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a512ea6a6a
lvm2/test/lib/aux.sh
Zdenek Kabelac fb471a372d tests: remove also 3.14 fc21 kernels
2014-03-26 00:04:59 +01:00

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#!/usr/bin/env bash
# Copyright (C) 2011-2012 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
. lib/utils
run_valgrind() {
# Execute script which may use $TESTNAME for creating individual
# log files for each execute command
exec "${VALGRIND:-valg}" "$@"
}
expect_failure() {
echo "TEST EXPECT FAILURE"
}
prepare_clvmd() {
rm -f debug.log
test "${LVM_TEST_LOCKING:-0}" -ne 3 && return # not needed
if pgrep clvmd ; then
echo "Cannot use fake cluster locking with real clvmd ($(pgrep clvmd)) running."
skip
fi
# skip if we don't have our own clvmd...
(which clvmd 2>/dev/null | grep "$abs_builddir") || skip
# lvs is executed from clvmd - use our version
export LVM_BINARY=$(which lvm)
# skip if singlenode is not compiled in
(clvmd --help 2>&1 | grep "Available cluster managers" | grep "singlenode") || skip
# lvmconf "activation/monitoring = 1"
local run_valgrind=
test "${LVM_VALGRIND_CLVMD:-0}" -eq 0 || run_valgrind="run_valgrind"
rm -f "$CLVMD_PIDFILE"
$run_valgrind lib/clvmd -Isinglenode -d 1 -f &
echo $! > LOCAL_CLVMD
for i in $(seq 1 100) ; do
test $i -eq 100 && die "Startup of clvmd is too slow."
test -e "$CLVMD_PIDFILE" && break
sleep .2
done
}
prepare_dmeventd() {
rm -f debug.log
if pgrep dmeventd ; then
echo "Cannot test dmeventd with real dmeventd ($(pgrep dmeventd)) running."
skip
fi
# skip if we don't have our own dmeventd...
(which dmeventd 2>/dev/null | grep "$abs_builddir") || skip
lvmconf "activation/monitoring = 1"
local run_valgrind=
test "${LVM_VALGRIND_DMEVENTD:-0}" -eq 0 || run_valgrind="run_valgrind"
$run_valgrind dmeventd -f "$@" &
echo $! > LOCAL_DMEVENTD
# FIXME wait for pipe in /var/run instead
for i in $(seq 1 100) ; do
test $i -eq 100 && die "Startup of dmeventd is too slow."
test -e "${DMEVENTD_PIDFILE}" && break
sleep .2
done
echo ok
}
prepare_lvmetad() {
rm -f debug.log
# skip if we don't have our own lvmetad...
(which lvmetad 2>/dev/null | grep "$abs_builddir") || skip
lvmconf "global/use_lvmetad = 1"
lvmconf "devices/md_component_detection = 0"
local run_valgrind=
test "${LVM_VALGRIND_LVMETAD:-0}" -eq 0 || run_valgrind="run_valgrind"
echo "preparing lvmetad..."
$run_valgrind lvmetad -f "$@" -s "$TESTDIR/lvmetad.socket" -l wire,debug &
echo $! > LOCAL_LVMETAD
while ! test -e "$TESTDIR/lvmetad.socket"; do echo -n .; sleep .1; done # wait for the socket
echo ok
}
lvmetad_talk() {
local use=nc
if type -p socat >& /dev/null; then
use=socat
elif echo | not nc -U "$TESTDIR/lvmetad.socket" ; then
echo "WARNING: Neither socat nor nc -U seems to be available." 1>&2
echo "# failed to contact lvmetad"
return 1
fi
if test "$use" = nc ; then
nc -U "$TESTDIR/lvmetad.socket"
else
socat "unix-connect:$TESTDIR/lvmetad.socket" -
fi | tee -a lvmetad-talk.txt
}
lvmetad_dump() {
(echo 'request="dump"'; echo '##') | lvmetad_talk "$@"
}
notify_lvmetad() {
if test -e LOCAL_LVMETAD; then
pvscan --cache "$@" || true
fi
}
teardown_devs_prefixed() {
local prefix=$1
local stray=${2:-0}
local IFS=$IFS_NL
local dm
# Resume suspended devices first
for dm in $(dm_info suspended,name | grep "^Suspended:.*$prefix"); do
echo "dmsetup resume \"${dm#Suspended:}\""
dmsetup clear "${dm#Suspended:}"
dmsetup resume "${dm#Suspended:}" &
done
wait
local mounts=( $(grep "$prefix" /proc/mounts | cut -d' ' -f1) )
if test ${#mounts[@]} -gt 0; then
test "$stray" -eq 0 || echo "Removing stray mounted devices containing $prefix: ${mounts[@]}"
if umount -fl "${mounts[@]}"; then
udev_wait
fi
fi
# Remove devices, start with closed (sorted by open count)
local remfail=no
local need_udev_wait=0
init_udev_transaction
for dm in $(dm_info name --sort open | grep "$prefix"); do
dmsetup remove --mangle none "$dm" &>/dev/null || remfail=yes
need_udev_wait=1
done
finish_udev_transaction
test $need_udev_wait -eq 0 || udev_wait
if test $remfail = yes; then
local num_devs
local num_remaining_devs=999
while num_devs=$(dm_table | grep "$prefix" | wc -l) && \
test $num_devs -lt $num_remaining_devs -a $num_devs -ne 0; do
test "$stray" -eq 0 || echo "Removing $num_devs stray mapped devices with names beginning with $prefix: "
for dm in $(dm_info name --sort open | grep "$prefix") ; do
dmsetup remove --mangle none -f "$dm" || true
done
num_remaining_devs=$num_devs
done
fi
}
teardown_devs() {
# Delete any remaining dm/udev semaphores
teardown_udev_cookies
test -z "$PREFIX" || {
rm -rf "$TESTDIR/dev/$PREFIX"*
teardown_devs_prefixed "$PREFIX"
}
# NOTE: SCSI_DEBUG_DEV test must come before the LOOP test because
# prepare_scsi_debug_dev() also sets LOOP to short-circuit prepare_loop()
if test -f SCSI_DEBUG_DEV; then
test "${LVM_TEST_PARALLEL:-0}" -eq 1 || modprobe -r scsi_debug
else
test ! -f LOOP || losetup -d $(cat LOOP) || true
test ! -f LOOPFILE || rm -f $(cat LOOPFILE)
fi
rm -f DEVICES # devs is set in prepare_devs()
rm -f LOOP
# Attempt to remove any loop devices that failed to get torn down if earlier tests aborted
test "${LVM_TEST_PARALLEL:-0}" -eq 1 -o -z "$COMMON_PREFIX" || {
teardown_devs_prefixed "$COMMON_PREFIX" 1
local stray_loops=( $(losetup -a | grep "$COMMON_PREFIX" | cut -d: -f1) )
test ${#stray_loops[@]} -eq 0 || {
echo "Removing stray loop devices containing $COMMON_PREFIX: ${stray_loops[@]}"
for i in "${stray_loops[@]}" ; do losetup -d $i ; done
}
}
}
kill_sleep_kill_() {
if test -s "$1" ; then
if kill -TERM "$(cat $1)" ; then
if test "$2" -eq 0 ; then sleep .1 ; else sleep 1 ; fi
kill -KILL "$(cat $1)" 2>/dev/null || true
fi
fi
}
teardown() {
echo -n "## teardown..."
kill_sleep_kill_ LOCAL_LVMETAD ${LVM_VALGRIND_LVMETAD:-0}
dm_table | not egrep -q "$vg|$vg1|$vg2|$vg3|$vg4" || {
# Avoid activation of dmeventd if there is no pid
cfg=$(test -s LOCAL_DMEVENTD || echo "--config activation{monitoring=0}")
vgremove -ff $cfg \
$vg $vg1 $vg2 $vg3 $vg4 &>/dev/null || rm -f debug.log
}
kill_sleep_kill_ LOCAL_CLVMD ${LVM_VALGRIND_CLVMD:-0}
echo -n .
kill_sleep_kill_ LOCAL_DMEVENTD ${LVM_VALGRIND_DMEVENTD:-0}
echo -n .
test -d "$DM_DEV_DIR/mapper" && teardown_devs
echo -n .
test -n "$TESTDIR" && {
cd "$TESTOLDPWD"
rm -rf "$TESTDIR" || echo BLA
}
echo "ok"
test "${LVM_TEST_PARALLEL:-0}" -eq 1 -o -n "$RUNNING_DMEVENTD" || not pgrep dmeventd #&>/dev/null
}
prepare_loop() {
local size=${1=32}
local i
local slash
test -f LOOP && LOOP=$(cat LOOP)
echo -n "## preparing loop device..."
# skip if prepare_scsi_debug_dev() was used
if test -f SCSI_DEBUG_DEV -a -f LOOP ; then
echo "(skipped)"
return 0
fi
test ! -e LOOP
test -n "$DM_DEV_DIR"
for i in 0 1 2 3 4 5 6 7; do
test -e "$DM_DEV_DIR/loop$i" || mknod "$DM_DEV_DIR/loop$i" b 7 $i
done
echo -n .
local LOOPFILE="$PWD/test.img"
dd if=/dev/zero of="$LOOPFILE" bs=$((1024*1024)) count=0 seek=$(($size-1)) 2> /dev/null
if LOOP=$(losetup -s -f "$LOOPFILE" 2>/dev/null); then
:
elif LOOP=$(losetup -f) && losetup "$LOOP" "$LOOPFILE"; then
# no -s support
:
else
# no -f support
# Iterate through $DM_DEV_DIR/loop{,/}{0,1,2,3,4,5,6,7}
for slash in '' /; do
for i in 0 1 2 3 4 5 6 7; do
local dev="$DM_DEV_DIR/loop$slash$i"
! losetup "$dev" >/dev/null 2>&1 || continue
# got a free
losetup "$dev" "$LOOPFILE"
LOOP=$dev
break
done
test -z "$LOOP" || break
done
fi
test -n "$LOOP" # confirm or fail
echo "$LOOP" > LOOP
echo "ok ($LOOP)"
}
# A drop-in replacement for prepare_loop() that uses scsi_debug to create
# a ramdisk-based SCSI device upon which all LVM devices will be created
# - scripts must take care not to use a DEV_SIZE that will enduce OOM-killer
prepare_scsi_debug_dev() {
local DEV_SIZE=$1
local SCSI_DEBUG_PARAMS=${@:2}
test -f "SCSI_DEBUG_DEV" && return 0
test -z "$LOOP"
test -n "$DM_DEV_DIR"
# Skip test if awk isn't available (required for get_sd_devs_)
which awk || skip
# Skip test if scsi_debug module is unavailable or is already in use
modprobe --dry-run scsi_debug || skip
lsmod | grep -q scsi_debug && skip
# Create the scsi_debug device and determine the new scsi device's name
# NOTE: it will _never_ make sense to pass num_tgts param;
# last param wins.. so num_tgts=1 is imposed
modprobe scsi_debug dev_size_mb=$DEV_SIZE $SCSI_DEBUG_PARAMS num_tgts=1 || skip
sleep 2 # allow for async Linux SCSI device registration
local DEBUG_DEV="/dev/$(grep -H scsi_debug /sys/block/*/device/model | cut -f4 -d /)"
test -b "$DEBUG_DEV" || return 1 # should not happen
# Create symlink to scsi_debug device in $DM_DEV_DIR
SCSI_DEBUG_DEV="$DM_DEV_DIR/$(basename $DEBUG_DEV)"
echo "$SCSI_DEBUG_DEV" > SCSI_DEBUG_DEV
echo "$SCSI_DEBUG_DEV" > LOOP
# Setting $LOOP provides means for prepare_devs() override
test "$LVM_TEST_DEVDIR" != "/dev" && ln -snf "$DEBUG_DEV" "$SCSI_DEBUG_DEV"
}
cleanup_scsi_debug_dev() {
teardown_devs
rm -f SCSI_DEBUG_DEV LOOP
}
prepare_devs() {
local n=${1:-3}
local devsize=${2:-34}
local pvname=${3:-pv}
local loopsz
prepare_loop $(($n*$devsize))
echo -n "## preparing $n devices..."
if ! loopsz=$(blockdev --getsz "$LOOP" 2>/dev/null); then
loopsz=$(blockdev --getsize "$LOOP" 2>/dev/null)
fi
local size=$(($loopsz/$n))
devs=
init_udev_transaction
for i in $(seq 1 $n); do
local name="${PREFIX}$pvname$i"
local dev="$DM_DEV_DIR/mapper/$name"
devs="$devs $dev"
echo 0 $size linear "$LOOP" $((($i-1)*$size)) > "$name.table"
dmsetup create -u "TEST-$name" "$name" "$name.table"
done
finish_udev_transaction
#for i in `seq 1 $n`; do
# local name="${PREFIX}$pvname$i"
# dmsetup info -c $name
#done
#for i in `seq 1 $n`; do
# local name="${PREFIX}$pvname$i"
# dmsetup table $name
#done
echo $devs > DEVICES
echo "ok"
}
# Replace linear PV device with its 'delayed' version
# Could be used to more deterministicaly hit some problems.
# Parameters: {device path} [read delay ms] [write delay ms]
# Original device is restored when both delay params are 0 (or missing).
# i.e. delay_dev "$dev1" 0 200
delay_dev() {
target_at_least dm-delay 1 2 0 || skip
local name=$(echo "$1" | sed -e 's,.*/,,')
local read_ms=${2:-0}
local write_ms=${3:-0}
local pos
local size
local type
local pvdev
local offset
read pos size type pvdev offset < "$name.table"
init_udev_transaction
if test $read_ms -ne 0 -o $write_ms -ne 0 ; then
echo "0 $size delay $pvdev $offset $read_ms $pvdev $offset $write_ms" | \
dmsetup load "$name"
else
dmsetup load "$name" "$name.table"
fi
dmsetup resume "$name"
finish_udev_transaction
}
disable_dev() {
local dev
udev_wait
init_udev_transaction
for dev in "$@"; do
maj=$(($(stat -L --printf=0x%t "$dev")))
min=$(($(stat -L --printf=0x%T "$dev")))
echo "Disabling device $dev ($maj:$min)"
dmsetup remove -f "$dev" 2>/dev/null || true
notify_lvmetad --major "$maj" --minor "$min"
done
finish_udev_transaction
}
enable_dev() {
local dev
rm -f debug.log
init_udev_transaction
for dev in "$@"; do
local name=$(echo "$dev" | sed -e 's,.*/,,')
dmsetup create -u "TEST-$name" "$name" "$name.table" 2>/dev/null || \
dmsetup load "$name" "$name.table"
# using device name (since device path does not exists yes with udev)
dmsetup resume "$name"
notify_lvmetad "$dev"
done
finish_udev_transaction
}
#
# Convert device to device with errors
# Takes the list of pairs of error segment from:len
# Original device table is replace with multiple lines
# i.e. error_dev "$dev1" 8:32 96:8
error_dev() {
local dev=$1
local name=$(echo "$dev" | sed -e 's,.*/,,')
local fromlen
local pos
local size
local type
local pvdev
local offset
read pos size type pvdev offset < $name.table
shift
rm -f $name.errtable
for fromlen in "$@"; do
from=${fromlen%%:*}
len=${fromlen##*:}
diff=$(($from - $pos))
if test $diff -gt 0 ; then
echo "$pos $diff $type $pvdev $(($pos + $offset))" >>$name.errtable
pos=$(($pos + $diff))
elif test $diff -lt 0 ; then
die "Position error"
fi
echo "$from $len error" >>$name.errtable
pos=$(($pos + $len))
done
diff=$(($size - $pos))
test $diff -gt 0 && echo "$pos $diff $type $pvdev $(($pos + $offset))" >>$name.errtable
init_udev_transaction
if dmsetup table $name ; then
dmsetup load "$name" "$name.errtable"
else
dmsetup create -u "TEST-$name" "$name" "$name.errtable"
fi
# using device name (since device path does not exists yet with udev)
dmsetup resume "$name"
notify_lvmetad "$dev"
finish_udev_transaction
}
backup_dev() {
local dev
for dev in "$@"; do
dd if="$dev" of="$dev.backup" bs=1024
done
}
restore_dev() {
local dev
for dev in "$@"; do
test -e "$dev.backup" || \
die "Internal error: $dev not backed up, can't restore!"
dd of="$dev" if="$dev.backup" bs=1024
done
}
prepare_pvs() {
prepare_devs "$@"
pvcreate -ff $devs
}
prepare_vg() {
teardown_devs
prepare_pvs "$@"
vgcreate -s 512K $vg $devs
}
extend_filter() {
filter=$(grep ^devices/global_filter CONFIG_VALUES | tail -n 1)
for rx in "$@"; do
filter=$(echo $filter | sed -e "s:\[:[ \"$rx\", :")
done
lvmconf "$filter"
}
extend_filter_LVMTEST() {
extend_filter "a|$DM_DEV_DIR/LVMTEST|"
}
hide_dev() {
filter=$(grep ^devices/global_filter CONFIG_VALUES | tail -n 1)
for dev in $@; do
filter=$(echo $filter | sed -e "s:\[:[ \"r|$dev|\", :")
done
lvmconf "$filter"
}
unhide_dev() {
filter=$(grep ^devices/global_filter CONFIG_VALUES | tail -n 1)
for dev in $@; do
filter=$(echo $filter | sed -e "s:\"r|$dev|\", ::")
done
lvmconf "$filter"
}
mkdev_md5sum() {
rm -f debug.log
mkfs.ext2 "$DM_DEV_DIR/$1/$2" || return 1
md5sum "$DM_DEV_DIR/$1/$2" > "md5.$1-$2"
}
generate_config() {
if test -n "$profile_name"; then
config_values=PROFILE_VALUES_$profile_name
config=PROFILE_$profile_name
touch $config_values
else
config_values=CONFIG_VALUES
config=CONFIG
fi
LVM_TEST_LOCKING=${LVM_TEST_LOCKING:-1}
if test "$DM_DEV_DIR" = "/dev"; then
LVM_VERIFY_UDEV=${LVM_VERIFY_UDEV:-0}
else
LVM_VERIFY_UDEV=${LVM_VERIFY_UDEV:-1}
fi
test -f $config_values || {
cat > $config_values <<-EOF
devices/dir = "$DM_DEV_DIR"
devices/scan = "$DM_DEV_DIR"
devices/filter = "a|.*|"
devices/global_filter = [ "a|$DM_DEV_DIR/mapper/.*pv[0-9_]*$|", "r|.*|" ]
devices/cache_dir = "$TESTDIR/etc"
devices/sysfs_scan = 0
devices/default_data_alignment = 1
devices/md_component_detection = 0
log/syslog = 0
log/indent = 1
log/level = 9
log/file = "$TESTDIR/debug.log"
log/overwrite = 1
log/activation = 1
log/verbose = 0
activation/retry_deactivation = 1
backup/backup = 0
backup/archive = 0
global/abort_on_internal_errors = 1
global/detect_internal_vg_cache_corruption = 1
global/library_dir = "$TESTDIR/lib"
global/locking_dir = "$TESTDIR/var/lock/lvm"
global/locking_type=$LVM_TEST_LOCKING
global/si_unit_consistency = 1
global/fallback_to_local_locking = 0
activation/checks = 1
activation/udev_sync = 1
activation/udev_rules = 1
activation/verify_udev_operations = $LVM_VERIFY_UDEV
activation/polling_interval = 0
activation/snapshot_autoextend_percent = 50
activation/snapshot_autoextend_threshold = 50
activation/monitoring = 0
allocation/wipe_signatures_when_zeroing_new_lvs = 0
EOF
}
local v
for v in "$@"; do
echo "$v" >> $config_values
done
rm -f $config
local s
for s in $(cat $config_values | cut -f1 -d/ | sort | uniq); do
echo "$s {" >> $config
local k
for k in $(grep ^"$s"/ $config_values | cut -f1 -d= | sed -e 's, *$,,' | sort | uniq); do
grep "^$k" $config_values | tail -n 1 | sed -e "s,^$s/, ," >> $config
done
echo "}" >> $config
echo >> $config
done
}
lvmconf() {
unset profile_name
generate_config "$@"
mv -f CONFIG etc/lvm.conf
}
profileconf() {
profile_name="$1"
shift
generate_config "$@"
test -d etc/profile || mkdir etc/profile
mv -f PROFILE_$profile_name etc/profile/$profile_name.profile
}
apitest() {
local t=$1
shift
test -x "$abs_top_builddir/test/api/$t.t" || skip
"$abs_top_builddir/test/api/$t.t" "$@" && rm -f debug.log
}
api() {
test -x "$abs_top_builddir/test/api/wrapper" || skip
"$abs_top_builddir/test/api/wrapper" "$@" && rm -f debug.log
}
mirror_recovery_works() {
case $(uname -r) in
3.3.4-5.fc17.i686|3.3.4-5.fc17.x86_64) return 1 ;;
esac
}
raid456_replace_works() {
# The way kmem_cache aliasing is done in the kernel is broken.
# It causes RAID 4/5/6 tests to fail.
#
# The problem with kmem_cache* is this:
# *) Assume CONFIG_SLUB is set
# 1) kmem_cache_create(name="foo-a")
# - creates new kmem_cache structure
# 2) kmem_cache_create(name="foo-b")
# - If identical cache characteristics, it will be merged with the previously
# created cache associated with "foo-a". The cache's refcount will be
# incremented and an alias will be created via sysfs_slab_alias().
# 3) kmem_cache_destroy(<ptr>)
# - Attempting to destroy cache associated with "foo-a", but instead the
# refcount is simply decremented. I don't even think the sysfs aliases are
# ever removed...
# 4) kmem_cache_create(name="foo-a")
# - This FAILS because kmem_cache_sanity_check colides with the existing
# name ("foo-a") associated with the non-removed cache.
#
# This is a problem for RAID (specifically dm-raid) because the name used
# for the kmem_cache_create is ("raid%d-%p", level, mddev). If the cache
# persists for long enough, the memory address of an old mddev will be
# reused for a new mddev - causing an identical formulation of the cache
# name. Even though kmem_cache_destory had long ago been used to delete
# the old cache, the merging of caches has cause the name and cache of that
# old instance to be preserved and causes a colision (and thus failure) in
# kmem_cache_create(). I see this regularly in testing the following
# kernels:
#
# This seems to be finaly resolved with this patch:
# http://www.redhat.com/archives/dm-devel/2014-March/msg00008.html
# so we need to put here exlusion for kernes which do trace SLUB
#
case $(uname -r) in
3.6.*.fc18.i686*|3.6.*.fc18.x86_64) return 1 ;;
3.9.*.fc19.i686*|3.9.*.fc19.x86_64) return 1 ;;
3.1[0123].*.fc18.i686*|3.1[0123].*.fc18.x86_64) return 1 ;;
3.1[0123].*.fc19.i686*|3.1[0123].*.fc19.x86_64) return 1 ;;
3.13.*.fc20.i686*|3.13.*.fc20.x86_64) return 1 ;;
3.14.*.fc21.i686*|3.14.*.fc21.x86_64) return 1 ;;
esac
}
udev_wait() {
pgrep udev >/dev/null || return 0
which udevadm &>/dev/null || return 0
if test -n "$1" ; then
udevadm settle --exit-if-exists="$1" || true
else
udevadm settle --timeout=15 || true
fi
}
# wait_for_sync <VG/LV>
wait_for_sync() {
local i
for i in {1..500} ; do
check in_sync $1 $2 && return
sleep .2
done
echo "Sync is taking too long - assume stuck"
return 1
}
# Check if tests are running on 64bit architecture
can_use_16T() {
test "$(getconf LONG_BIT)" -eq 64
}
#
# Check wheter kernel [dm module] target exist
# at least in expected version
#
# [dm-]target-name major minor revision
#
# i.e. dm_target_at_least dm-thin-pool 1 0
target_at_least() {
rm -f debug.log
case "$1" in
dm-*) modprobe "$1" || true ;;
esac
if test "$1" = dm-raid; then
case "$(uname -r)" in
3.12.0*) return 1 ;;
esac
fi
local version=$(dmsetup targets 2>/dev/null | grep "${1##dm-} " 2>/dev/null)
version=${version##* v}
shift
local major=$(echo "$version" | cut -d. -f1)
test -z "$1" && return 0
test -n "$major" || return 1
test "$major" -gt "$1" && return 0
test "$major" -eq "$1" || return 1
test -z "$2" && return 0
local minor=$(echo "$version" | cut -d. -f2)
test -n "$minor" || return 1
test "$minor" -gt "$2" && return 0
test "$minor" -eq "$2" || return 1
test -z "$3" && return 0
local revision=$(echo "$version" | cut -d. -f3)
test "$revision" -ge "$3" 2>/dev/null || return 1
}
have_thin() {
target_at_least dm-thin-pool "$@" || exit 1
test "$THIN" = shared || test "$THIN" = internal || exit 1
# disable thin_check if not present in system
which thin_check || lvmconf 'global/thin_check_executable = ""'
}
# check if lvm shell is build-in (needs readline)
have_readline() {
echo version | lvm &>/dev/null
}
dmsetup_wrapped() {
udev_wait
dmsetup "$@"
}
test -f DEVICES && devs=$(cat DEVICES)
if test "$1" = dmsetup; then
shift
dmsetup_wrapped "$@"
else
"$@"
fi
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