1#! /usr/local/bin/ksh93 -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# ident "@(#)reservation_015_pos.ksh 1.4 09/08/06 SMI" 28# 29 30. $STF_SUITE/include/libtest.kshlib 31. $STF_SUITE/tests/reservation/reservation.kshlib 32 33############################################################################### 34# 35# __stc_assertion_start 36# 37# ID: reservation_015_pos 38# 39# DESCRIPTION: 40# 41# In pool with a full filesystem and a regular volume with an implicit 42# reservation, setting the reservation on the volume to 'none' should allow 43# more data to be written to the filesystem. 44# 45# 46# STRATEGY: 47# 1) Create a regular non-sparse volume (which implicitly sets the reservation 48# property to a value equal to the volume size) 49# 2) Create a filesystem at the same level 50# 3) Fill up the filesystem 51# 4) Set the reservation on the volume to 'none' 52# 5) Verify can write more data to the filesystem 53# 54# TESTABILITY: explicit 55# 56# TEST_AUTOMATION_LEVEL: automated 57# 58# CODING_STATUS: COMPLETED (2005-07-19) 59# 60# __stc_assertion_end 61# 62################################################################################ 63 64verify_runnable "global" 65 66log_assert "Setting volume reservation to 'none' allows more data to" \ 67 " be written to top level filesystem" 68 69space_avail=`get_prop available $TESTPOOL` 70 71# 72# To make sure this test doesn't take too long to execute on 73# large pools, we calculate a volume size which when applied 74# to the volume will ensure we have RESV_FREE_SPACE 75# left free in the pool which we can quickly fill. 76# 77# For the volume itself, set a reservation to 95% of available 78# space to allow space for metadata. 79# 80(( resv_size_set = space_avail * 95 / 100 )) 81resv_size_set=$(floor_volsize $resv_size_set $BLOCK_SIZE) 82 83log_must $ZFS create -b $BLOCK_SIZE -V $resv_size_set $TESTPOOL/$TESTVOL 84 85# Create a secondary filesystem to soak up what's left to get 86# to RESV_FREE_SPACE for the pool. 87space_avail_still=`get_prop available $TESTPOOL` 88(( zfs_res = space_avail_still - RESV_FREE_SPACE )) 89log_must $ZFS create -o refreservation=$zfs_res $TESTPOOL/$TESTFS2 90 91space_avail_still=`get_prop available $TESTPOOL` 92 93fill_size=`expr $space_avail_still + $RESV_TOLERANCE` 94write_count=`expr $fill_size / $BLOCK_SIZE` 95 96# Now fill up the filesystem (which doesn't have a reservation set 97# and thus will use up whatever free space is left in the pool). 98$FILE_WRITE -o create -f $TESTDIR/$TESTFILE1 -b $BLOCK_SIZE \ 99 -c $write_count -d 0 100ret=$? 101 102if (( $ret != $ENOSPC )); then 103 log_fail "Did not get ENOSPC as expected (got $ret)." 104fi 105 106log_must $ZFS set refreservation=none $TESTPOOL/$TESTVOL 107 108log_must $FILE_WRITE -o create -f $TESTDIR/$TESTFILE2 -b $BLOCK_SIZE \ 109 -c 1000 -d 0 110 111log_pass "Setting top level volume reservation to 'none' allows more " \ 112 "data to be written to the top level filesystem" 113