<div dir="ltr">Hello,<div><br></div><div>I am Software Manager in Mantech, and testing drbd 9.</div><div><br></div><div>some problems are occurred. CASE 12 is one of them.</div><div><br></div><div>[CASE 12] 2 primary split-brain is not detected.</div><div><br></div><div>Env:</div><div>- Linux VM 2 nodes </div><div>- Linux drbd version 9.0.0</div><div><br></div><div>Test scenario:</div><div><br></div><div>- 2 node's status is uptodate </div><div><br></div><div><table class="" style="border-collapse:collapse;margin:5px 0px 5px 2px;width:auto;color:rgb(51,51,51);font-family:Arial,sans-serif;font-size:14px;line-height:20px"><tbody><tr><th class="" style="border:1px solid rgb(204,204,204);padding:3px 4px;text-align:center;background:rgb(245,245,245)">node 1</th><th class="" style="border:1px solid rgb(204,204,204);padding:3px 4px;text-align:center;background:rgb(245,245,245)">node 2</th></tr><tr><td class="" style="border:1px solid rgb(204,204,204);padding:3px 4px">drbdadm disconnect r0</td><td class="" style="border:1px solid rgb(204,204,204);padding:3px 4px"> </td></tr><tr><td class="" style="border:1px solid rgb(204,204,204);padding:3px 4px">drbdadm primary r0</td><td class="" style="border:1px solid rgb(204,204,204);padding:3px 4px"> </td></tr><tr><td class="" style="border:1px solid rgb(204,204,204);padding:3px 4px">copy files on node1 </td><td class="" style="border:1px solid rgb(204,204,204);padding:3px 4px"> </td></tr><tr><td class="" style="border:1px solid rgb(204,204,204);padding:3px 4px"> </td><td class="" style="border:1px solid rgb(204,204,204);padding:3px 4px">drbdadm primary r0</td></tr><tr><td class="" style="border:1px solid rgb(204,204,204);padding:3px 4px"> </td><td class="" style="border:1px solid rgb(204,204,204);padding:3px 4px">copy files on node2 <br></td></tr><tr><td class="" style="border:1px solid rgb(204,204,204);padding:3px 4px">drbdadm connect r0</td><td class="" style="border:1px solid rgb(204,204,204);padding:3px 4px"> </td></tr></tbody></table></div><div><br></div><div>- at this point, we predicted that 2 primary split-brain is occurred and drbd9 detect it.</div><div><br></div><div>But split-brain is not occurred, not detected. no debug log. <br></div><div>Just retry connection log is showing between two nodes.<br></div><div><br></div><div>Question is :<br></div><div><br></div><div>1) How can I test 2 primary split-brain situation ?</div><div><br></div><div>2) Does support 2 primary split-brain in drbd9 ?</div><div><br></div><div><br></div><div><div>PS)</div><div><br></div><div><a href="http://drbd.linbit.com/users-guide-9.0/s-configure-split-brain-behavior.html#s-split-brain-notification">http://drbd.linbit.com/users-guide-9.0/s-configure-split-brain-behavior.html#s-split-brain-notification</a><br></div><div><br></div><div>drbd9's manual describe 'after-sb-2pri' option. </div></div><div><br></div><div>Thanks,</div><div><br></div><div><br></div><div>Best Regards</div><div>Sungeun Kim </div><div><br></div><div> </div><div> <br></div><div><div><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div 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