| #!/bin/ksh -p |
| # |
| # CDDL HEADER START |
| # |
| # The contents of this file are subject to the terms of the |
| # Common Development and Distribution License (the "License"). |
| # You may not use this file except in compliance with the License. |
| # |
| # You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE |
| # or http://www.opensolaris.org/os/licensing. |
| # See the License for the specific language governing permissions |
| # and limitations under the License. |
| # |
| # When distributing Covered Code, include this CDDL HEADER in each |
| # file and include the License file at usr/src/OPENSOLARIS.LICENSE. |
| # If applicable, add the following below this CDDL HEADER, with the |
| # fields enclosed by brackets "[]" replaced with your own identifying |
| # information: Portions Copyright [yyyy] [name of copyright owner] |
| # |
| # CDDL HEADER END |
| # |
| |
| # |
| # Copyright 2009 Sun Microsystems, Inc. All rights reserved. |
| # Use is subject to license terms. |
| # |
| |
| # |
| # Copyright (c) 2013, 2016 by Delphix. All rights reserved. |
| # |
| |
| . $STF_SUITE/include/libtest.shlib |
| . $STF_SUITE/tests/functional/reservation/reservation.shlib |
| |
| # |
| # DESCRIPTION: |
| # |
| # In pool with a full filesystem and a regular volume with an implicit |
| # reservation, setting the reservation on the volume to 'none' should allow |
| # more data to be written to the filesystem. |
| # |
| # |
| # STRATEGY: |
| # 1) Create a regular non-sparse volume (which implicitly sets the reservation |
| # property to a value equal to the volume size) |
| # 2) Create a filesystem at the same level |
| # 3) Fill up the filesystem |
| # 4) Set the reservation on the volume to 'none' |
| # 5) Verify can write more data to the filesystem |
| # |
| |
| verify_runnable "global" |
| |
| log_assert "Setting volume reservation to 'none' allows more data to be " \ |
| "written to top level filesystem" |
| |
| function cleanup |
| { |
| datasetexists $TESTPOOL/$TESTVOL && \ |
| log_must zfs destroy $TESTPOOL/$TESTVOL |
| |
| [[ -e $TESTDIR/$TESTFILE1 ]] && log_must rm -rf $TESTDIR/$TESTFILE1 |
| [[ -e $TESTDIR/$TESTFILE2 ]] && log_must rm -rf $TESTDIR/$TESTFILE2 |
| } |
| log_onexit cleanup |
| |
| space_avail=$(largest_volsize_from_pool $TESTPOOL) |
| |
| # |
| # To make sure this test doesn't take too long to execute on |
| # large pools, we calculate a volume size which when applied |
| # to the volume will ensure we have RESV_FREE_SPACE |
| # left free in the pool which we can quickly fill. |
| # |
| ((resv_size_set = space_avail - RESV_FREE_SPACE)) |
| resv_size_set=$(floor_volsize $resv_size_set) |
| |
| log_must zfs create -V $resv_size_set $TESTPOOL/$TESTVOL |
| |
| space_avail_still=`get_prop available $TESTPOOL` |
| |
| fill_size=$((space_avail_still + $RESV_TOLERANCE)) |
| write_count=$((fill_size / BLOCK_SIZE)) |
| |
| # Now fill up the filesystem (which doesn't have a reservation set |
| # and thus will use up whatever free space is left in the pool). |
| file_write -o create -f $TESTDIR/$TESTFILE1 -b $BLOCK_SIZE -c $write_count -d 0 |
| ret=$? |
| if (($ret != $ENOSPC)); then |
| log_fail "Did not get ENOSPC as expected (got $ret)." |
| fi |
| |
| log_must zfs set refreservation=none $TESTPOOL/$TESTVOL |
| |
| log_must file_write -o create -f $TESTDIR/$TESTFILE2 \ |
| -b $(getconf PAGESIZE) -c 1000 -d 0 |
| |
| log_pass "Setting top level volume reservation to 'none' allows more " \ |
| "data to be written to the top level filesystem" |