1f38cb554SJohn Wren Kennedy#!/usr/bin/bash -p 2f38cb554SJohn Wren Kennedy# 3f38cb554SJohn Wren Kennedy# CDDL HEADER START 4f38cb554SJohn Wren Kennedy# 5f38cb554SJohn Wren Kennedy# The contents of this file are subject to the terms of the 6f38cb554SJohn Wren Kennedy# Common Development and Distribution License (the "License"). 7f38cb554SJohn Wren Kennedy# You may not use this file except in compliance with the License. 8f38cb554SJohn Wren Kennedy# 9f38cb554SJohn Wren Kennedy# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10f38cb554SJohn Wren Kennedy# or http://www.opensolaris.org/os/licensing. 11f38cb554SJohn Wren Kennedy# See the License for the specific language governing permissions 12f38cb554SJohn Wren Kennedy# and limitations under the License. 13f38cb554SJohn Wren Kennedy# 14f38cb554SJohn Wren Kennedy# When distributing Covered Code, include this CDDL HEADER in each 15f38cb554SJohn Wren Kennedy# file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16f38cb554SJohn Wren Kennedy# If applicable, add the following below this CDDL HEADER, with the 17f38cb554SJohn Wren Kennedy# fields enclosed by brackets "[]" replaced with your own identifying 18f38cb554SJohn Wren Kennedy# information: Portions Copyright [yyyy] [name of copyright owner] 19f38cb554SJohn Wren Kennedy# 20f38cb554SJohn Wren Kennedy# CDDL HEADER END 21f38cb554SJohn Wren Kennedy# 22f38cb554SJohn Wren Kennedy 23f38cb554SJohn Wren Kennedy# 24f38cb554SJohn Wren Kennedy# Copyright 2009 Sun Microsystems, Inc. All rights reserved. 25f38cb554SJohn Wren Kennedy# Use is subject to license terms. 26f38cb554SJohn Wren Kennedy# 27f38cb554SJohn Wren Kennedy 28f38cb554SJohn Wren Kennedy# 29*1d32ba66SJohn Wren Kennedy# Copyright (c) 2013, 2016 by Delphix. All rights reserved. 30f38cb554SJohn Wren Kennedy# 31f38cb554SJohn Wren Kennedy 32f38cb554SJohn Wren Kennedy. $STF_SUITE/include/libtest.shlib 33f38cb554SJohn Wren Kennedy. $STF_SUITE/tests/functional/reservation/reservation.shlib 34f38cb554SJohn Wren Kennedy 35f38cb554SJohn Wren Kennedy# 36f38cb554SJohn Wren Kennedy# DESCRIPTION: 37f38cb554SJohn Wren Kennedy# 38f38cb554SJohn Wren Kennedy# Setting a reservation reserves a defined minimum amount of space for 39f38cb554SJohn Wren Kennedy# a dataset, and prevents other datasets using that space. Verify that 40f38cb554SJohn Wren Kennedy# reducing the reservation on a filesystem allows other datasets in 41f38cb554SJohn Wren Kennedy# the pool to use that space. 42f38cb554SJohn Wren Kennedy# 43f38cb554SJohn Wren Kennedy# STRATEGY: 44f38cb554SJohn Wren Kennedy# 1) Create multiple filesystems 45f38cb554SJohn Wren Kennedy# 2) Set reservations on all bar one of the filesystems 46f38cb554SJohn Wren Kennedy# 3) Fill up the one non-reserved filesystem 47f38cb554SJohn Wren Kennedy# 4) Reduce one of the reservations and verify can write more 48f38cb554SJohn Wren Kennedy# data into the non-reserved filesystem 49f38cb554SJohn Wren Kennedy# 50f38cb554SJohn Wren Kennedy 51f38cb554SJohn Wren Kennedyverify_runnable "both" 52f38cb554SJohn Wren Kennedy 53f38cb554SJohn Wren Kennedylog_assert "Verify reducing reservation allows other datasets to use space" 54f38cb554SJohn Wren Kennedy 55f38cb554SJohn Wren Kennedyfunction cleanup 56f38cb554SJohn Wren Kennedy{ 57f38cb554SJohn Wren Kennedy typeset -i loop=0 58f38cb554SJohn Wren Kennedy while (($loop < $RESV_NUM_FS)); do 59f38cb554SJohn Wren Kennedy datasetexists $TESTPOOL/${TESTFS}$loop && \ 60*1d32ba66SJohn Wren Kennedy log_must zfs destroy -f $TESTPOOL/${TESTFS}$loop 61f38cb554SJohn Wren Kennedy 62*1d32ba66SJohn Wren Kennedy [[ -d ${TESTDIR}$loop ]] && log_must rm -r ${TESTDIR}$loop 63f38cb554SJohn Wren Kennedy 64f38cb554SJohn Wren Kennedy ((loop = loop + 1)) 65f38cb554SJohn Wren Kennedy done 66f38cb554SJohn Wren Kennedy} 67f38cb554SJohn Wren Kennedy 68f38cb554SJohn Wren Kennedylog_onexit cleanup 69f38cb554SJohn Wren Kennedy 70f38cb554SJohn Wren Kennedylog_must create_multiple_fs $RESV_NUM_FS $TESTPOOL/$TESTFS $TESTDIR 71f38cb554SJohn Wren Kennedy 72f38cb554SJohn Wren Kennedyspace_avail=`get_prop available $TESTPOOL` 73f38cb554SJohn Wren Kennedyspace_used=`get_prop used $TESTPOOL` 74f38cb554SJohn Wren Kennedy 75f38cb554SJohn Wren Kennedy# 76f38cb554SJohn Wren Kennedy# To make sure this test doesn't take too long to execute on 77f38cb554SJohn Wren Kennedy# large pools, we calculate a reservation setting which when 78f38cb554SJohn Wren Kennedy# applied to all bar one of the filesystems (RESV_NUM_FS-1) will 79f38cb554SJohn Wren Kennedy# ensure we have RESV_FREE_SPACE left free in the pool, which we will 80f38cb554SJohn Wren Kennedy# be able to quickly fill. 81f38cb554SJohn Wren Kennedy# 82f38cb554SJohn Wren Kennedyresv_space_avail=`expr $space_avail - $RESV_FREE_SPACE` 83f38cb554SJohn Wren Kennedynum_resv_fs=`expr $RESV_NUM_FS - 1` # Number of FS to which resv will be applied 84f38cb554SJohn Wren Kennedyresv_size_set=`expr $resv_space_avail / $num_resv_fs` 85f38cb554SJohn Wren Kennedy 86f38cb554SJohn Wren Kennedy# 87f38cb554SJohn Wren Kennedy# We set the reservations now, rather than when we created the filesystems 88f38cb554SJohn Wren Kennedy# to allow us to take into account space used by the filsystem metadata 89f38cb554SJohn Wren Kennedy# 90f38cb554SJohn Wren Kennedy# Note we don't set a reservation on the first filesystem we created, 91f38cb554SJohn Wren Kennedy# hence num=1 rather than zero below. 92f38cb554SJohn Wren Kennedy# 93f38cb554SJohn Wren Kennedytypeset -i num=1 94f38cb554SJohn Wren Kennedywhile (($num < $RESV_NUM_FS)); do 95*1d32ba66SJohn Wren Kennedy log_must zfs set reservation=$resv_size_set $TESTPOOL/$TESTFS$num 96f38cb554SJohn Wren Kennedy ((num = num + 1)) 97f38cb554SJohn Wren Kennedydone 98f38cb554SJohn Wren Kennedy 99f38cb554SJohn Wren Kennedyspace_avail_still=`get_prop available $TESTPOOL` 100f38cb554SJohn Wren Kennedy 101f38cb554SJohn Wren Kennedyfill_size=`expr $space_avail_still + $RESV_TOLERANCE` 102f38cb554SJohn Wren Kennedywrite_count=`expr $fill_size / $BLOCK_SIZE` 103f38cb554SJohn Wren Kennedy 104f38cb554SJohn Wren Kennedy# Now fill up the first filesystem (which doesn't have a reservation set 105f38cb554SJohn Wren Kennedy# and thus will use up whatever free space is left in the pool). 106f38cb554SJohn Wren Kennedynum=0 107f38cb554SJohn Wren Kennedylog_note "Writing to $TESTDIR$num/$TESTFILE1" 108f38cb554SJohn Wren Kennedy 109*1d32ba66SJohn Wren Kennedyfile_write -o create -f $TESTDIR$num/$TESTFILE1 -b $BLOCK_SIZE \ 110f38cb554SJohn Wren Kennedy -c $write_count -d 0 111f38cb554SJohn Wren Kennedyret=$? 112f38cb554SJohn Wren Kennedyif (($ret != $ENOSPC)); then 113f38cb554SJohn Wren Kennedy log_fail "Did not get ENOSPC as expected (got $ret)." 114f38cb554SJohn Wren Kennedyfi 115f38cb554SJohn Wren Kennedy 116f38cb554SJohn Wren Kennedy# Remove the reservation on one of the other filesystems and verify 117f38cb554SJohn Wren Kennedy# can write more data to the original non-reservation filesystem. 118f38cb554SJohn Wren Kennedynum=1 119*1d32ba66SJohn Wren Kennedylog_must zfs set reservation=none $TESTPOOL/${TESTFS}$num 120f38cb554SJohn Wren Kennedynum=0 121*1d32ba66SJohn Wren Kennedylog_must file_write -o create -f ${TESTDIR}$num/$TESTFILE2 -b pagesize \ 122f38cb554SJohn Wren Kennedy -c 1000 -d 0 123f38cb554SJohn Wren Kennedy 124f38cb554SJohn Wren Kennedylog_pass "reducing reservation allows other datasets to use space" 125