Hello DRBD users<br><br><br>I am using DRBD version 8.3.10.<br>I have no problems with creating DRBD resource.<br>The problem appear when i export drbd device over scst using blockio. <br>When i use fileio all looks to be fine, but i definitely see problem on blockio.<br>
Scst blockio is really important for me, so start using fileio is not a solution for me.<br><br><br>In "perfect world" in my understanding of protocol C in DRBD statistics oos should be 0. Both nodes should be connected, uptodate.<br>
But when i export for example /dev/drbd0 using scst blockio i can connect my initiator and write data. From initiator side i see no errors at all.<br>But on my servers i see:<br><br><br>1) Primary (iSCSI-SCST target)<br>
<br>version: 8.3.10 (api:88/proto:86-96)<br>GIT-hash: 5c0b0469666682443d4785d90a2c603378f9017b build by root@test2.box, 2011-02-15 17:12:46<br> 0: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate C r-----<br> ns:0 nr:0 dw:39304260 dr:90632 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:b oos:39254512<br>
<br><br>2) Secondary<br><br>version: 8.3.10 (api:88/proto:86-96)<br>GIT-hash: 5c0b0469666682443d4785d90a2c603378f9017b build by root@test1.box, 2011-02-15 17:12:46<br> 0: cs:Connected ro:Secondary/Primary ds:UpToDate/UpToDate C r-----<br>
ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:1 ap:0 ep:2 wo:b oos:0 <br><br clear="all"><br>After write about 35GB of data to my primary resource, secondary resource is reporting UpToDate state.<br>When i run on secondary resource: "drbdadm down repdata && drbd up repdata" sync process start.<br>
<br><br>I tried tcpdump between drbd resources and i can tell that there is no data traffic. <br>I tried lots of DRBD configuration but no luck. On default and minimal DRBD configuration it also doesn't sync the data.<br>
<br><br><br>Thank You for help and informations.<br><br>-- <br>Lucas<br>