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#!/usr/bin/env bash
# Copyright (C) 2012-2016 Red Hat, Inc. All rights reserved.
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions
# of the GNU General Public License v.2.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
# no automatic extensions, just umount
SKIP_WITH_LVMPOLLD=1
export LVM_TEST_THIN_REPAIR_CMD=${LVM_TEST_THIN_REPAIR_CMD-/bin/false}
. lib/inittest
mntdir="${PREFIX}mnt with space"
mntusedir="${PREFIX}mntuse"
cleanup_mounted_and_teardown()
{
umount "$mntdir" 2>/dev/null || true
umount "$mntusedir" 2>/dev/null || true
vgremove -ff $vg
aux teardown
}
is_lv_opened_()
{
test "$(get lv_field "$1" lv_device_open --binary)" = 1
}
#
# Main
#
which mkfs.ext4 || skip
export MKE2FS_CONFIG="$TESTDIR/lib/mke2fs.conf"
aux have_thin 1 0 0 || skip
# Simple implementation of umount when lvextend fails
cat <<- EOF >testcmd.sh
#!/bin/sh
echo "Data: \$DMEVENTD_THIN_POOL_DATA"
echo "Metadata: \$DMEVENTD_THIN_POOL_METADATA"
"$TESTDIR/lib/lvextend" --use-policies \$1 || {
umount "$mntdir" || true
umount "$mntusedir" || true
return 0
}
test "\$($TESTDIR/lib/lvs -o selected -S "data_percent>95||metadata_percent>95" --noheadings \$1)" -eq 0 || {
umount "$mntdir" || true
umount "$mntusedir" || true
return 0
}
EOF
chmod +x testcmd.sh
# Show prepared script
cat testcmd.sh
# Use autoextend percent 0 - so extension fails and triggers umount...
aux lvmconf "activation/thin_pool_autoextend_percent = 0" \
"activation/thin_pool_autoextend_threshold = 70" \
"dmeventd/thin_command = \"/$PWD/testcmd.sh\""
aux prepare_dmeventd
aux prepare_vg 2
lvcreate -L8M -V8M -n $lv1 -T $vg/pool
lvcreate -V8M -n $lv2 -T $vg/pool
mkfs.ext4 "$DM_DEV_DIR/$vg/$lv1"
mkfs.ext4 "$DM_DEV_DIR/$vg/$lv2"
lvchange --monitor y $vg/pool
mkdir "$mntdir" "$mntusedir"
trap 'cleanup_mounted_and_teardown' EXIT
mount "$DM_DEV_DIR/$vg/$lv1" "$mntdir"
mount "$DM_DEV_DIR/$vg/$lv2" "$mntusedir"
# Check both LVs are opened (~mounted)
is_lv_opened_ "$vg/$lv1"
is_lv_opened_ "$vg/$lv2"
touch "$mntusedir/file$$"
sync
# Running 'keeper' process sleep holds the block device still in use
sleep 60 < "$mntusedir/file$$" >/dev/null 2>&1 &
PID_SLEEP=$!
lvs -a $vg
# Fill pool above 95% (to cause 'forced lazy umount)
dd if=/dev/zero of="$mntdir/file$$" bs=256K count=20 conv=fdatasync
lvs -a $vg
# Could loop here for a few secs so dmeventd can do some work
# In the worst case check only happens every 10 seconds :(
# With low water mark it quickly discovers overflow and umounts $vg/$lv1
for i in $(seq 1 12) ; do
is_lv_opened_ "$vg/$lv1" || break
test $i -lt 12 || die "$mntdir should have been unmounted by dmeventd!"
sleep 1
done
lvs -a $vg
is_lv_opened_ "$vg/$lv2" || \
die "$mntusedir is not mounted here (sleep already expired??)"
# Kill device holding process
kill $PID_SLEEP
wait
not is_lv_opened_ "$vg/$lv2" || {
mount
die "$mntusedir should have been unmounted by dmeventd!"
}
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