+
+# Check if fallocate supported on OSTs, enable if unset, default mode=0
+# Optionally pass the OST fallocate mode (0=unwritten extents, 1=zero extents)
+function check_set_fallocate()
+{
+ local new_mode="$1"
+ local osts=$(comma_list $(osts_nodes))
+ local fa_mode="osd-ldiskfs.*.fallocate_zero_blocks"
+ local old_mode=$(do_facet ost1 $LCTL get_param -n $fa_mode 2>/dev/null|
+ head -n 1)
+
+ [[ -n "$old_mode" ]] || { echo "fallocate not supported"; return 1; }
+ [[ -z "$new_mode" && "$old_mode" != "-1" ]] &&
+ { echo "keep default fallocate mode: $old_mode"; return 0; }
+ [[ "$new_mode" && "$old_mode" == "$new_mode" ]] &&
+ { echo "keep current fallocate mode: $old_mode"; return 0; }
+
+ stack_trap "do_nodes $osts $LCTL set_param $fa_mode=$old_mode"
+ do_nodes $osts $LCTL set_param $fa_mode=${new_mode:-0} ||
+ error "set $fa_mode=$new_mode"
+}
+
+# Check if fallocate supported on OSTs, enable if unset, skip if unavailable
+function check_set_fallocate_or_skip()
+{
+ [ "$ost1_FSTYPE" != ldiskfs ] && skip "non-ldiskfs backend"
+ check_set_fallocate || skip "need at least 2.13.57 for fallocate"
+}
+
+function disable_opencache()
+{
+ local state=$($LCTL get_param -n "llite.*.opencache_threshold_count" | head -1)
+
+ test -z "${saved_OPENCACHE_value}" &&
+ export saved_OPENCACHE_value="$state"
+
+ [[ "$state" = "off" ]] && return
+
+ $LCTL set_param -n "llite.*.opencache_threshold_count"=off
+}
+
+function set_opencache()
+{
+ local newvalue="$1"
+ local state=$($LCTL get_param -n "llite.*.opencache_threshold_count")
+
+ [[ -n "$newvalue" ]] || return
+
+ [[ -n "${saved_OPENCACHE_value}" ]] ||
+ export saved_OPENCACHE_value="$state"
+
+ $LCTL set_param -n "llite.*.opencache_threshold_count"=$newvalue
+}
+
+
+
+function restore_opencache()
+{
+ [[ -z "${saved_OPENCACHE_value}" ]] ||
+ $LCTL set_param -n "llite.*.opencache_threshold_count"=${saved_OPENCACHE_value}
+}
+
+# LU-13417: XXX lots of tests assume the directory to be created under MDT0,
+# created on MDT0, use this function to create directory on specific MDT
+# explicitly, and set default LMV to create subdirs on the same MDT too.
+mkdir_on_mdt() {
+ local mdt
+ local OPTIND=1
+
+ while getopts "i:" opt $*; do
+ case $opt in
+ i) mdt=$OPTARG;;
+ esac
+ done
+
+ shift $((OPTIND - 1))
+
+ $LFS mkdir -i $mdt -c 1 $*
+ # setting default LMV in non-DNE system will cause sanity-quota 41 fail
+ ((MDSCOUNT < 2)) || $LFS setdirstripe -D -i $mdt -c 1 $*
+}
+
+mkdir_on_mdt0() {
+ mkdir_on_mdt -i0 $*
+}
+
+# Wait for nodemap synchronization
+wait_nm_sync() {
+ local nodemap_name=$1
+ local key=$2
+ local value=$3
+ local opt=$4
+ local proc_param
+ local is_active=$(do_facet mgs $LCTL get_param -n nodemap.active)
+ local max_retries=20
+ local is_sync
+ local out1=""
+ local out2
+ local mgs_ip=$(host_nids_address $mgs_HOST $NETTYPE | cut -d' ' -f1)
+ local i
+
+ if [ "$nodemap_name" == "active" ]; then
+ proc_param="active"
+ elif [ -z "$key" ]; then
+ proc_param=${nodemap_name}
+ else
+ proc_param="${nodemap_name}.${key}"
+ fi
+ if [ "$opt" == "inactive" ]; then
+ # check nm sync even if nodemap is not activated
+ is_active=1
+ opt=""
+ fi
+ (( is_active == 0 )) && [ "$proc_param" != "active" ] && return
+
+ if [ -z "$value" ]; then
+ out1=$(do_facet mgs $LCTL get_param $opt \
+ nodemap.${proc_param} 2>/dev/null)
+ echo "On MGS ${mgs_ip}, ${proc_param} = $out1"
+ else
+ out1=$value;
+ fi
+
+ # if servers run on the same node, it is impossible to tell if they get
+ # synced with the mgs, so just wait an arbitrary 10 seconds
+ if [ $(facet_active_host mgs) == $(facet_active_host mds) ] &&
+ [ $(facet_active_host mgs) == $(facet_active_host ost1) ]; then
+ echo "waiting 10 secs for sync"
+ sleep 10
+ return
+ fi
+
+ # wait up to 10 seconds for other servers to sync with mgs
+ for i in $(seq 1 10); do
+ for node in $(all_server_nodes); do
+ local node_ip=$(host_nids_address $node $NETTYPE |
+ cut -d' ' -f1)
+
+ is_sync=true
+ if [ -z "$value" ]; then
+ [ $node_ip == $mgs_ip ] && continue
+ fi
+
+ out2=$(do_node $node_ip $LCTL get_param $opt \
+ nodemap.$proc_param 2>/dev/null)
+ echo "On $node ${node_ip}, ${proc_param} = $out2"
+ [ "$out1" != "$out2" ] && is_sync=false && break
+ done
+ $is_sync && break
+ sleep 1
+ done
+ if ! $is_sync; then
+ echo MGS
+ echo $out1
+ echo OTHER - IP: $node_ip
+ echo $out2
+ error "mgs and $nodemap_name ${key} mismatch, $i attempts"
+ fi
+ echo "waited $((i - 1)) seconds for sync"
+}