolpath 89 90 # Create a data file 91 log_must dd if=/dev/urandom of="$datafile1" bs=1M count=5 92 93 # Write to zvol 94 log_must dd if=$datafile1 of=$zvolpath conv=fsync 95 sync_pool 96 97 # Record how much space we've used (should be 5MB, with 128k 98 # of tolerance). 99 before="$(get_prop refer $TESTPOOL/$TESTVOL)" 100 log_must within_tolerance $before 5242880 131072 101 102 # We currently have 5MB of random data on the zvol. 103 # Trim the first 1MB and also trim 2MB at offset 3MB. 104 log_must $trimcmd -l $((1 * 1048576)) $zvolpath 105 log_must $trimcmd -o $((3 * 1048576)) -l $((2 * 1048576)) $zvolpath 106 sync_pool 107 108 # After trimming 3MB, the zvol should have 2MB of data (with 128k of 109 # tolerance). 110 after="$(get_prop refer $TESTPOOL/$TESTVOL)" 111 log_must within_tolerance $after 2097152 131072 112 113 # Make the same holes in our test data 114 log_must dd if=/dev/zero of="$datafile1" bs=1M count=1 conv=notrunc 115 log_must dd if=/dev/zero of="$datafile1" bs=1M count=2 seek=3 conv=notrunc 116 117 # Extract data from our zvol 118 log_must dd if=$zvolpath of="$datafile2" bs=1M count=5 119 120 # Compare the data we expect with what's on our zvol. diff will return 121 # non-zero if they differ. 122 log_must diff $datafile1 $datafile2 123 124 log_must rm $datafile1 $datafile2 125} 126 127log_assert "Verify that a ZFS volume can be TRIMed" 128log_onexit cleanup 129 130log_must zfs set compression=off $TESTPOOL/$TESTVOL 131 132# Remove old data from previous tests 133log_must $trimcmd $zvolpath 134 135set_blk_mq 1 136log_must_busy zpool export $TESTPOOL 137log_must zpool import $TESTPOOL 138do_test 139 140set_blk_mq 0 141log_must_busy zpool export $TESTPOOL 142log_must zpool import $TESTPOOL 143do_test 144 145log_pass "ZFS volumes can be trimmed" 146