1#!/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. $STF_SUITE/tests/functional/nopwrite/nopwrite.shlib 20 21# 22# Description: 23# Verify that nopwrite still works for a dataset that becomes a clone via 24# promotion. 25# 26# Strategy: 27# 1. Create a clone suitable for nopwrite. 28# 2. Disable compression and checksum on the clone, and promote it. 29# 3. Overwrite the file in the clone (former origin fs) and verify it 30# consumes no additional space. 31# 32 33verify_runnable "global" 34origin="$TESTPOOL/$TESTFS" 35log_onexit cleanup 36 37function cleanup 38{ 39 datasetexists $origin && destroy_dataset $TESTPOOL/clone -R 40 log_must zfs create -o mountpoint=$TESTDIR $origin 41} 42 43log_assert "nopwrite works on a dataset that becomes a clone via promotion." 44 45log_must zfs set compress=on $origin 46log_must zfs set checksum=sha256 $origin 47dd if=/dev/urandom of=$TESTDIR/file bs=1024k count=$MEGS conv=notrunc \ 48 >/dev/null 2>&1 || log_fail "dd into $TESTDIR/file failed." 49zfs snapshot $origin@a || log_fail "zfs snap failed" 50log_must zfs clone $origin@a $TESTPOOL/clone 51log_must zfs set compress=off $TESTPOOL/clone 52log_must zfs set checksum=off $TESTPOOL/clone 53log_must zfs promote $TESTPOOL/clone 54dd if=/$TESTPOOL/clone/file of=/$TESTDIR/file bs=1024k count=$MEGS \ 55 conv=notrunc >/dev/null 2>&1 || log_fail "dd failed." 56log_must verify_nopwrite $TESTPOOL/clone $TESTPOOL/clone@a $origin 57 58log_pass "nopwrite works on a dataset that becomes a clone via promotion." 59