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2d48317d3a
Add code to check if resulting data or metadata remained over 95% and in such case invoke umount.
130 lines
3.1 KiB
Bash
130 lines
3.1 KiB
Bash
#!/bin/bash
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# Copyright (C) 2012-2016 Red Hat, Inc. All rights reserved.
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#
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# This copyrighted material is made available to anyone wishing to use,
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# modify, copy, or redistribute it subject to the terms and conditions
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# of the GNU General Public License v.2.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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# no automatic extensions, just umount
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SKIP_WITH_LVMLOCKD=1
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SKIP_WITH_LVMPOLLD=1
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export LVM_TEST_THIN_REPAIR_CMD=${LVM_TEST_THIN_REPAIR_CMD-/bin/false}
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. lib/inittest
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mntdir="${PREFIX}mnt with space"
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mntusedir="${PREFIX}mntuse"
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cleanup_mounted_and_teardown()
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{
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umount "$mntdir" 2>/dev/null || true
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umount "$mntusedir" 2>/dev/null || true
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vgremove -ff $vg
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aux teardown
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}
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is_lv_opened_()
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{
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test $(get lv_field "$1" lv_device_open --binary) = "1"
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}
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#
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# Main
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#
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which mkfs.ext4 || skip
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export MKE2FS_CONFIG="$TESTDIR/lib/mke2fs.conf"
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aux have_thin 1 0 0 || skip
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aux lvmconf "dmeventd/thin_command = \"$PWD/testcmd.sh\""
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# Simple implementation of umount when lvextend fails
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cat <<- EOF >testcmd.sh
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#!/bin/sh
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echo "Data: \$DMEVENTD_THIN_POOL_DATA"
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echo "Metadata: \$DMEVENTD_THIN_POOL_METADATA"
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$TESTDIR/lib/lvextend --use-policies \$1 || {
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umount "$mntdir" || true
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umount "$mntusedir" || true
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return 1
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}
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test \$($TESTDIR/lib/lvs -o selected -S "data_percent>95||metadata_percent>95" --noheadings \$1) -eq 0 || {
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umount "$mntdir" || true
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umount "$mntusedir" || true
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return 1
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}
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EOF
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chmod +x testcmd.sh
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# Show prepared script
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cat testcmd.sh
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aux prepare_dmeventd
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# Use autoextend percent 0 - so extension fails and triggers umount...
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aux lvmconf "activation/thin_pool_autoextend_percent = 0" \
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"activation/thin_pool_autoextend_threshold = 70"
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aux prepare_vg 2
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lvcreate -L8M -V8M -n $lv1 -T $vg/pool
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lvcreate -V8M -n $lv2 -T $vg/pool
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mkfs.ext4 "$DM_DEV_DIR/$vg/$lv1"
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mkfs.ext4 "$DM_DEV_DIR/$vg/$lv2"
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lvchange --monitor y $vg/pool
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mkdir "$mntdir" "$mntusedir"
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trap 'cleanup_mounted_and_teardown' EXIT
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mount "$DM_DEV_DIR/mapper/$vg-$lv1" "$mntdir"
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mount "$DM_DEV_DIR/mapper/$vg-$lv2" "$mntusedir"
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# Check both LVs are opened (~mounted)
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is_lv_opened_ "$vg/$lv1"
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is_lv_opened_ "$vg/$lv2"
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touch "$mntusedir/file$$"
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sync
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# Running 'keeper' process sleep holds the block device still in use
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sleep 60 < "$mntusedir/file$$" >/dev/null 2>&1 &
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PID_SLEEP=$!
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lvs -a $vg
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# Fill pool above 95% (to cause 'forced lazy umount)
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dd if=/dev/zero of="$mntdir/file$$" bs=256K count=20 conv=fdatasync
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lvs -a $vg
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# Could loop here for a few secs so dmeventd can do some work
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# In the worst case check only happens every 10 seconds :(
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# With low water mark it quickly discovers overflow and umounts $vg/$lv1
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for i in $(seq 1 12) ; do
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is_lv_opened_ "$vg/$lv1" || break
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test $i -lt 12 || die "$mntdir should have been unmounted by dmeventd!"
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sleep 1
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done
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lvs -a $vg
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is_lv_opened_ "$vg/$lv2" || \
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die "$mntusedir is not mounted here (sleep already expired??)"
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# Kill device holding process
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kill $PID_SLEEP
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wait
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not is_lv_opened_ "$vg/$lv2" || {
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mount
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die "$mntusedir should have been unmounted by dmeventd!"
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}
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