== replay-dual test 26: dbench and tar with mds failover ========================================================== 12:52:01 (1784047921) Starting client oleg443-client.virtnet: -o user_xattr,flock 192.168.204.143@tcp:/lustre /mnt/lustre Started clients oleg443-client.virtnet: 192.168.204.143@tcp:/lustre on /mnt/lustre type lustre (rw,flock,checksum,encrypt,lazystatfs,lruresize,nolock,statfs_project,nouser_fid2path,user_xattr,verbose) Started tar loop with pid 65622 Started dbench loop with 65623 striped dir -i0 -c2 -H crush2 /mnt/lustre/d26.replay-dual/run_tar striped dir -i0 -c2 -H fnv_1a_64 /mnt/lustre2/d26.replay-dual/run_dbench looking for dbench program /usr/bin/dbench found dbench client file /usr/share/dbench/client.txt UUID 1K-blocks Used Available Use% Mounted on lustre-MDT0000_UUID 1414116 1980 1269324 1% /mnt/lustre[MDT:0] lustre-MDT0001_UUID 1414116 1792 1269512 1% /mnt/lustre[MDT:1] lustre-OST0000_UUID 3833116 1564 3605456 1% /mnt/lustre[OST:0] lustre-OST0001_UUID 3833116 1544 3584792 1% /mnt/lustre[OST:1] filesystem_summary: 7666232 3108 7190248 1% /mnt/lustre '/usr/share/dbench/client.txt' -> 'client.txt' running 'dbench 1 -D /mnt/lustre2/d26.replay-dual/run_dbench -t 100' on /mnt/lustre at Tue Jul 14 12:52:06 EDT 2026 waiting for dbench pid 65701 dbench version 4.00 - Copyright Andrew Tridgell 1999-2004 Running for 100 seconds with load 'client.txt' and minimum warmup 20 secs failed to create barrier semaphore 0 of 1 processes prepared for launch 0 sec 1 of 1 processes prepared for launch 0 sec releasing clients 1 31 1.05 MB/sec warmup 1 sec latency 48.308 ms 1 91 2.10 MB/sec warmup 2 sec latency 112.852 ms 1 124 1.83 MB/sec warmup 3 sec latency 179.182 ms 1 154 1.64 MB/sec warmup 4 sec latency 169.633 ms 1 177 1.42 MB/sec warmup 5 sec latency 179.575 ms 1 188 1.26 MB/sec warmup 6 sec latency 456.082 ms 1 220 1.21 MB/sec warmup 7 sec latency 225.566 ms 1 271 1.27 MB/sec warmup 8 sec latency 113.291 ms 1 315 1.27 MB/sec warmup 9 sec latency 95.166 ms test_26 fail mds1 1 times 1 351 1.25 MB/sec warmup 10 sec latency 130.080 ms Failing mds1 on oleg443-server 1 389 1.25 MB/sec warmup 11 sec latency 164.557 ms Stopping /mnt/lustre-mds1 (opts:) on oleg443-server 1 429 1.26 MB/sec warmup 12 sec latency 95.880 ms 1 461 1.24 MB/sec warmup 13 sec latency 262.446 ms 1 461 1.15 MB/sec warmup 14 sec latency 1262.605 ms 12:52:21 (1784047941) shut down facet: mds1 facet_host: oleg443-server facet_failover_host: oleg443-server 1 461 1.08 MB/sec warmup 15 sec latency 2265.090 ms 1 461 1.01 MB/sec warmup 16 sec latency 3266.194 ms 1 461 0.95 MB/sec warmup 17 sec latency 4266.650 ms 1 461 0.90 MB/sec warmup 18 sec latency 5267.486 ms 1 461 0.85 MB/sec warmup 19 sec latency 6269.435 ms 1 461 0.00 MB/sec execute 1 sec latency 8271.112 ms 1 461 0.00 MB/sec execute 2 sec latency 9273.563 ms 1 461 0.00 MB/sec execute 3 sec latency 10278.348 ms 1 461 0.00 MB/sec execute 4 sec latency 11278.721 ms 1 461 0.00 MB/sec execute 5 sec latency 12279.673 ms Failover mds1 to oleg443-server mount facets: mds1 1 461 0.00 MB/sec execute 6 sec latency 13280.036 ms 1 461 0.00 MB/sec execute 7 sec latency 14280.861 ms 1 461 0.00 MB/sec execute 8 sec latency 15281.837 ms 1 461 0.00 MB/sec execute 9 sec latency 16289.489 ms 1 461 0.00 MB/sec execute 10 sec latency 17289.710 ms 1 461 0.00 MB/sec execute 11 sec latency 18291.630 ms 1 461 0.00 MB/sec execute 12 sec latency 19291.825 ms 1 461 0.00 MB/sec execute 13 sec latency 20291.989 ms Start mds1: mount -t lustre -o localrecov /dev/mapper/mds1_flakey /mnt/lustre-mds1 1 461 0.00 MB/sec execute 14 sec latency 21292.398 ms 1 461 0.00 MB/sec execute 15 sec latency 22296.280 ms 1 461 0.00 MB/sec execute 16 sec latency 23297.361 ms 1 461 0.00 MB/sec execute 17 sec latency 24297.625 ms 1 461 0.00 MB/sec execute 18 sec latency 25297.893 ms 1 461 0.00 MB/sec execute 19 sec latency 26298.690 ms 1 461 0.00 MB/sec execute 20 sec latency 27301.821 ms 1 461 0.00 MB/sec execute 21 sec latency 28302.393 ms 1 461 0.00 MB/sec execute 22 sec latency 29306.060 ms oleg443-server: oleg443-server.virtnet: executing set_default_debug -1 all 1 461 0.00 MB/sec execute 23 sec latency 30306.366 ms pdsh@oleg443-client: oleg443-server: ssh exited with exit code 1 1 461 0.00 MB/sec execute 24 sec latency 31307.043 ms Started lustre-MDT0000 12:52:51 (1784047971) targets are mounted 12:52:51 (1784047971) facet_failover done 1 461 0.00 MB/sec execute 25 sec latency 32313.275 ms 1 461 0.00 MB/sec execute 26 sec latency 33313.492 ms 1 493 0.04 MB/sec execute 27 sec latency 33620.718 ms 1 542 0.10 MB/sec execute 28 sec latency 115.440 ms 1 589 0.14 MB/sec execute 29 sec latency 565.292 ms 1 655 0.16 MB/sec execute 30 sec latency 81.838 ms oleg443-client.virtnet: executing wait_import_state_mount (FULL|IDLE) mdc.lustre-MDT0000-mdc-*.mds_server_uuid 1475 0 1 702 0.16 MB/sec execute 31 sec latency 100.505 ms mdc.lustre-MDT0000-mdc-*.mds_server_uuid in FULL state after 0 sec 1 738 0.16 MB/sec execute 32 sec latency 102.639 ms 1 786 0.16 MB/sec execute 33 sec latency 87.934 ms 1 827 0.16 MB/sec execute 34 sec latency 89.074 ms 1 885 0.16 MB/sec execute 35 sec latency 92.445 ms 1 923 0.16 MB/sec execute 36 sec latency 95.375 ms 1 971 0.15 MB/sec execute 37 sec latency 102.689 ms UUID 1K-blocks Used Available Use% Mounted on lustre-MDT0000_UUID 1414116 2156 1269148 1% /mnt/lustre[MDT:0] lustre-MDT0001_UUID 1414116 1928 1269376 1% /mnt/lustre[MDT:1] lustre-OST0000_UUID 3833116 8468 3594388 1% /mnt/lustre[OST:0] lustre-OST0001_UUID 3833116 45852 3559804 2% /mnt/lustre[OST:1] filesystem_summary: 7666232 54320 7154192 1% /mnt/lustre 1 1033 0.18 MB/sec execute 38 sec latency 90.332 ms 1 1084 0.17 MB/sec execute 39 sec latency 89.198 ms 1 1136 0.17 MB/sec execute 40 sec latency 102.918 ms 1 1172 0.17 MB/sec execute 41 sec latency 231.622 ms 1 1173 0.16 MB/sec execute 42 sec latency 1165.181 ms 1 1200 0.16 MB/sec execute 43 sec latency 334.020 ms 1 1242 0.16 MB/sec execute 44 sec latency 86.891 ms 1 1281 0.15 MB/sec execute 45 sec latency 110.921 ms 1 1405 0.21 MB/sec execute 46 sec latency 94.754 ms 1 1451 0.21 MB/sec execute 47 sec latency 110.165 ms test_26 fail mds2 2 times 1 1493 0.21 MB/sec execute 48 sec latency 97.630 ms Failing mds2 on oleg443-server 1 1538 0.20 MB/sec execute 49 sec latency 96.394 ms Stopping /mnt/lustre-mds2 (opts:) on oleg443-server 1 1582 0.20 MB/sec execute 50 sec latency 58.486 ms 1 1627 0.20 MB/sec execute 51 sec latency 101.888 ms 1 1678 0.19 MB/sec execute 52 sec latency 77.385 ms 12:53:19 (1784047999) shut down facet: mds2 facet_host: oleg443-server facet_failover_host: oleg443-server 1 1736 0.19 MB/sec execute 53 sec latency 90.174 ms 1 1821 0.19 MB/sec execute 54 sec latency 77.036 ms 1 1877 0.19 MB/sec execute 55 sec latency 83.723 ms 1 1973 0.18 MB/sec execute 56 sec latency 77.904 ms 1 2024 0.18 MB/sec execute 57 sec latency 72.909 ms 1 2112 0.18 MB/sec execute 58 sec latency 68.690 ms 1 2168 0.18 MB/sec execute 59 sec latency 97.754 ms 1 2251 0.18 MB/sec execute 60 sec latency 73.495 ms 1 2259 0.17 MB/sec execute 61 sec latency 933.668 ms 1 2259 0.17 MB/sec execute 62 sec latency 1933.997 ms Failover mds2 to oleg443-server 1 2259 0.17 MB/sec execute 63 sec latency 2934.155 ms mount facets: mds2 1 2259 0.17 MB/sec execute 64 sec latency 3934.353 ms 1 2259 0.16 MB/sec execute 65 sec latency 4935.097 ms 1 2259 0.16 MB/sec execute 66 sec latency 5936.482 ms 1 2259 0.16 MB/sec execute 67 sec latency 6938.893 ms 1 2259 0.16 MB/sec execute 68 sec latency 7939.364 ms 1 2259 0.15 MB/sec execute 69 sec latency 8939.629 ms 1 2259 0.15 MB/sec execute 70 sec latency 9940.177 ms Start mds2: mount -t lustre -o localrecov /dev/mapper/mds2_flakey /mnt/lustre-mds2 1 2259 0.15 MB/sec execute 71 sec latency 10940.429 ms 1 2259 0.15 MB/sec execute 72 sec latency 11941.961 ms 1 2259 0.15 MB/sec execute 73 sec latency 12942.944 ms 1 2259 0.14 MB/sec execute 74 sec latency 13945.606 ms 1 2259 0.14 MB/sec execute 75 sec latency 14947.970 ms oleg443-server: oleg443-server.virtnet: executing set_default_debug -1 all 1 2259 0.14 MB/sec execute 76 sec latency 15948.361 ms pdsh@oleg443-client: oleg443-server: ssh exited with exit code 1 1 2259 0.14 MB/sec execute 77 sec latency 16951.828 ms Started lustre-MDT0001 12:53:44 (1784048024) targets are mounted 12:53:44 (1784048024) facet_failover done 1 2259 0.14 MB/sec execute 78 sec latency 17951.988 ms 1 2305 0.15 MB/sec execute 79 sec latency 18527.332 ms 1 2368 0.15 MB/sec execute 80 sec latency 89.191 ms 1 2412 0.15 MB/sec execute 81 sec latency 94.398 ms 1 2462 0.15 MB/sec execute 82 sec latency 77.933 ms 1 2559 0.15 MB/sec execute 83 sec latency 83.949 ms oleg443-client.virtnet: executing wait_import_state_mount (FULL|IDLE) mdc.lustre-MDT0001-mdc-*.mds_server_uuid 1475 0 1 2597 0.15 MB/sec execute 84 sec latency 76.766 ms mdc.lustre-MDT0001-mdc-*.mds_server_uuid in FULL state after 0 sec 1 2768 0.19 MB/sec execute 85 sec latency 84.493 ms 1 2906 0.19 MB/sec execute 86 sec latency 81.082 ms 1 2989 0.20 MB/sec execute 87 sec latency 66.722 ms 1 3176 0.20 MB/sec execute 88 sec latency 88.004 ms 1 3263 0.21 MB/sec execute 89 sec latency 82.133 ms 1 3353 0.21 MB/sec execute 90 sec latency 77.664 ms UUID 1K-blocks Used Available Use% Mounted on lustre-MDT0000_UUID 1414116 2384 1268920 1% /mnt/lustre[MDT:0] lustre-MDT0001_UUID 1414116 2144 1269160 1% /mnt/lustre[MDT:1] lustre-OST0000_UUID 3833116 12704 3592248 1% /mnt/lustre[OST:0] lustre-OST0001_UUID 3833116 56512 3546680 2% /mnt/lustre[OST:1] filesystem_summary: 7666232 69216 7138928 1% /mnt/lustre 1 3493 0.24 MB/sec execute 91 sec latency 95.068 ms 1 3579 0.24 MB/sec execute 92 sec latency 49.462 ms 1 3653 0.24 MB/sec execute 93 sec latency 63.688 ms 1 3714 0.24 MB/sec execute 94 sec latency 65.978 ms 1 3788 0.25 MB/sec execute 95 sec latency 78.796 ms 1 3835 0.25 MB/sec execute 96 sec latency 79.515 ms 1 3890 0.24 MB/sec execute 97 sec latency 62.853 ms 1 3947 0.24 MB/sec execute 98 sec latency 74.627 ms test_26 fail mds1 3 times 1 3995 0.24 MB/sec execute 99 sec latency 80.032 ms Failing mds1 on oleg443-server 1 cleanup 100 sec Stopping /mnt/lustre-mds1 (opts:) on oleg443-server 1 cleanup 101 sec 1 cleanup 102 sec 12:54:09 (1784048049) shut down facet: mds1 facet_host: oleg443-server facet_failover_host: oleg443-server 1 cleanup 103 sec 1 cleanup 104 sec 1 cleanup 105 sec 1 cleanup 106 sec 1 cleanup 107 sec 1 cleanup 108 sec 1 cleanup 109 sec 1 cleanup 110 sec 1 cleanup 111 sec 1 cleanup 112 sec 1 cleanup 113 sec Failover mds1 to oleg443-server mount facets: mds1 1 cleanup 114 sec 1 cleanup 115 sec 1 cleanup 116 sec 1 cleanup 117 sec 1 cleanup 118 sec 1 cleanup 119 sec 1 cleanup 120 sec 1 cleanup 121 sec Start mds1: mount -t lustre -o localrecov /dev/mapper/mds1_flakey /mnt/lustre-mds1 1 cleanup 122 sec 1 cleanup 123 sec 1 cleanup 124 sec 1 cleanup 125 sec 1 cleanup 126 sec 1 cleanup 127 sec 1 cleanup 128 sec 1 cleanup 129 sec 1 cleanup 130 sec 1 cleanup 131 sec 1 cleanup 132 sec oleg443-server: oleg443-server.virtnet: executing set_default_debug -1 all 1 cleanup 133 sec pdsh@oleg443-client: oleg443-server: ssh exited with exit code 1 1 cleanup 134 sec Started lustre-MDT0000 12:54:41 (1784048081) targets are mounted 12:54:41 (1784048081) facet_failover done 1 cleanup 135 sec 1 cleanup 136 sec 1 cleanup 137 sec 0 cleanup 138 sec Operation Count AvgLat MaxLat ---------------------------------------- NTCreateX 607 128.406 33620.701 Close 452 9.496 36.660 Rename 26 72.952 149.860 Unlink 96 20.986 44.361 Qpathinfo 533 12.906 80.122 Qfileinfo 119 2.109 20.978 Qfsinfo 100 2.165 17.791 Sfileinfo 50 51.329 102.605 Find 201 9.427 46.288 WriteX 399 11.267 53.570 ReadX 956 1.098 85.269 LockX 2 9.242 14.509 UnlockX 2 9.011 10.702 Flush 43 48.134 100.486 Throughput 0.241037 MB/sec 1 clients 1 procs max_latency=33620.718 ms stopping dbench on /mnt/lustre at Tue Jul 14 12:54:44 EDT 2026 with return code 0 clean dbench files on /mnt/lustre /mnt/lustre /mnt/lustre removed 'client.txt' /mnt/lustre dbench successfully finished striped dir -i0 -c2 -H crush2 /mnt/lustre2/d26.replay-dual/run_dbench oleg443-client.virtnet: executing wait_import_state_mount (FULL|IDLE) mdc.lustre-MDT0000-mdc-*.mds_server_uuid 1475 0 mdc.lustre-MDT0000-mdc-*.mds_server_uuid in FULL state after 0 sec looking for dbench program /usr/bin/dbench found dbench client file /usr/share/dbench/client.txt '/usr/share/dbench/client.txt' -> 'client.txt' running 'dbench 1 -D /mnt/lustre2/d26.replay-dual/run_dbench -t 100' on /mnt/lustre at Tue Jul 14 12:54:52 EDT 2026 waiting for dbench pid 68827 dbench version 4.00 - Copyright Andrew Tridgell 1999-2004 Running for 100 seconds with load 'client.txt' and minimum warmup 20 secs 0 of 1 processes prepared for launch 0 sec 1 of 1 processes prepared for launch 0 sec releasing clients 1 31 1.05 MB/sec warmup 1 sec latency 14.234 ms 1 111 2.62 MB/sec warmup 2 sec latency 97.920 ms 1 155 2.18 MB/sec warmup 3 sec latency 123.869 ms UUID 1K-blocks Used Available Use% Mounted on lustre-MDT0000_UUID 1414116 2904 1268400 1% /mnt/lustre[MDT:0] lustre-MDT0001_UUID 1414116 2616 1268688 1% /mnt/lustre[MDT:1] lustre-OST0000_UUID 3833116 2492 3604248 1% /mnt/lustre[OST:0] lustre-OST0001_UUID 3833116 46180 3559144 2% /mnt/lustre[OST:1] filesystem_summary: 7666232 48672 7163392 1% /mnt/lustre 1 184 1.85 MB/sec warmup 4 sec latency 373.268 ms 1 231 1.78 MB/sec warmup 5 sec latency 377.947 ms 1 287 1.78 MB/sec warmup 6 sec latency 104.776 ms 1 332 1.71 MB/sec warmup 7 sec latency 109.682 ms 1 380 1.70 MB/sec warmup 8 sec latency 115.913 ms 1 413 1.62 MB/sec warmup 9 sec latency 137.064 ms 1 453 1.59 MB/sec warmup 10 sec latency 123.147 ms 1 490 1.55 MB/sec warmup 11 sec latency 118.532 ms test_26 fail mds2 4 times 1 526 1.51 MB/sec warmup 12 sec latency 136.337 ms 1 609 1.61 MB/sec warmup 13 sec latency 96.791 ms Failing mds2 on oleg443-server 1 674 1.51 MB/sec warmup 14 sec latency 89.749 ms Stopping /mnt/lustre-mds2 (opts:) on oleg443-server 1 712 1.41 MB/sec warmup 15 sec latency 125.762 ms 1 743 1.33 MB/sec warmup 16 sec latency 122.787 ms 1 801 1.26 MB/sec warmup 17 sec latency 97.187 ms 1 861 1.20 MB/sec warmup 18 sec latency 94.373 ms 1 884 1.14 MB/sec warmup 19 sec latency 510.004 ms 1 949 0.12 MB/sec execute 1 sec latency 1043.937 ms 1 983 0.11 MB/sec execute 2 sec latency 85.647 ms 12:55:15 (1784048115) shut down 1 995 0.08 MB/sec execute 3 sec latency 581.692 ms facet: mds2 facet_host: oleg443-server facet_failover_host: oleg443-server 1 995 0.06 MB/sec execute 4 sec latency 1581.926 ms 1 995 0.05 MB/sec execute 5 sec latency 2582.337 ms 1 995 0.04 MB/sec execute 6 sec latency 3583.190 ms 1 995 0.03 MB/sec execute 7 sec latency 4584.027 ms 1 995 0.03 MB/sec execute 8 sec latency 5584.687 ms 1 995 0.03 MB/sec execute 9 sec latency 6584.983 ms 1 995 0.02 MB/sec execute 10 sec latency 7585.116 ms 1 995 0.02 MB/sec execute 11 sec latency 8585.466 ms 1 995 0.02 MB/sec execute 12 sec latency 9585.724 ms 1 995 0.02 MB/sec execute 13 sec latency 10586.735 ms Failover mds2 to oleg443-server mount facets: mds2 1 995 0.02 MB/sec execute 14 sec latency 11586.950 ms 1 995 0.02 MB/sec execute 15 sec latency 12587.388 ms 1 995 0.01 MB/sec execute 16 sec latency 13587.620 ms 1 995 0.01 MB/sec execute 17 sec latency 14593.972 ms 1 995 0.01 MB/sec execute 18 sec latency 15594.216 ms 1 995 0.01 MB/sec execute 19 sec latency 16594.475 ms 1 995 0.01 MB/sec execute 20 sec latency 17595.073 ms 1 995 0.01 MB/sec execute 21 sec latency 18596.425 ms 1 995 0.01 MB/sec execute 22 sec latency 19596.655 ms Start mds2: mount -t lustre -o localrecov /dev/mapper/mds2_flakey /mnt/lustre-mds2 1 995 0.01 MB/sec execute 23 sec latency 20597.030 ms 1 995 0.01 MB/sec execute 24 sec latency 21597.237 ms 1 995 0.01 MB/sec execute 25 sec latency 22598.546 ms 1 995 0.01 MB/sec execute 26 sec latency 23598.760 ms 1 995 0.01 MB/sec execute 27 sec latency 24599.142 ms oleg443-server: oleg443-server.virtnet: executing set_default_debug -1 all 1 995 0.01 MB/sec execute 28 sec latency 25599.379 ms pdsh@oleg443-client: oleg443-server: ssh exited with exit code 1 1 995 0.01 MB/sec execute 29 sec latency 26599.602 ms Started lustre-MDT0001 12:55:41 (1784048141) targets are mounted 12:55:41 (1784048141) facet_failover done 1 995 0.01 MB/sec execute 30 sec latency 27600.297 ms 1 1011 0.02 MB/sec execute 31 sec latency 27973.152 ms 1 1077 0.04 MB/sec execute 32 sec latency 129.008 ms 1 1134 0.04 MB/sec execute 33 sec latency 76.602 ms 1 1179 0.04 MB/sec execute 34 sec latency 118.793 ms 1 1229 0.04 MB/sec execute 35 sec latency 71.272 ms oleg443-client.virtnet: executing wait_import_state_mount (FULL|IDLE) mdc.lustre-MDT0001-mdc-*.mds_server_uuid 1475 0 1 1272 0.04 MB/sec execute 36 sec latency 89.423 ms mdc.lustre-MDT0001-mdc-*.mds_server_uuid in FULL state after 0 sec 1 1399 0.12 MB/sec execute 37 sec latency 96.039 ms 1 1447 0.11 MB/sec execute 38 sec latency 84.427 ms 1 1496 0.11 MB/sec execute 39 sec latency 260.285 ms 1 1558 0.11 MB/sec execute 40 sec latency 71.031 ms 1 1643 0.11 MB/sec execute 41 sec latency 61.627 ms 1 1689 0.11 MB/sec execute 42 sec latency 112.899 ms tar: Unexpected EOF in archive tar: Unexpected EOF in archive 1 1771 0.11 MB/sec execute 43 sec latency 74.759 ms 1 1836 0.11 MB/sec execute 44 sec latency 83.174 ms 1 1888 0.10 MB/sec execute 45 sec latency 78.398 ms 1 1963 0.10 MB/sec execute 46 sec latency 82.231 ms 1 2006 0.10 MB/sec execute 47 sec latency 81.837 ms 1 2055 0.10 MB/sec execute 48 sec latency 103.686 ms 1 2118 0.10 MB/sec execute 49 sec latency 111.200 ms 1 2158 0.10 MB/sec execute 50 sec latency 225.523 ms 1 2193 0.10 MB/sec execute 51 sec latency 116.162 ms 1 2306 0.12 MB/sec execute 52 sec latency 73.793 ms tar: Error is not recoverable: exiting now 1 2372 0.12 MB/sec execute 53 sec latency 70.728 ms dbench killed by signal 15 stopping dbench on /mnt/lustre at Tue Jul 14 12:56:05 EDT 2026 with return code 0 68827 pts/0 S+ 0:00 dbench -c client.txt 1 -D /mnt/lustre2/d26.replay-dual/run_dbench -t 100 killed dbench main pid 68827 clean dbench files on /mnt/lustre /mnt/lustre /mnt/lustre removed 'client.txt' /mnt/lustre dbench successfully finished