<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On Feb 16, 2009, at 11:53 AM, Glory Smith wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><br><br> <div> <blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">having an unreliable stonith mechanism is worse than not having one at all.<br><br>what if your resource fencing has a bug? its the same problem.<br> <br>reliable fencing is a fundamental requirement of the cluster.</blockquote> <div> </div> <div>i understand . but If i can do both (node as well as resource fencing) then there is very very rare chance that both will fail at same time.</div></div></blockquote><div><br></div><div>You can have multiple stonith devices. If one fails, we just try the next.</div><br><blockquote type="cite"><div><div> </div> <div> </div> <div>i will again say it would be really good if something can be done to implement resource fencing in openais-pacemaker. dont you agree with this. </div></div></blockquote><div><br></div><div>I get the feeling that by "resource fencing", you just mean scsi reservations which are already possible in the current framework.</div><div><br></div><div><br></div><blockquote type="cite"><div><blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">2) no, it cant.<br>it wont have quorum and therefor isn't allowed to start cluster resources</blockquote> <div> </div> <div>if i set no-quourm to stop (Which is default) then i feel following things will happen</div> <div> </div> <div>1) resouces will be stopped at all nodes who belong to no-quourm partition and fail over to a nodes which have quorum.</div> <div> </div> <div>2) All nodes of no-quorum partion will be stonithed by nodes having quorum.</div> <div> </div> <div>am i right?</div></div></blockquote><div><br></div><div>correct. although 2) usually happens a lot faster than 1).</div><br><blockquote type="cite"><div><br> <blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid"><span class="q"> <blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">if openais -pacemaker provide something for resouce fencing we would have completely ruled out above possiblities Please share your view.<br> <br><br></blockquote><br></span> <div><span class="e" id="q_11f7ea76aa4fbd87_5">_______________________________________________<br>Pacemaker mailing list<br><a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:Pacemaker@oss.clusterlabs.org" target="_blank">Pacemaker@oss.clusterlabs.org</a><br> <a onclick="return top.js.OpenExtLink(window,event,this)" href="http://oss.clusterlabs.org/mailman/listinfo/pacemaker" target="_blank">http://oss.clusterlabs.org/mailman/listinfo/pacemaker</a><br></span></div></blockquote> </div><br> _______________________________________________<br>Pacemaker mailing list<br><a href="mailto:Pacemaker@oss.clusterlabs.org">Pacemaker@oss.clusterlabs.org</a><br>http://oss.clusterlabs.org/mailman/listinfo/pacemaker<br></blockquote></div><br></body></html>