#!/bin/ksh # # 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. # # # Copyright (c) 2012, 2016, Delphix. All rights reserved. # Copyright (c) 2019, Kjeld Schouten-Lebbing. All Rights Reserved. # . $STF_SUITE/include/properties.shlib . $STF_SUITE/include/libtest.shlib . $STF_SUITE/tests/functional/nopwrite/nopwrite.shlib # # Description: # Verify that if the checksum on the origin and clone is sha256, any compression # algorithm enables nopwrite. # # Strategy: # 1. Create an origin dataset with compression and sha256 checksum. # 2. Write a 64M file into the origin dataset. # 3. For each of 4 randomly chosen compression types: # 3a. Create a snap and clone (inheriting the checksum property) of the origin. # 3b. Apply the compression property to the clone. # 3c. Write the same 64M of data into the file that exists in the clone. # 3d. Verify that no new space was consumed. # verify_runnable "global" origin="$TESTPOOL/$TESTFS" log_onexit cleanup function cleanup { datasetexists $origin && log_must zfs destroy -R $origin log_must zfs create -o mountpoint=$TESTDIR $origin } log_assert "nopwrite works with sha256 and any compression algorithm" log_must zfs set compress=on $origin log_must zfs set checksum=sha256 $origin dd if=/dev/urandom of=$TESTDIR/file bs=1024k count=$MEGS conv=notrunc \ >/dev/null 2>&1 || log_fail "initial dd failed." # Verify nop_write for all compression algorithms except "off" for i in "${compress_prop_vals[@]:1}"; do zfs snapshot $origin@a || log_fail "zfs snap failed" log_must zfs clone -o compress=$i $origin@a $origin/clone dd if=/$TESTDIR/file of=/$TESTDIR/clone/file bs=1024k count=$MEGS \ conv=notrunc >/dev/null 2>&1 || log_fail "dd failed." log_must verify_nopwrite $origin $origin@a $origin/clone zfs destroy -R $origin@a || log_fail "zfs destroy failed" done log_pass "nopwrite works with sha256 and any compression algorithm"