1#!/usr/bin/ksh
2
3#
4# This file and its contents are supplied under the terms of the
5# Common Development and Distribution License ("CDDL"), version 1.0.
6# You may only use this file in accordance with the terms of version
7# 1.0 of the CDDL.
8#
9# A full copy of the text of the CDDL should have accompanied this
10# source.  A copy of the CDDL is also available via the Internet at
11# http://www.illumos.org/license/CDDL.
12#
13
14#
15# Copyright (c) 2012, 2016 by Delphix. All rights reserved.
16#
17
18. $STF_SUITE/include/libtest.shlib
19. $STF_SUITE/tests/functional/nopwrite/nopwrite.shlib
20
21#
22# Description:
23# Verify that nopwrite works regardless of recsize property setting.
24#
25# Strategy:
26# 1. Create an origin fs that's suitable to make nopwrite clones.
27# 2. For each possible recsize, create a clone that inherits the compress and
28# checksum, and verify overwriting the origin file consumes no new space.
29#
30
31verify_runnable "global"
32origin="$TESTPOOL/$TESTFS"
33log_onexit cleanup
34
35function cleanup
36{
37	datasetexists $origin && log_must zfs destroy -R $origin
38	log_must zfs create -o mountpoint=$TESTDIR $origin
39}
40
41log_assert "nopwrite updates file metadata correctly"
42
43log_must zfs set compress=on $origin
44log_must zfs set checksum=sha256 $origin
45dd if=/dev/urandom of=$TESTDIR/file bs=1024k count=$MEGS conv=notrunc \
46    >/dev/null 2>&1 || log_fail "dd into $TESTDIR/file failed."
47zfs snapshot $origin@a || log_fail "zfs snap failed"
48log_must zfs clone $origin@a $origin/clone
49
50for rs in 512 1024 2048 4096 8192 16384 32768 65536 131072 ; do
51	log_must zfs set recsize=$rs $origin/clone
52	dd if=/$TESTDIR/file of=/$TESTDIR/clone/file bs=1024k count=$MEGS \
53	    conv=notrunc >/tmp/null 2>&1 || log_fail "dd failed."
54	log_must verify_nopwrite $origin $origin@a $origin/clone
55done
56
57log_pass "nopwrite updates file metadata correctly"
58