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 a regular volume with an implicit 39# reservation, setting the reservation on the volume to 'none' should allow 40# more data to be written to the filesystem. 41# 42# 43# STRATEGY: 44# 1) Create a regular non-sparse volume (which implicitly sets the reservation 45# property to a value equal to the volume size) 46# 2) Create a filesystem at the same level 47# 3) Fill up the filesystem 48# 4) Set the reservation on the volume to 'none' 49# 5) Verify can write more data to the filesystem 50# 51 52verify_runnable "global" 53 54log_assert "Setting volume reservation to 'none' allows more data to be " \ 55 "written to top level filesystem" 56 57function cleanup 58{ 59 datasetexists $TESTPOOL/$TESTVOL && \ 60 log_must zfs destroy $TESTPOOL/$TESTVOL 61 62 [[ -e $TESTDIR/$TESTFILE1 ]] && log_must rm -rf $TESTDIR/$TESTFILE1 63 [[ -e $TESTDIR/$TESTFILE2 ]] && log_must rm -rf $TESTDIR/$TESTFILE2 64} 65log_onexit cleanup 66 67space_avail=$(largest_volsize_from_pool $TESTPOOL) 68 69# 70# To make sure this test doesn't take too long to execute on 71# large pools, we calculate a volume size which when applied 72# to the volume will ensure we have RESV_FREE_SPACE 73# left free in the pool which we can quickly fill. 74# 75((resv_size_set = space_avail - RESV_FREE_SPACE)) 76resv_size_set=$(floor_volsize $resv_size_set) 77 78log_must zfs create -V $resv_size_set $TESTPOOL/$TESTVOL 79 80space_avail_still=`get_prop available $TESTPOOL` 81 82fill_size=$((space_avail_still + $RESV_TOLERANCE)) 83write_count=$((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 -c $write_count -d 0 88ret=$? 89if (($ret != $ENOSPC)); then 90 log_fail "Did not get ENOSPC as expected (got $ret)." 91fi 92 93log_must zfs set refreservation=none $TESTPOOL/$TESTVOL 94 95log_must file_write -o create -f $TESTDIR/$TESTFILE2 -b pagesize \ 96 -c 1000 -d 0 97 98log_pass "Setting top level volume reservation to 'none' allows more " \ 99 "data to be written to the top level filesystem" 100