== sanity test 398c: run fio to test AIO ================= 09:12:35 (1787836355)
/usr/bin/fio
debug=0
40+0 records in
40+0 records out
41943040 bytes (42 MB, 40 MiB) copied, 0.641046 s, 65.4 MB/s
osc.lustre-OST0000-osc-ffff9335606ba000.rpc_stats=clear
writing 40M to OST0 by fio with 4 jobs...
rand-write: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=16
...
fio-3.19
Starting 4 processes

rand-write: (groupid=0, jobs=1): err= 0: pid=145409: Thu Aug 27 09:15:39 2026
  write: IOPS=14, BW=59.4KiB/s (60.8kB/s)(10.0MiB/172424msec); 0 zone resets
    slat (usec): min=28, max=24685, avg=287.93, stdev=1144.76
    clat (msec): min=281, max=2175, avg=1076.39, stdev=289.76
     lat (msec): min=281, max=2175, avg=1076.68, stdev=289.79
    clat percentiles (msec):
     |  1.00th=[  330],  5.00th=[  567], 10.00th=[  760], 20.00th=[  877],
     | 30.00th=[  936], 40.00th=[ 1003], 50.00th=[ 1062], 60.00th=[ 1133],
     | 70.00th=[ 1200], 80.00th=[ 1284], 90.00th=[ 1435], 95.00th=[ 1569],
     | 99.00th=[ 1838], 99.50th=[ 1938], 99.90th=[ 2056], 99.95th=[ 2165],
     | 99.99th=[ 2165]
   bw (  KiB/s): min=    7, max=  232, per=26.53%, avg=62.87, stdev=32.44, samples=320
   iops        : min=    1, max=   58, avg=15.22, stdev= 8.13, samples=320
  lat (msec)   : 500=3.28%, 750=5.86%, 1000=30.82%, 2000=59.57%, >=2000=0.47%
  cpu          : usr=0.06%, sys=0.25%, ctx=1819, majf=0, minf=9
  IO depths    : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued rwts: total=0,2560,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=16
rand-write: (groupid=0, jobs=1): err= 0: pid=145410: Thu Aug 27 09:15:39 2026
  write: IOPS=14, BW=59.5KiB/s (60.9kB/s)(10.0MiB/172217msec); 0 zone resets
    slat (usec): min=29, max=20544, avg=302.22, stdev=1174.37
    clat (msec): min=147, max=2255, avg=1075.42, stdev=298.21
     lat (msec): min=147, max=2255, avg=1075.72, stdev=298.17
    clat percentiles (msec):
     |  1.00th=[  347],  5.00th=[  584], 10.00th=[  760], 20.00th=[  860],
     | 30.00th=[  936], 40.00th=[ 1003], 50.00th=[ 1053], 60.00th=[ 1116],
     | 70.00th=[ 1200], 80.00th=[ 1284], 90.00th=[ 1435], 95.00th=[ 1603],
     | 99.00th=[ 1938], 99.50th=[ 2022], 99.90th=[ 2232], 99.95th=[ 2232],
     | 99.99th=[ 2265]
   bw (  KiB/s): min=    7, max=  160, per=25.03%, avg=59.31, stdev=29.15, samples=339
   iops        : min=    1, max=   40, avg=14.32, stdev= 7.31, samples=339
  lat (msec)   : 250=0.35%, 500=3.01%, 750=5.98%, 1000=30.70%, 2000=59.22%
  lat (msec)   : >=2000=0.74%
  cpu          : usr=0.05%, sys=0.23%, ctx=1888, majf=0, minf=10
  IO depths    : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued rwts: total=0,2560,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=16
rand-write: (groupid=0, jobs=1): err= 0: pid=145411: Thu Aug 27 09:15:39 2026
  write: IOPS=14, BW=59.4KiB/s (60.8kB/s)(10.0MiB/172402msec); 0 zone resets
    slat (usec): min=31, max=12951, avg=286.40, stdev=963.47
    clat (msec): min=300, max=2165, avg=1076.27, stdev=289.13
     lat (msec): min=301, max=2165, avg=1076.56, stdev=289.17
    clat percentiles (msec):
     |  1.00th=[  347],  5.00th=[  609], 10.00th=[  751], 20.00th=[  860],
     | 30.00th=[  936], 40.00th=[ 1003], 50.00th=[ 1062], 60.00th=[ 1116],
     | 70.00th=[ 1200], 80.00th=[ 1284], 90.00th=[ 1452], 95.00th=[ 1586],
     | 99.00th=[ 1854], 99.50th=[ 1921], 99.90th=[ 2089], 99.95th=[ 2089],
     | 99.99th=[ 2165]
   bw (  KiB/s): min=    7, max=  200, per=25.57%, avg=60.59, stdev=29.67, samples=332
   iops        : min=    1, max=   50, avg=14.65, stdev= 7.43, samples=332
  lat (msec)   : 500=3.36%, 750=6.33%, 1000=29.26%, 2000=60.62%, >=2000=0.43%
  cpu          : usr=0.04%, sys=0.25%, ctx=1986, majf=0, minf=9
  IO depths    : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued rwts: total=0,2560,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=16
rand-write: (groupid=0, jobs=1): err= 0: pid=145412: Thu Aug 27 09:15:39 2026
  write: IOPS=14, BW=59.5KiB/s (60.9kB/s)(10.0MiB/172142msec); 0 zone resets
    slat (usec): min=30, max=15828, avg=248.11, stdev=894.96
    clat (msec): min=274, max=2261, avg=1074.31, stdev=298.18
     lat (msec): min=274, max=2261, avg=1074.56, stdev=298.19
    clat percentiles (msec):
     |  1.00th=[  326],  5.00th=[  542], 10.00th=[  768], 20.00th=[  852],
     | 30.00th=[  927], 40.00th=[  995], 50.00th=[ 1053], 60.00th=[ 1116],
     | 70.00th=[ 1200], 80.00th=[ 1301], 90.00th=[ 1435], 95.00th=[ 1586],
     | 99.00th=[ 1888], 99.50th=[ 2039], 99.90th=[ 2140], 99.95th=[ 2165],
     | 99.99th=[ 2265]
   bw (  KiB/s): min=    7, max=  184, per=25.48%, avg=60.40, stdev=29.09, samples=333
   iops        : min=    1, max=   46, avg=14.60, stdev= 7.29, samples=333
  lat (msec)   : 500=3.83%, 750=5.47%, 1000=31.72%, 2000=58.20%, >=2000=0.78%
  cpu          : usr=0.05%, sys=0.22%, ctx=1834, majf=0, minf=10
  IO depths    : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued rwts: total=0,2560,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=16

Run status group 0 (all jobs):
  WRITE: bw=238KiB/s (243kB/s), 59.4KiB/s-59.5KiB/s (60.8kB/s-60.9kB/s), io=40.0MiB (41.9MB), run=172142-172424msec
mix rw 40M to OST0 by fio with 4 jobs...
rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=16
...
fio-3.19
Starting 4 processes

rand-rw: (groupid=0, jobs=1): err= 0: pid=145447: Thu Aug 27 09:18:24 2026
  read: IOPS=8, BW=32.6KiB/s (33.4kB/s)(5048KiB/154652msec)
    slat (msec): min=3, max=100, avg=19.33, stdev=11.45
    clat (msec): min=23, max=1637, avg=596.57, stdev=231.11
     lat (msec): min=31, max=1657, avg=615.91, stdev=234.20
    clat percentiles (msec):
     |  1.00th=[  157],  5.00th=[  305], 10.00th=[  347], 20.00th=[  405],
     | 30.00th=[  451], 40.00th=[  502], 50.00th=[  558], 60.00th=[  625],
     | 70.00th=[  684], 80.00th=[  768], 90.00th=[  927], 95.00th=[ 1011],
     | 99.00th=[ 1267], 99.50th=[ 1401], 99.90th=[ 1469], 99.95th=[ 1636],
     | 99.99th=[ 1636]
   bw (  KiB/s): min=    7, max=   95, per=25.83%, avg=33.32, stdev=18.46, samples=295
   iops        : min=    1, max=   23, avg= 7.77, stdev= 4.64, samples=295
  write: IOPS=8, BW=33.6KiB/s (34.4kB/s)(5192KiB/154652msec); 0 zone resets
    slat (usec): min=32, max=15883, avg=333.67, stdev=1009.54
    clat (msec): min=496, max=3330, avg=1302.61, stdev=476.46
     lat (msec): min=496, max=3330, avg=1302.94, stdev=476.45
    clat percentiles (msec):
     |  1.00th=[  584],  5.00th=[  718], 10.00th=[  810], 20.00th=[  927],
     | 30.00th=[ 1011], 40.00th=[ 1099], 50.00th=[ 1217], 60.00th=[ 1318],
     | 70.00th=[ 1469], 80.00th=[ 1653], 90.00th=[ 1905], 95.00th=[ 2232],
     | 99.00th=[ 3004], 99.50th=[ 3104], 99.90th=[ 3205], 99.95th=[ 3339],
     | 99.99th=[ 3339]
   bw (  KiB/s): min=    7, max=   95, per=25.13%, avg=33.68, stdev=18.80, samples=299
   iops        : min=    1, max=   23, avg= 7.86, stdev= 4.73, samples=299
  lat (msec)   : 50=0.31%, 100=0.16%, 250=0.47%, 500=18.63%, 750=22.30%
  lat (msec)   : 1000=19.65%, 2000=34.45%, >=2000=4.02%
  cpu          : usr=0.09%, sys=0.55%, ctx=4344, majf=0, minf=12
  IO depths    : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued rwts: total=1262,1298,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=16
rand-rw: (groupid=0, jobs=1): err= 0: pid=145448: Thu Aug 27 09:18:24 2026
  read: IOPS=8, BW=32.2KiB/s (32.9kB/s)(4976KiB/154651msec)
    slat (usec): min=37, max=72426, avg=18918.80, stdev=11090.35
    clat (msec): min=21, max=1682, avg=593.79, stdev=230.17
     lat (msec): min=31, max=1723, avg=612.72, stdev=233.09
    clat percentiles (msec):
     |  1.00th=[  121],  5.00th=[  309], 10.00th=[  351], 20.00th=[  405],
     | 30.00th=[  456], 40.00th=[  502], 50.00th=[  558], 60.00th=[  625],
     | 70.00th=[  676], 80.00th=[  751], 90.00th=[  902], 95.00th=[ 1003],
     | 99.00th=[ 1351], 99.50th=[ 1485], 99.90th=[ 1620], 99.95th=[ 1687],
     | 99.99th=[ 1687]
   bw (  KiB/s): min=    7, max=   95, per=25.78%, avg=33.26, stdev=19.68, samples=291
   iops        : min=    1, max=   23, avg= 7.76, stdev= 4.93, samples=291
  write: IOPS=8, BW=34.0KiB/s (34.9kB/s)(5264KiB/154651msec); 0 zone resets
    slat (usec): min=30, max=9605, avg=296.43, stdev=755.78
    clat (msec): min=288, max=3262, avg=1299.04, stdev=479.71
     lat (msec): min=288, max=3262, avg=1299.34, stdev=479.69
    clat percentiles (msec):
     |  1.00th=[  485],  5.00th=[  709], 10.00th=[  793], 20.00th=[  902],
     | 30.00th=[ 1003], 40.00th=[ 1116], 50.00th=[ 1217], 60.00th=[ 1334],
     | 70.00th=[ 1502], 80.00th=[ 1653], 90.00th=[ 1871], 95.00th=[ 2123],
     | 99.00th=[ 3004], 99.50th=[ 3138], 99.90th=[ 3239], 99.95th=[ 3272],
     | 99.99th=[ 3272]
   bw (  KiB/s): min=    7, max=   96, per=25.94%, avg=34.76, stdev=18.82, samples=294
   iops        : min=    1, max=   24, avg= 8.14, stdev= 4.74, samples=294
  lat (msec)   : 50=0.12%, 100=0.27%, 250=0.70%, 500=18.71%, 750=22.23%
  lat (msec)   : 1000=19.30%, 2000=34.96%, >=2000=3.71%
  cpu          : usr=0.09%, sys=0.54%, ctx=4347, majf=0, minf=16
  IO depths    : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued rwts: total=1244,1316,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=16
rand-rw: (groupid=0, jobs=1): err= 0: pid=145449: Thu Aug 27 09:18:24 2026
  read: IOPS=8, BW=32.2KiB/s (32.9kB/s)(4984KiB/154890msec)
    slat (msec): min=2, max=104, avg=19.08, stdev=11.46
    clat (msec): min=15, max=1477, avg=586.94, stdev=217.37
     lat (msec): min=34, max=1502, avg=606.04, stdev=220.21
    clat percentiles (msec):
     |  1.00th=[  201],  5.00th=[  321], 10.00th=[  351], 20.00th=[  414],
     | 30.00th=[  456], 40.00th=[  498], 50.00th=[  550], 60.00th=[  609],
     | 70.00th=[  667], 80.00th=[  743], 90.00th=[  860], 95.00th=[  995],
     | 99.00th=[ 1301], 99.50th=[ 1368], 99.90th=[ 1469], 99.95th=[ 1485],
     | 99.99th=[ 1485]
   bw (  KiB/s): min=    7, max=  111, per=26.31%, avg=33.94, stdev=19.63, samples=287
   iops        : min=    1, max=   27, avg= 7.93, stdev= 4.92, samples=287
  write: IOPS=8, BW=33.9KiB/s (34.7kB/s)(5256KiB/154890msec); 0 zone resets
    slat (usec): min=35, max=19443, avg=330.20, stdev=1146.69
    clat (msec): min=221, max=3156, avg=1307.87, stdev=479.32
     lat (msec): min=221, max=3156, avg=1308.21, stdev=479.31
    clat percentiles (msec):
     |  1.00th=[  575],  5.00th=[  726], 10.00th=[  802], 20.00th=[  919],
     | 30.00th=[ 1020], 40.00th=[ 1116], 50.00th=[ 1217], 60.00th=[ 1334],
     | 70.00th=[ 1469], 80.00th=[ 1670], 90.00th=[ 1921], 95.00th=[ 2165],
     | 99.00th=[ 3004], 99.50th=[ 3071], 99.90th=[ 3138], 99.95th=[ 3171],
     | 99.99th=[ 3171]
   bw (  KiB/s): min=    7, max=   80, per=25.11%, avg=33.65, stdev=17.43, samples=302
   iops        : min=    1, max=   20, avg= 7.85, stdev= 4.40, samples=302
  lat (msec)   : 20=0.04%, 50=0.08%, 100=0.27%, 250=0.23%, 500=19.38%
  lat (msec)   : 750=22.42%, 1000=18.12%, 2000=35.74%, >=2000=3.71%
  cpu          : usr=0.09%, sys=0.54%, ctx=4283, majf=0, minf=13
  IO depths    : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued rwts: total=1246,1314,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=16
rand-rw: (groupid=0, jobs=1): err= 0: pid=145450: Thu Aug 27 09:18:24 2026
  read: IOPS=8, BW=32.7KiB/s (33.5kB/s)(5060KiB/154647msec)
    slat (usec): min=3432, max=90054, avg=19438.47, stdev=11655.63
    clat (msec): min=43, max=1696, avg=603.42, stdev=223.83
     lat (msec): min=52, max=1717, avg=622.86, stdev=226.87
    clat percentiles (msec):
     |  1.00th=[  228],  5.00th=[  330], 10.00th=[  363], 20.00th=[  418],
     | 30.00th=[  468], 40.00th=[  518], 50.00th=[  575], 60.00th=[  625],
     | 70.00th=[  684], 80.00th=[  768], 90.00th=[  877], 95.00th=[ 1020],
     | 99.00th=[ 1318], 99.50th=[ 1418], 99.90th=[ 1519], 99.95th=[ 1703],
     | 99.99th=[ 1703]
   bw (  KiB/s): min=    7, max=   88, per=26.25%, avg=33.86, stdev=18.69, samples=291
   iops        : min=    1, max=   22, avg= 7.91, stdev= 4.72, samples=291
  write: IOPS=8, BW=33.5KiB/s (34.3kB/s)(5180KiB/154647msec); 0 zone resets
    slat (usec): min=36, max=11335, avg=278.56, stdev=757.72
    clat (msec): min=478, max=3316, avg=1297.93, stdev=469.24
     lat (msec): min=478, max=3316, avg=1298.21, stdev=469.22
    clat percentiles (msec):
     |  1.00th=[  575],  5.00th=[  718], 10.00th=[  793], 20.00th=[  911],
     | 30.00th=[ 1003], 40.00th=[ 1133], 50.00th=[ 1217], 60.00th=[ 1334],
     | 70.00th=[ 1469], 80.00th=[ 1636], 90.00th=[ 1871], 95.00th=[ 2123],
     | 99.00th=[ 3104], 99.50th=[ 3171], 99.90th=[ 3272], 99.95th=[ 3306],
     | 99.99th=[ 3306]
   bw (  KiB/s): min=    7, max=  104, per=25.79%, avg=34.56, stdev=17.87, samples=291
   iops        : min=    1, max=   26, avg= 8.08, stdev= 4.48, samples=291
  lat (msec)   : 50=0.04%, 100=0.08%, 250=0.55%, 500=17.62%, 750=23.63%
  lat (msec)   : 1000=19.57%, 2000=35.00%, >=2000=3.52%
  cpu          : usr=0.09%, sys=0.52%, ctx=4325, majf=0, minf=14
  IO depths    : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued rwts: total=1265,1295,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=16

Run status group 0 (all jobs):
   READ: bw=130KiB/s (133kB/s), 32.2KiB/s-32.7KiB/s (32.9kB/s-33.5kB/s), io=19.6MiB (20.5MB), run=154647-154890msec
  WRITE: bw=135KiB/s (138kB/s), 33.5KiB/s-34.0KiB/s (34.3kB/s-34.9kB/s), io=20.4MiB (21.4MB), run=154647-154890msec
AIO with large block size 40M
rand-rw: (g=0): rw=randrw, bs=(R) 40.0MiB-40.0MiB, (W) 40.0MiB-40.0MiB, (T) 40.0MiB-40.0MiB, ioengine=libaio, iodepth=16
fio-3.19
Starting 1 process

rand-rw: (groupid=0, jobs=1): err= 0: pid=145477: Thu Aug 27 09:18:34 2026
  read: IOPS=1, BW=63.3MiB/s (66.4MB/s)(40.0MiB/632msec)
    slat (nsec): min=42092k, max=42092k, avg=42091898.00, stdev= 0.00
    clat (nsec): min=553061k, max=553061k, avg=553060969.00, stdev= 0.00
     lat (nsec): min=595157k, max=595157k, avg=595157238.00, stdev= 0.00
    clat percentiles (msec):
     |  1.00th=[  550],  5.00th=[  550], 10.00th=[  550], 20.00th=[  550],
     | 30.00th=[  550], 40.00th=[  550], 50.00th=[  550], 60.00th=[  550],
     | 70.00th=[  550], 80.00th=[  550], 90.00th=[  550], 95.00th=[  550],
     | 99.00th=[  550], 99.50th=[  550], 99.90th=[  550], 99.95th=[  550],
     | 99.99th=[  550]
  lat (msec)   : 750=100.00%
  cpu          : usr=0.00%, sys=2.38%, ctx=45, majf=0, minf=9
  IO depths    : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     issued rwts: total=1,0,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=16

Run status group 0 (all jobs):
   READ: bw=63.3MiB/s (66.4MB/s), 63.3MiB/s-63.3MiB/s (66.4MB/s-66.4MB/s), io=40.0MiB (41.9MB), run=632-632msec
debug=trace inode super iotrace malloc cache info ioctl neterror net warning buffs other dentry nettrace page dlmtrace error emerg ha rpctrace vfstrace reada mmap config console quota sec lfsck hsm snapshot layout