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lvm2/test/shell/fsadm-renamed.sh
David Teigland fc52e87f06 tests: add comments to fsadm-renamed
to explain the what and why of the steps that are
not obvious
2022-10-11 12:48:31 -05:00

139 lines
3.4 KiB
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#!/usr/bin/env bash
# Copyright (C) 2017 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
test_description='Exercise fsadm operation on renamed device'
SKIP_WITH_LVMPOLLD=1
. lib/inittest
aux prepare_vg 1 700
vg_lv=$vg/$lv1
vg_lv_ren=${vg_lv}_renamed
dev_vg_lv="$DM_DEV_DIR/$vg_lv"
dev_vg_lv_ren="$DM_DEV_DIR/$vg_lv_ren"
mount_dir="mnt"
mount_space_dir="mnt space dir"
mount_dolar_dir="mnt \$SPACE dir"
test ! -d "$mount_dir" && mkdir "$mount_dir"
test ! -d "$mount_space_dir" && mkdir "$mount_space_dir"
test ! -d "$mount_dolar_dir" && mkdir "$mount_dolar_dir"
cleanup_mounted_and_teardown()
{
umount "$mount_dir" || true
umount "$mount_space_dir" || true
umount "$mount_dolar_dir" || true
aux teardown
}
check_mounted()
{
mount | tee out
grep $vg out || {
# older versions of systemd sometimes umount volume by mistake
# skip further test when this case happens
systemctl --version | grep "systemd 222" && \
skip "System is running old racy systemd version."
}
}
# Test for block sizes != 1024 (rhbz #480022)
trap 'cleanup_mounted_and_teardown' EXIT
# Iterate over supported filesystems
for i in mkfs.ext3 mkfs.xfs mkfs.reiserfs
do
if not which "$i" ; then
echo "Skipping tests for missing $i"
continue
fi
lvcreate -n $lv1 -L300M $vg
case "$i" in
*ext3) MKFS_ARGS="-b1024 -j" ;;
*xfs) MKFS_ARGS="-l internal,size=64m -f" ;;
*reiserfs) MKFS_ARGS="-s 513 -f" ;;
esac
echo "$i"
"$i" $MKFS_ARGS "$dev_vg_lv"
# Adding couple udev wait ops as some older systemd
# might get confused and was 'randomly/racy' umounting
# devices just mounted.
#
# See for explanation:
# https://github.com/systemd/systemd/commit/628c89cc68ab96fce2de7ebba5933725d147aecc
# https://github.com/systemd/systemd/pull/2017
aux udev_wait
# mount /dev/test/lv1 on /mnt
mount "$dev_vg_lv" "$mount_dir"
aux udev_wait
# rename lv1 to lv1_renamed, now /dev/test/lv1_renamed is mounted on /mnt,
# but "df" and "mount" commands will still show /dev/test/lv1 mounted on /mnt.
lvrename $vg_lv $vg_lv_ren
check_mounted
# fails on renamed LV
# lvextend -r test/lv1_renamed succeeds in extending the LV (as lv1_renamed),
# but xfs_growfs /dev/test/lv1_renamed fails because it doesn't recognize
# that device is mounted, because the old lv name reported as being mounted.
fail lvresize -y -L+10M -r $vg_lv_ren
# fails on unknown mountpoint (FIXME: umount)
not umount "$dev_vg_lv"
# create a new LV with the previous name of the renamed lv
lvcreate -L300 -n $lv1 $vg
"$i" $MKFS_ARGS "$dev_vg_lv"
aux udev_wait
# mount the new lv on a dir with a similar name as the other
# now df will show
# /dev/mapper/test-lv1 ... /mnt
# /dev/mapper/test-lv1 ... /mnt $SPACE dir
mount "$dev_vg_lv" "$mount_dolar_dir"
check_mounted
# try to resize the LV that was renamed: lvextend -r test/lv1_renamed
# this succeeds in extending the LV (lv1_renamed), but xfs_growfs fails
# for the same reason as above, i.e. mount doesn't show the lv1_renamed
# device is mounted anywhere.
not lvresize -L+10M -r $vg_lv_ren
umount "$mount_dir"
lvresize -y -L+10M -r $vg_lv
aux udev_wait
umount "$mount_dolar_dir"
lvremove -ff $vg
done
vgremove -ff $vg