#!/bin/bash # Copyright (C) 2010-2015 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 please SKIP_WITH_LVMLOCKD=1 SKIP_WITH_LVMPOLLD=1 . lib/inittest which mkfs.ext2 || skip aux lvmconf "activation/snapshot_autoextend_percent = 0" \ "activation/snapshot_autoextend_threshold = 100" aux prepare_dmeventd aux prepare_vg 2 mntdir="${PREFIX}mnt" lvcreate -aey -L8 -n base $vg mkfs.ext2 "$DM_DEV_DIR/$vg/base" lvcreate -s -L4 -n snap $vg/base lvchange --monitor y $vg/snap mkdir "$mntdir" # Use remount-ro to avoid logging kernel WARNING mount -o errors=remount-ro "$DM_DEV_DIR/mapper/$vg-snap" "$mntdir" test $(dmsetup info -c --noheadings -o open $vg-snap) -eq 1 cat /proc/mounts | grep "$mntdir" # overfill 4M snapshot (with metadata) not dd if=/dev/zero of="$mntdir/file$1" bs=1M count=4 conv=fdatasync # Should be nearly instant check of dmeventd for invalid snapshot. # Wait here for umount and open_count drops to 0 as it may # take a while to finalize umount operation (it might be already # removed from /proc/mounts, but still opened). for i in {1..100}; do sleep .1 test $(dmsetup info -c --noheadings -o open $vg-snap) -eq 0 && break done cat /proc/mounts | not grep "$mntdir" vgremove -f $vg