#define OBD_FAIL_MDS_RENAME4 0x156
#define OBD_FAIL_MDS_LDLM_REPLY_NET 0x157
#define OBD_FAIL_MDS_STALE_DIR_LAYOUT 0x158
+#define OBD_FAIL_MDS_REINT_MULTI_NET 0x159
+#define OBD_FAIL_MDS_REINT_MULTI_NET_REP 0x15a
/* layout lock */
#define OBD_FAIL_MDS_NO_LL_GETATTR 0x170
static int target_send_reply_msg(struct ptlrpc_request *req,
int rc, int fail_id)
{
- if (OBD_FAIL_CHECK_ORSET(fail_id & ~OBD_FAIL_ONCE, OBD_FAIL_ONCE)) {
- DEBUG_REQ(D_ERROR, req, "dropping reply");
- return (-ECOMM);
- }
+ if (OBD_FAIL_CHECK_ORSET(fail_id & ~OBD_FAIL_ONCE, OBD_FAIL_ONCE)) {
+ DEBUG_REQ(D_ERROR, req, "dropping reply");
+ return -ECOMM;
+ }
+ if (unlikely(lustre_msg_get_opc(req->rq_reqmsg) == MDS_REINT &&
+ OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_MULTI_NET_REP)))
+ return -ECOMM;
- if (unlikely(rc)) {
- DEBUG_REQ(D_NET, req, "processing error (%d)", rc);
- req->rq_status = rc;
- return (ptlrpc_send_error(req, 1));
- } else {
- DEBUG_REQ(D_NET, req, "sending reply");
- }
+ if (unlikely(rc)) {
+ DEBUG_REQ(D_NET, req, "processing error (%d)", rc);
+ req->rq_status = rc;
+ return ptlrpc_send_error(req, 1);
+ } else {
+ DEBUG_REQ(D_NET, req, "sending reply");
+ }
- return (ptlrpc_send_reply(req, PTLRPC_REPLY_MAYBE_DIFFICULT));
+ return ptlrpc_send_reply(req, PTLRPC_REPLY_MAYBE_DIFFICULT);
}
void target_send_reply(struct ptlrpc_request *req, int rc, int fail_id)
*/
if (OBD_FAIL_CHECK_ORSET(h->th_fail_id, OBD_FAIL_ONCE))
RETURN(0);
+ if (unlikely(lustre_msg_get_opc(req->rq_reqmsg) == MDS_REINT &&
+ OBD_FAIL_CHECK(OBD_FAIL_MDS_REINT_MULTI_NET)))
+ RETURN(0);
rc = tgt_request_preprocess(tsi, h, req);
/* pack reply if reply format is fixed */
}
run_test 87 "check if MDT inode can hold EAs with N stripes properly"
+# $1 test directory
+# $2 (optional) value of max_mod_rpcs_in_flight to set
+check_max_mod_rpcs_in_flight() {
+ local dir="$1"
+ local mmr="$2"
+ local idx
+ local facet
+ local tmp
+ local i
+
+ idx=$(printf "%04x" $($LFS getdirstripe -i $dir))
+ facet="mds$((0x$idx + 1))"
+
+ if [ -z "$mmr" ]; then
+ # get value of max_mod_rcps_in_flight
+ mmr=$($LCTL get_param -n \
+ mdc.$FSNAME-MDT$idx-mdc-*.max_mod_rpcs_in_flight) ||
+ error "Unable to get max_mod_rpcs_in_flight"
+ echo "max_mod_rcps_in_flight is $mmr"
+ else
+ # set value of max_mod_rpcs_in_flight
+ $LCTL set_param \
+ mdc.$FSNAME-MDT$idx-mdc-*.max_mod_rpcs_in_flight=$mmr ||
+ error "Unable to set max_mod_rpcs_in_flight to $mmr"
+ echo "max_mod_rpcs_in_flight set to $mmr"
+ fi
+
+ # create mmr+1 files
+ echo "creating $((mmr + 1)) files ..."
+ umask 0022
+ for i in $(seq $((mmr + 1))); do
+ touch $dir/file-$i
+ done
+
+ ### part 1 ###
+
+ # consumes mmr-1 modify RPC slots
+ #define OBD_FAIL_MDS_REINT_MULTI_NET 0x159
+ # drop requests on MDT so that RPC slots are consumed
+ # during all the request resend interval
+ do_facet $facet "$LCTL set_param fail_loc=0x159"
+ echo "launch $((mmr - 1)) chmod in parallel ..."
+ for i in $(seq $((mmr - 1))); do
+ chmod 0600 $dir/file-$i &
+ done
+
+ # send one additional modify RPC
+ do_facet $facet "$LCTL set_param fail_loc=0"
+ echo "launch 1 additional chmod in parallel ..."
+ chmod 0600 $dir/file-$mmr &
+ sleep 1
+
+ # check this additional modify RPC get a modify RPC slot
+ # and succeed its operation
+ checkstat -vp 0600 $dir/file-$mmr ||
+ error "Unable to send $mmr modify RPCs in parallel"
+ wait
+
+ ### part 2 ###
+
+ # consumes mmr modify RPC slots
+ #define OBD_FAIL_MDS_REINT_MULTI_NET 0x159
+ # drop requests on MDT so that RPC slots are consumed
+ # during all the request resend interval
+ do_facet $facet "$LCTL set_param fail_loc=0x159"
+ echo "launch $mmr chmod in parallel ..."
+ for i in $(seq $mmr); do
+ chmod 0666 $dir/file-$i &
+ done
+
+ # send one additional modify RPC
+ do_facet $facet "$LCTL set_param fail_loc=0"
+ echo "launch 1 additional chmod in parallel ..."
+ chmod 0666 $dir/file-$((mmr + 1)) &
+ sleep 1
+
+ # check this additional modify RPC blocked getting a modify RPC slot
+ checkstat -vp 0644 $dir/file-$((mmr + 1)) ||
+ error "Unexpectedly send $mmr modify RPCs in parallel"
+ wait
+}
+
+test_90a() {
+ reformat
+ if ! combined_mgs_mds ; then
+ start_mgs
+ fi
+ setup
+
+ [[ $($LCTL get_param mdc.*.import |
+ grep "connect_flags:.*multi_mod_rpc") ]] ||
+ { skip "Need MDC with 'multi_mod_rpcs' feature"; return 0; }
+
+ # check default value
+ $LFS mkdir -c1 $DIR/$tdir || error "mkdir $DIR/$tdir failed"
+ check_max_mod_rpcs_in_flight $DIR/$tdir
+
+ cleanup
+}
+run_test 90a "check max_mod_rpcs_in_flight is enforced"
+
+test_90b() {
+ local idx
+ local facet
+ local tmp
+ local mmrpc
+
+ setup
+
+ [[ $($LCTL get_param mdc.*.import |
+ grep "connect_flags:.*multi_mod_rpc") ]] ||
+ { skip "Need MDC with 'multi_mod_rpcs' feature"; return 0; }
+
+ ### test 1.
+ # update max_mod_rpcs_in_flight
+ $LFS mkdir -c1 $DIR/${tdir}1 || error "mkdir $DIR/${tdir}1 failed"
+ check_max_mod_rpcs_in_flight $DIR/${tdir}1 1
+
+ ### test 2.
+ # check client is able to send multiple modify RPCs in paralell
+ tmp=$($LCTL get_param -n mdc.$FSNAME-MDT*-mdc-*.import |
+ grep -c "multi_mod_rpcs")
+ if [ "$tmp" -ne $MDSCOUNT ]; then
+ echo "Client not able to send multiple modify RPCs in parallel"
+ cleanup
+ return
+ fi
+
+ # update max_mod_rpcs_in_flight
+ $LFS mkdir -c1 $DIR/${tdir}2 || error "mkdir $DIR/${tdir}2 failed"
+ check_max_mod_rpcs_in_flight $DIR/${tdir}2 5
+
+ ### test 3.
+ $LFS mkdir -c1 $DIR/${tdir}3 || error "mkdir $DIR/${tdir}3 failed"
+ idx=$(printf "%04x" $($LFS getdirstripe -i $DIR/${tdir}3))
+ facet="mds$((0x$idx + 1))"
+
+ # save MDT max_mod_rpcs_per_client
+ mmrpc=$(do_facet $facet \
+ cat /sys/module/mdt/parameters/max_mod_rpcs_per_client)
+
+ # update max_mod_rpcs_in_flight
+ umount_client $MOUNT
+ do_facet $facet \
+ "echo 16 > /sys/module/mdt/parameters/max_mod_rpcs_per_client"
+ mount_client $MOUNT
+ $LCTL set_param mdc.$FSNAME-MDT$idx-mdc-*.max_rpcs_in_flight=17
+ check_max_mod_rpcs_in_flight $DIR/${tdir}3 16
+
+ # restore MDT max_mod_rpcs_per_client initial value
+ do_facet $facet \
+ "echo $mmrpc > /sys/module/mdt/parameters/max_mod_rpcs_per_client"
+
+ rm -rf $DIR/${tdir}?
+ cleanup
+}
+run_test 90b "check max_mod_rpcs_in_flight is enforced after update"
+
+test_90c() {
+ local tmp
+ local mrif
+ local mmrpc
+
+ setup
+
+ [[ $($LCTL get_param mdc.*.import |
+ grep "connect_flags:.*multi_mod_rpc") ]] ||
+ { skip "Need MDC with 'multi_mod_rpcs' feature"; return 0; }
+
+ # check client is able to send multiple modify RPCs in paralell
+ tmp=$($LCTL get_param -n mdc.$FSNAME-MDT*-mdc-*.import |
+ grep -c "multi_mod_rpcs")
+ if [ "$tmp" -ne $MDSCOUNT ]; then
+ skip "Client not able to send multiple modify RPCs in parallel"
+ cleanup
+ return
+ fi
+
+ # get max_rpcs_in_flight value
+ mrif=$($LCTL get_param -n mdc.$FSNAME-MDT0000-mdc-*.max_rpcs_in_flight)
+ echo "max_rpcs_in_flight is $mrif"
+
+ # get MDT max_mod_rpcs_per_client
+ mmrpc=$(do_facet mds1 \
+ cat /sys/module/mdt/parameters/max_mod_rpcs_per_client)
+ echo "max_mod_rpcs_per_client is $mmrpc"
+
+ # testcase 1
+ # attempt to set max_mod_rpcs_in_flight to max_rpcs_in_flight value
+ # prerequisite: set max_mod_rpcs_per_client to max_rpcs_in_flight value
+ umount_client $MOUNT
+ do_facet mds1 \
+ "echo $mrif > /sys/module/mdt/parameters/max_mod_rpcs_per_client"
+ mount_client $MOUNT
+
+ $LCTL set_param \
+ mdc.$FSNAME-MDT0000-mdc-*.max_mod_rpcs_in_flight=$mrif &&
+ error "set max_mod_rpcs_in_flight to $mrif should fail"
+
+ umount_client $MOUNT
+ do_facet mds1 \
+ "echo $mmrpc > /sys/module/mdt/parameters/max_mod_rpcs_per_client"
+ mount_client $MOUNT
+
+ # testcase 2
+ # attempt to set max_mod_rpcs_in_flight to max_mod_rpcs_per_client+1
+ # prerequisite: set max_rpcs_in_flight to max_mod_rpcs_per_client+2
+ $LCTL set_param \
+ mdc.$FSNAME-MDT0000-mdc-*.max_rpcs_in_flight=$((mmrpc + 2))
+
+ $LCTL set_param \
+ mdc.$FSNAME-MDT0000-mdc-*.max_mod_rpcs_in_flight=$((mmrpc + 1)) &&
+ error "set max_mod_rpcs_in_flight to $((mmrpc + 1)) should fail"
+
+ cleanup
+}
+run_test 90c "check max_mod_rpcs_in_flight update limits"
+
+test_90d() {
+ local idx
+ local facet
+ local mmr
+ local i
+ local pid
+
+ setup
+
+ [[ $($LCTL get_param mdc.*.import |
+ grep "connect_flags:.*multi_mod_rpc") ]] ||
+ { skip "Need MDC with 'multi_mod_rpcs' feature"; return 0; }
+
+ $LFS mkdir -c1 $DIR/$tdir || error "mkdir $DIR/$tdir failed"
+ idx=$(printf "%04x" $($LFS getdirstripe -i $DIR/$tdir))
+ facet="mds$((0x$idx + 1))"
+
+ # check client version supports multislots
+ tmp=$($LCTL get_param -N \
+ mdc.$FSNAME-MDT$idx-mdc-*.max_mod_rpcs_in_flight)
+ if [ -z "$tmp" ]; then
+ skip "Client does not support multiple modify RPCs in flight"
+ cleanup
+ return
+ fi
+
+ # get current value of max_mod_rcps_in_flight
+ mmr=$($LCTL get_param -n \
+ mdc.$FSNAME-MDT$idx-mdc-*.max_mod_rpcs_in_flight)
+ echo "max_mod_rcps_in_flight is $mmr"
+
+ # create mmr files
+ echo "creating $mmr files ..."
+ umask 0022
+ for i in $(seq $mmr); do
+ touch $DIR/$tdir/file-$i
+ done
+
+ # prepare for close RPC
+ multiop_bg_pause $DIR/$tdir/file-close O_c
+ pid=$!
+
+ # consumes mmr modify RPC slots
+ #define OBD_FAIL_MDS_REINT_MULTI_NET 0x159
+ # drop requests on MDT so that RPC slots are consumed
+ # during all the request resend interval
+ do_facet $facet "$LCTL set_param fail_loc=0x159"
+ echo "launch $mmr chmod in parallel ..."
+ for i in $(seq $mmr); do
+ chmod 0600 $DIR/$tdir/file-$i &
+ done
+
+ # send one additional close RPC
+ do_facet $facet "$LCTL set_param fail_loc=0"
+ echo "launch 1 additional close in parallel ..."
+ kill -USR1 $pid
+ cancel_lru_locks mdc
+ sleep 1
+
+ # check this additional close RPC get a modify RPC slot
+ # and multiop process completed
+ [ -d /proc/$pid ] &&
+ error "Unable to send the additional close RPC in parallel"
+ wait
+ rm -rf $DIR/$tdir
+ cleanup
+}
+run_test 90d "check one close RPC is allowed above max_mod_rpcs_in_flight"
if ! combined_mgs_mds ; then
stop mgs
# Skip these tests
# bug number for skipped tests:
-# b=17466/LU-472 : 61d
-# LU-5319 : 53a 53d
-ALWAYS_EXCEPT="61d 53a 53d $REPLAY_SINGLE_EXCEPT"
+# b=17466/LU-472
+ALWAYS_EXCEPT="$REPLAY_SINGLE_EXCEPT 61d"
# UPDATE THE COMMENT ABOVE WITH BUG NUMBERS WHEN CHANGING ALWAYS_EXCEPT!
case "$(lsb_release -sr)" in # only disable tests for el7
# bug 3462 - simultaneous MDC requests
test_53a() {
+ [[ $(lctl get_param mdc.*.import |
+ grep "connect_flags:.*multi_mod_rpc") ]] ||
+ { skip "Need MDC with 'multi_mod_rpcs' feature"; return 0; }
+
cancel_lru_locks mdc # cleanup locks from former test cases
mkdir $DIR/${tdir}-1 || error "mkdir $DIR/${tdir}-1 failed"
mkdir $DIR/${tdir}-2 || error "mkdir $DIR/${tdir}-2 failed"
run_test 53c "|X| open request and close request while two MDC requests in flight"
test_53d() {
+ [[ $(lctl get_param mdc.*.import |
+ grep "connect_flags:.*multi_mod_rpc") ]] ||
+ { skip "Need MDC with 'multi_mod_rpcs' feature"; return 0; }
+
cancel_lru_locks mdc # cleanup locks from former test cases
mkdir $DIR/${tdir}-1 || error "mkdir $DIR/${tdir}-1 failed"
}
run_test 101 "Shouldn't reassign precreated objs to other files after recovery"
+test_102a() {
+ local idx
+ local facet
+ local num
+ local i
+ local pids pid
+
+ [[ $(lctl get_param mdc.*.import |
+ grep "connect_flags:.*multi_mod_rpc") ]] ||
+ { skip "Need MDC with 'multi_mod_rpcs' feature"; return 0; }
+
+ $LFS mkdir -c1 $DIR/$tdir || error "mkdir $DIR/$tdir failed"
+ idx=$(printf "%04x" $($LFS getdirstripe -i $DIR/$tdir))
+ facet="mds$((0x$idx + 1))"
+
+ # get current value of max_mod_rcps_in_flight
+ num=$($LCTL get_param -n \
+ mdc.$FSNAME-MDT$idx-mdc-*.max_mod_rpcs_in_flight)
+ # set default value if client does not support multi mod RPCs
+ [ -z "$num" ] && num=1
+
+ echo "creating $num files ..."
+ umask 0022
+ for i in $(seq $num); do
+ touch $DIR/$tdir/file-$i
+ done
+
+ # drop request on MDT to force resend
+ #define OBD_FAIL_MDS_REINT_MULTI_NET 0x159
+ do_facet $facet "$LCTL set_param fail_loc=0x159"
+ echo "launch $num chmod in parallel ($(date +%H:%M:%S)) ..."
+ for i in $(seq $num); do
+ chmod 0600 $DIR/$tdir/file-$i &
+ pids="$pids $!"
+ done
+ sleep 1
+ do_facet $facet "$LCTL set_param fail_loc=0"
+ for pid in $pids; do
+ wait $pid || error "chmod failed"
+ done
+ echo "done ($(date +%H:%M:%S))"
+
+ # check chmod succeed
+ for i in $(seq $num); do
+ checkstat -vp 0600 $DIR/$tdir/file-$i
+ done
+
+ rm -rf $DIR/$tdir
+}
+run_test 102a "check resend (request lost) with multiple modify RPCs in flight"
+
+test_102b() {
+ local idx
+ local facet
+ local num
+ local i
+ local pids pid
+
+ [[ $(lctl get_param mdc.*.import |
+ grep "connect_flags:.*multi_mod_rpc") ]] ||
+ { skip "Need MDC with 'multi_mod_rpcs' feature"; return 0; }
+
+ $LFS mkdir -c1 $DIR/$tdir || error "mkdir $DIR/$tdir failed"
+ idx=$(printf "%04x" $($LFS getdirstripe -i $DIR/$tdir))
+ facet="mds$((0x$idx + 1))"
+
+ # get current value of max_mod_rcps_in_flight
+ num=$($LCTL get_param -n \
+ mdc.$FSNAME-MDT$idx-mdc-*.max_mod_rpcs_in_flight)
+ # set default value if client does not support multi mod RPCs
+ [ -z "$num" ] && num=1
+
+ echo "creating $num files ..."
+ umask 0022
+ for i in $(seq $num); do
+ touch $DIR/$tdir/file-$i
+ done
+
+ # drop reply on MDT to force reconstruction
+ #define OBD_FAIL_MDS_REINT_MULTI_NET_REP 0x15a
+ do_facet $facet "$LCTL set_param fail_loc=0x15a"
+ echo "launch $num chmod in parallel ($(date +%H:%M:%S)) ..."
+ for i in $(seq $num); do
+ chmod 0600 $DIR/$tdir/file-$i &
+ pids="$pids $!"
+ done
+ sleep 1
+ do_facet $facet "$LCTL set_param fail_loc=0"
+ for pid in $pids; do
+ wait $pid || error "chmod failed"
+ done
+ echo "done ($(date +%H:%M:%S))"
+
+ # check chmod succeed
+ for i in $(seq $num); do
+ checkstat -vp 0600 $DIR/$tdir/file-$i
+ done
+
+ rm -rf $DIR/$tdir
+}
+run_test 102b "check resend (reply lost) with multiple modify RPCs in flight"
+
+test_102c() {
+ local idx
+ local facet
+ local num
+ local i
+ local pids pid
+
+ [[ $(lctl get_param mdc.*.import |
+ grep "connect_flags:.*multi_mod_rpc") ]] ||
+ { skip "Need MDC with 'multi_mod_rpcs' feature"; return 0; }
+
+ $LFS mkdir -c1 $DIR/$tdir || error "mkdir $DIR/$tdir failed"
+ idx=$(printf "%04x" $($LFS getdirstripe -i $DIR/$tdir))
+ facet="mds$((0x$idx + 1))"
+
+ # get current value of max_mod_rcps_in_flight
+ num=$($LCTL get_param -n \
+ mdc.$FSNAME-MDT$idx-mdc-*.max_mod_rpcs_in_flight)
+ # set default value if client does not support multi mod RPCs
+ [ -z "$num" ] && num=1
+
+ echo "creating $num files ..."
+ umask 0022
+ for i in $(seq $num); do
+ touch $DIR/$tdir/file-$i
+ done
+
+ replay_barrier $facet
+
+ # drop reply on MDT
+ #define OBD_FAIL_MDS_REINT_MULTI_NET_REP 0x15a
+ do_facet $facet "$LCTL set_param fail_loc=0x15a"
+ echo "launch $num chmod in parallel ($(date +%H:%M:%S)) ..."
+ for i in $(seq $num); do
+ chmod 0600 $DIR/$tdir/file-$i &
+ pids="$pids $!"
+ done
+ sleep 1
+ do_facet $facet "$LCTL set_param fail_loc=0"
+
+ # fail MDT
+ fail $facet
+
+ for pid in $pids; do
+ wait $pid || error "chmod failed"
+ done
+ echo "done ($(date +%H:%M:%S))"
+
+ # check chmod succeed
+ for i in $(seq $num); do
+ checkstat -vp 0600 $DIR/$tdir/file-$i
+ done
+
+ rm -rf $DIR/$tdir
+}
+run_test 102c "check replay w/o reconstruction with multiple mod RPCs in flight"
+
+test_102d() {
+ local idx
+ local facet
+ local num
+ local i
+ local pids pid
+
+ [[ $(lctl get_param mdc.*.import |
+ grep "connect_flags:.*multi_mod_rpc") ]] ||
+ { skip "Need MDC with 'multi_mod_rpcs' feature"; return 0; }
+
+ $LFS mkdir -c1 $DIR/$tdir || error "mkdir $DIR/$tdir failed"
+ idx=$(printf "%04x" $($LFS getdirstripe -i $DIR/$tdir))
+ facet="mds$((0x$idx + 1))"
+
+ # get current value of max_mod_rcps_in_flight
+ num=$($LCTL get_param -n \
+ mdc.$FSNAME-MDT$idx-mdc-*.max_mod_rpcs_in_flight)
+ # set default value if client does not support multi mod RPCs
+ [ -z "$num" ] && num=1
+
+ echo "creating $num files ..."
+ umask 0022
+ for i in $(seq $num); do
+ touch $DIR/$tdir/file-$i
+ done
+
+ # drop reply on MDT
+ #define OBD_FAIL_MDS_REINT_MULTI_NET_REP 0x15a
+ do_facet $facet "$LCTL set_param fail_loc=0x15a"
+ echo "launch $num chmod in parallel ($(date +%H:%M:%S)) ..."
+ for i in $(seq $num); do
+ chmod 0600 $DIR/$tdir/file-$i &
+ pids="$pids $!"
+ done
+ sleep 1
+
+ # write MDT transactions to disk
+ do_facet $facet "sync; sync; sync"
+
+ do_facet $facet "$LCTL set_param fail_loc=0"
+
+ # fail MDT
+ fail $facet
+
+ for pid in $pids; do
+ wait $pid || error "chmod failed"
+ done
+ echo "done ($(date +%H:%M:%S))"
+
+ # check chmod succeed
+ for i in $(seq $num); do
+ checkstat -vp 0600 $DIR/$tdir/file-$i
+ done
+
+ rm -rf $DIR/$tdir
+}
+run_test 102d "check replay & reconstruction with multiple mod RPCs in flight"
+
check_striped_dir_110()
{
$CHECKSTAT -t dir $DIR/$tdir/striped_dir ||
}
run_test 244 "sendfile with group lock tests"
+test_245() {
+ local flagname="multi_mod_rpcs"
+ local connect_data_name="max_mod_rpcs"
+ local out
+
+ # check if multiple modify RPCs flag is set
+ out=$($LCTL get_param mdc.$FSNAME-MDT0000-*.import |
+ grep "connect_flags:")
+ echo "$out"
+
+ echo "$out" | grep -qw $flagname
+ if [ $? -ne 0 ]; then
+ echo "connect flag $flagname is not set"
+ return
+ fi
+
+ # check if multiple modify RPCs data is set
+ out=$($LCTL get_param mdc.$FSNAME-MDT0000-*.import)
+ echo "$out"
+
+ echo "$out" | grep -qw $connect_data_name ||
+ error "import should have connect data $connect_data_name"
+}
+run_test 245 "check mdc connection flag/data: multiple modify RPCs"
+
test_250() {
[ "$(facet_fstype ost$(($($GETSTRIPE -i $DIR/$tfile) + 1)))" = "zfs" ] \
&& skip "no 16TB file size limit on ZFS" && return