Dear list,<br>I'm trying to build an Lustre file system with some fail-over nodes. I install drbd but realize it take very long time to do init sync.<br>Here is sum of my config:<br>CentOS5/drbd82<br>1 Gig-E, straight through cable connect via switch (iperf report 902MB/s) (I've tried straight cable direct connect but it seems slower)<br>
I/O Scheduler: headline<br>sync rate set to:60MB<br><br>And here what I got:<br><br><div style="margin-left: 40px;">[root@MGS2 ~]# cat /proc/drbd<br>version: 8.2.7 (api:88/proto:86-88)<br>GIT-hash: 61b7f4c2fc34fe3d2acf7be6bcc1fc2684708a7d build by root@localhost.localdomain, 2008-11-19 06:52:49<br>
0: cs:SyncTarget st:Secondary/Primary ds:Inconsistent/UpToDate C r---<br> ns:0 nr:6218720 dw:6210528 dr:0 al:0 bm:378 lo:258 pe:2683 ua:256 ap:0 ep:1 wo:b oos:92119808<br> [>...................] sync'ed: 6.4% (89960/96025)M<br>
finish: 6:08:03 speed: 4,164 (3,912) K/sec<br></div>I tried to Google. Seems many ppl have the same problem. I tried some solutions (run drbdadm adjust r0, tweak some config value, etc..) but the result was not changed.<br>
I don't sure where is bottle-neck. Have any software to benchmark harddisk?<br><br>Thanks!<br><br>-giobuon<br>