=== fill to the wall ===
Filesystem    512-blocks Used  Avail Capacity  Mounted on
/dev/vn1@DATA     483328    0 483328     0%    /mnt/h33
FILL_PROG blocks=64 off=4194304 free_kb=241600
FILL_PROG blocks=128 off=8388608 free_kb=241600
FILL_PROG blocks=192 off=12582912 free_kb=239552
FILL_PROG blocks=256 off=16777216 free_kb=235456
FILL_PROG blocks=320 off=20971520 free_kb=231360
FILL_PROG blocks=384 off=25165824 free_kb=227264
FILL_PROG blocks=448 off=29360128 free_kb=223104
FILL_PROG blocks=512 off=33554432 free_kb=219008
FILL_PROG blocks=576 off=37748736 free_kb=214912
FILL_PROG blocks=640 off=41943040 free_kb=210816
FILL_PROG blocks=704 off=46137344 free_kb=206720
FILL_PROG blocks=768 off=50331648 free_kb=202624
FILL_PROG blocks=832 off=54525952 free_kb=198528
FILL_PROG blocks=896 off=58720256 free_kb=194368
FILL_PROG blocks=960 off=62914560 free_kb=190272
FILL_PROG blocks=1024 off=67108864 free_kb=186176
FILL_PROG blocks=1088 off=71303168 free_kb=182080
FILL_PROG blocks=1152 off=75497472 free_kb=177984
FILL_PROG blocks=1216 off=79691776 free_kb=173888
FILL_PROG blocks=1280 off=83886080 free_kb=169792
FILL_PROG blocks=1344 off=88080384 free_kb=165696
FILL_PROG blocks=1408 off=92274688 free_kb=161536
FILL_PROG blocks=1472 off=96468992 free_kb=157440
FILL_PROG blocks=1536 off=100663296 free_kb=153344
FILL_PROG blocks=1600 off=104857600 free_kb=149248
FILL_PROG blocks=1664 off=109051904 free_kb=145152
FILL_PROG blocks=1728 off=113246208 free_kb=141056
FILL_PROG blocks=1792 off=117440512 free_kb=136960
FILL_PROG blocks=1856 off=121634816 free_kb=132864
FILL_PROG blocks=1920 off=125829120 free_kb=128704
FILL_PROG blocks=1984 off=130023424 free_kb=124608
FILL_PROG blocks=2048 off=134217728 free_kb=120512
FILL_PROG blocks=2112 off=138412032 free_kb=116416
FILL_PROG blocks=2176 off=142606336 free_kb=112320
FILL_PROG blocks=2240 off=146800640 free_kb=108224
FILL_PROG blocks=2304 off=150994944 free_kb=104128
FILL_PROG blocks=2368 off=155189248 free_kb=100032
FILL_PROG blocks=2432 off=159383552 free_kb=95872
FILL_PROG blocks=2496 off=163577856 free_kb=91776
FILL_PROG blocks=2560 off=167772160 free_kb=87680
FILL_PROG blocks=2624 off=171966464 free_kb=83584
FILL_PROG blocks=2688 off=176160768 free_kb=79488
FILL_PROG blocks=2752 off=180355072 free_kb=75392
FILL_PROG blocks=2816 off=184549376 free_kb=71296
FILL_PROG blocks=2880 off=188743680 free_kb=67200
FILL_PROG blocks=2944 off=192937984 free_kb=63040
FILL_PROG blocks=3008 off=197132288 free_kb=58944
FILL_PROG blocks=3072 off=201326592 free_kb=54848
FILL_PROG blocks=3136 off=205520896 free_kb=50752
FILL_PROG blocks=3200 off=209715200 free_kb=46656
FILL_PROG blocks=3264 off=213909504 free_kb=42560
FILL_PROG blocks=3328 off=218103808 free_kb=38464
FILL_PROG blocks=3392 off=222298112 free_kb=34368
FILL_PROG blocks=3456 off=226492416 free_kb=30208
FILL_PROG blocks=3520 off=230686720 free_kb=26112
FILL_PROG blocks=3584 off=234881024 free_kb=21952
FILL_PROG blocks=3648 off=239075328 free_kb=17856
FILL_PROG blocks=3712 off=243269632 free_kb=13760
FILL_PROG blocks=3776 off=247463936 free_kb=9664
FILL_PROG blocks=3840 off=251658240 free_kb=5568
FILL_WRITE_FAIL block=3841 errno=28 (No space left on device)
FILL_DONE blocks=3841 off_ok=251723776 regime=0
FILL_FSYNC rc=-1 errno=28 (No space left on device)
FILL_CLOSE rc=0
NOTE exhaustion regime not reached
=== phase2 (post-wall probing) ===
REGIME_CREATES rc_ok=0 rc_fail=500 exist_now=0
APPEND_WRITE rc=-1 errno=28 (No space left on device)
APPEND_FSYNC rc=-1 errno=28 (No space left on device)
TAIL_OPEN_FAIL errno=28 (No space left on device)
MMAP_OPEN_FAIL errno=28 (No space left on device)
PHASE2_DONE
=== retry loop: do subsequent writes/fsyncs report the error? ===
RETRY_WRITE[0] rc=-1 errno=28 (No space left on device)
RETRY_WRITE[1] rc=-1 errno=28 (No space left on device)
RETRY_WRITE[2] rc=-1 errno=28 (No space left on device)
RETRY_WRITE[3] rc=-1 errno=28 (No space left on device)
RETRY_WRITE[4] rc=-1 errno=28 (No space left on device)
RETRY_FSYNC rc=-1 errno=28 (No space left on device)
RETRY_WRITE[0] rc=-1 errno=28 (No space left on device)
RETRY_WRITE[1] rc=-1 errno=28 (No space left on device)
RETRY_WRITE[2] rc=-1 errno=28 (No space left on device)
RETRY_WRITE[3] rc=-1 errno=28 (No space left on device)
RETRY_WRITE[4] rc=-1 errno=28 (No space left on device)
RETRY_FSYNC rc=-1 errno=28 (No space left on device)
=== healthy roundtrip ===
(umount of full fs may defer; continuing)
vnconfig: VNIOCATTACH: Device busy