functional/reservation/reservation_003_pos.sh

#!/usr/bin/bash -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.
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# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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#
# 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:
#
# Verify that it's possible to set a reservation on a filesystem,
# or volume multiple times, without resetting the reservation
# to none.
#
# STRATEGY:
# 1) Create a regular volume and a sparse volume
# 2) Get the space available in the pool
# 3) Set a reservation on the filesystem less than the space available.
# 4) Verify that the 'reservation' property for the filesystem has
# the correct value.
# 5) Repeat 2-4 for different reservation values
# 6) Repeat 3-5 for regular and sparse volume
#

verify_runnable "both"

log_assert "Verify it is possible to set reservations multiple times " \
    "on a filesystem regular and sparse volume"

function cleanup
{
    log_must zero_reservation $TESTPOOL/$TESTFS

    for obj in $OBJ_LIST; do
    datasetexists $obj && log_must zfs destroy -f $obj
    done
}

log_onexit cleanup


#
# Set a reservation $RESV_ITER times on a dataset and verify that
# the reservation is correctly set each time.
#
function multiple_resv { #dataset
    typeset -i i=0

    dataset=$1

    log_must zero_reservation $dataset
    space_avail=`get_prop available $TESTPOOL`

    ((resv_size = (space_avail - RESV_DELTA) / RESV_ITER))

    #
    # For regular (non-sparse) volumes the upper limit is determined
    # not by the space available in the pool but rather by the size
    # of the volume itself.
    #
    [[ $obj == $TESTPOOL/$TESTVOL ]] && \
        ((resv_size = (vol_set_size - RESV_DELTA) / RESV_ITER))

    resv_size_set=$resv_size

    while (($i < $RESV_ITER)); do

        ((i = i + 1))

        ((resv_size_set = resv_size * i))

        log_must zfs set reservation=$resv_size_set $dataset

        resv_size_get=`get_prop reservation $dataset`
        if [[ $resv_size_set != $resv_size_get ]]; then
            log_fail "Reservation not the expected value " \
                "($resv_size_set != $resv_size_get)"
        fi
    done

    log_must zero_reservation $dataset
}

space_avail=`get_prop available $TESTPOOL`

if ! is_global_zone ; then
    OBJ_LIST=""
else
    OBJ_LIST="$TESTPOOL/$TESTVOL $TESTPOOL/$TESTVOL2"

    ((vol_set_size = space_avail / 4))
    vol_set_size=$(floor_volsize $vol_set_size)
    ((sparse_vol_set_size = space_avail * 4))
    sparse_vol_set_size=$(floor_volsize $sparse_vol_set_size)


    log_must zfs create -V $vol_set_size $TESTPOOL/$TESTVOL
    log_must zfs set reservation=none $TESTPOOL/$TESTVOL
    log_must zfs create -s -V $sparse_vol_set_size $TESTPOOL/$TESTVOL2
fi

for obj in $TESTPOOL/$TESTFS $OBJ_LIST ; do
    multiple_resv $obj
done

log_pass "Multiple reservations successfully set on filesystem" \
    " and both volume types"