1#!/usr/bin/bash -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 http://www.opensolaris.org/os/licensing. 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 2009 Sun Microsystems, Inc. All rights reserved. 25# Use is subject to license terms. 26# 27 28# 29# Copyright (c) 2013, 2016 by Delphix. All rights reserved. 30# 31 32. $STF_SUITE/include/libtest.shlib 33. $STF_SUITE/tests/functional/reservation/reservation.shlib 34 35# 36# DESCRIPTION: 37# 38# In pool with a full filesystem and another filesystem with a reservation 39# setting the reservation on the second filesystem to 'none' should allow more 40# data to be written to the first filesystem. 41# 42# 43# STRATEGY: 44# 1) Create a filesystem as a dataset 45# 2) Create a filesystem at the same level 46# 3) Set a reservation on the dataset filesystem 47# 4) Fill up the filesystem 48# 5) Set the reservation on the dataset filesystem to 'none' 49# 6) Verify we can write more data to the first filesystem 50# 51 52verify_runnable "both" 53 54log_assert "Setting top level dataset reservation to 'none' allows more data " 55 "to be written to top level filesystem" 56 57function cleanup 58{ 59 log_must rm -rf $TESTDIR/$TESTFILE1 60 log_must rm -rf $TESTDIR/$TESTFILE2 61 log_must zfs destroy -f $TESTPOOL/$TESTFS1 62} 63 64log_onexit cleanup 65 66log_must zfs create $TESTPOOL/$TESTFS1 67 68space_avail=`get_prop available $TESTPOOL` 69 70# 71# To make sure this test doesn't take too long to execute on 72# large pools, we calculate a reservation setting which when 73# applied to the dataset will ensure we have RESV_FREE_SPACE 74# left free in the pool which we can quickly fill. 75# 76((resv_size_set = space_avail - RESV_FREE_SPACE)) 77 78log_must zfs set reservation=$resv_size_set $TESTPOOL/$TESTFS1 79 80space_avail_still=`get_prop available $TESTPOOL` 81 82fill_size=`expr $space_avail_still + $RESV_TOLERANCE` 83write_count=`expr $fill_size / $BLOCK_SIZE` 84 85# Now fill up the filesystem (which doesn't have a reservation set 86# and thus will use up whatever free space is left in the pool). 87file_write -o create -f $TESTDIR/$TESTFILE1 -b $BLOCK_SIZE \ 88 -c $write_count -d 0 89ret=$? 90if (($ret != $ENOSPC)); then 91 log_fail "Did not get ENOSPC as expected (got $ret)." 92fi 93 94log_must zfs set reservation=none $TESTPOOL/$TESTFS1 95 96log_must file_write -o create -f $TESTDIR/$TESTFILE2 -b pagesize \ 97 -c 1000 -d 0 98 99log_pass "Setting top level dataset reservation to 'none' allows more " \ 100 "data to be written to the top level filesystem" 101