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) 2020 by Lawrence Livermore National Security, LLC. 25# Copyright (c) 2021 by The FreeBSD Foundation. 26# Copyright (c) 2022 by Delphix. All rights reserved. 27# 28 29. $STF_SUITE/include/libtest.shlib 30 31# 32# DESCRIPTION: 33# Test hole-punching functionality 34# 35# STRATEGY: 36# 1. Create a dense file 37# 2. Punch an assortment of holes in the file and verify the result. 38# 39# Note: We can't compare exact block numbers as reported by du, because 40# different backing stores may allocate different numbers of blocks for 41# the same amount of data. 42# 43 44verify_runnable "global" 45 46# 47# Prior to __FreeBSD_version 1400032 there are no mechanism to punch hole in a 48# file on FreeBSD. truncate -d support is required to call fspacectl(2) on 49# behalf of the script. 50# 51if is_freebsd; then 52 if [[ $(uname -K) -lt 1400032 ]]; then 53 log_unsupported "Requires fspacectl(2) support on FreeBSD" 54 fi 55 if truncate -d 2>&1 | grep "illegal option" > /dev/null; then 56 log_unsupported "Requires truncate(1) -d support on FreeBSD" 57 fi 58fi 59 60FILE=$TESTDIR/$TESTFILE0 61BLKSZ=$(get_prop recordsize $TESTPOOL) 62 63function cleanup 64{ 65 [[ -e $TESTDIR ]] && log_must rm -f $FILE 66} 67 68function get_reported_size 69{ 70 if ! [ -e "$FILE" ]; then 71 log_fail "$FILE does not exist" 72 fi 73 74 sync_pool $TESTPOOL >/dev/null 2>&1 75 du "$FILE" | awk '{print $1}' 76} 77 78function check_apparent_size 79{ 80 typeset expected_size=$1 81 82 apparent_size=$(stat_size "$FILE") 83 if [ "$apparent_size" != "$expected_size" ]; then 84 log_fail \ 85 "Incorrect apparent size: $apparent_size != $expected_size" 86 fi 87} 88 89log_assert "Ensure holes can be punched in files making them sparse" 90 91log_onexit cleanup 92 93# Create a dense file and check it is the correct size. 94log_must file_write -o create -f $FILE -b $BLKSZ -c 8 95full_size=$(get_reported_size) 96 97# Punch a hole for the first full block. The reported size should decrease. 98log_must punch_hole 0 $BLKSZ $FILE 99one_hole=$(get_reported_size) 100[[ $full_size -gt $one_hole ]] || log_fail \ 101 "One hole failure: $full_size -> $one_hole" 102 103# Partially punch a hole in the second block. The reported size should 104# remain constant. 105log_must punch_hole $BLKSZ $((BLKSZ / 2)) $FILE 106partial_hole=$(get_reported_size) 107[[ $one_hole -eq $partial_hole ]] || log_fail \ 108 "Partial hole failure: $one_hole -> $partial_hole" 109 110# Punch a hole which overlaps the third and fourth block. The reported size 111# should remain constant. 112log_must punch_hole $(((BLKSZ * 2) + (BLKSZ / 2))) $((BLKSZ)) $FILE 113overlap_hole=$(get_reported_size) 114[[ $one_hole -eq $overlap_hole ]] || log_fail \ 115 "Overlap hole failure: $one_hole -> $overlap_hole" 116 117# Punch a hole from the fifth block past the end of file. The reported size 118# should decrease, and the apparent file size should not change since 119# --keep-size is implied. 120apparent_size=$(stat_size $FILE) 121log_must punch_hole $((BLKSZ * 4)) $((BLKSZ * 10)) $FILE 122eof_hole=$(get_reported_size) 123[[ $overlap_hole -gt $eof_hole ]] || log_fail \ 124 "EOF hole failure: $overlap_hole -> $eof_hole" 125log_must check_apparent_size $apparent_size 126 127log_pass "Ensure holes can be punched in files making them sparse" 128