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
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.
15 # Copyright (c) 2012, 2016 by Delphix. All rights reserved.
18 . $STF_SUITE/include/libtest.shlib
19 . $STF_SUITE/tests/functional/nopwrite/nopwrite.shlib
23 # Verify that nopwrite works regardless of recsize property setting.
26 # 1. Create an origin fs that's suitable to make nopwrite clones.
27 # 2. For each possible recsize, create a clone that inherits the compress and
28 # checksum, and verify overwriting the origin file consumes no new space.
31 verify_runnable "global"
32 origin="$TESTPOOL/$TESTFS"
37 datasetexists $origin && log_must zfs destroy -R $origin
38 log_must zfs create -o mountpoint=$TESTDIR $origin
41 log_assert "nopwrite updates file metadata correctly"
43 log_must zfs set compress=on $origin
44 log_must zfs set checksum=sha256 $origin
45 dd if=/dev/urandom of=$TESTDIR/file bs=1024k count=$MEGS conv=notrunc \
46 >/dev/null 2>&1 || log_fail "dd into $TESTDIR/file failed."
47 zfs snapshot $origin@a || log_fail "zfs snap failed"
48 log_must zfs clone $origin@a $origin/clone
50 for rs in 512 1024 2048 4096 8192 16384 32768 65536 131072 ; do
51 log_must zfs set recsize=$rs $origin/clone
52 dd if=/$TESTDIR/file of=/$TESTDIR/clone/file bs=1024k count=$MEGS \
53 conv=notrunc >/dev/null 2>&1 || log_fail "dd failed."
54 log_must verify_nopwrite $origin $origin@a $origin/clone
57 log_pass "nopwrite updates file metadata correctly"