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I tested the performance with obdfilter-survey, the max performance is 732MB/s;
Result as follow：
[root@50:B3:42:00:00:F4 node]# nobjhi=1 thrhi=2 size=40960 case=disk sh obdfilter-survey
Tue May 7 15:52:33 CST 2013 Obdfilter-survey for case=disk from 50:B3:42:00:00:F4
ost 4 sz 167772160K rsz 1024K obj 4 thr 4 write 722.96 [ 143.90, 342.60] rewrite 732.23 [ 155.69, 205.75] read 790.50 [ 125.87, 228.77]
ost 4 sz 167772160K rsz 1024K obj 4 thr 8 write 712.76 [ 145.78, 193.74] rewrite 714.39 [ 159.78, 196.75] read 940.83 [ 197.79, 258.72]
I tested the performance with dd （oflag=direct） on the same devices, the max performance is 1038MB/s;
So I want to know if Lustrefs support direct mode?
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