<br><br><div class="gmail_quote">On Mon, Feb 9, 2009 at 2:56 PM, Dejan Muhamedagic <span dir="ltr"><<a href="mailto:dejanmm@fastmail.fm">dejanmm@fastmail.fm</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div><div></div><div class="Wj3C7c">On Mon, Feb 09, 2009 at 02:16:42PM +0530, Glory Smith wrote:<br>
> On Mon, Feb 9, 2009 at 2:06 PM, Dejan Muhamedagic <<a href="mailto:dejanmm@fastmail.fm">dejanmm@fastmail.fm</a>>wrote:<br>
><br>
> > Hi,<br>
> ><br>
> > On Mon, Feb 09, 2009 at 01:26:56PM +0530, Glory Smith wrote:<br>
> > > Hi All,<br>
> > > Anybody worked on stonith external/sbd?? if yes please reply to my<br>
> > following<br>
> > > mail.<br>
> > ><br>
> > > On Fri, Feb 6, 2009 at 2:27 PM, Glory Smith <<a href="mailto:xx2glory@gmail.com">xx2glory@gmail.com</a>> wrote:<br>
> > ><br>
> > > > Hi All,<br>
> > > > I am New to this list. i have few questions related to stonith<br>
> > external<br>
> > > > sbd plugin .<br>
> > > ><br>
> > > > i saw that document says that read/write to thd sbd device is single<br>
> > point<br>
> > > > of failure . if we configure multipath then this should not be SPOF<br>
> > anymore<br>
> > > > . Right??<br>
> ><br>
> > Right. Provided your local rat community doesn't consider the<br>
> > cables edible.<br>
> ><br>
> > > > it says that other nodes can write fence request to the errant node's<br>
> > > > mailbox and the errant node gets fenced.<br>
> > > > can any one explain when it will happen .<br>
> ><br>
> > Whenever the CRM decides a node should be fenced. It has nothing<br>
> > to do with sbd.<br>
> ><br>
> > > > According to my understanding so far, as long as the node is having<br>
> > access<br>
> > > > to sbd device it will not get fenced and once it looses access to the<br>
> > sbd<br>
> > > > device it will reset itself . so when other nodes will get chance to<br>
> > fence<br>
> > > > a node by writing fence request?<br>
> ><br>
> > Not true. A node may also get a "poison pill" from another node,<br>
> > just as you mentioned yourself in the previous paragraph.<br>
><br>
><br>
> As you said if CRM decides a node should be fenced it will be fenced and it<br>
> has nothing to do with sbd.<br>
<br>
</div></div>Right. The decision itself has nothing to do with sbd. sbd is<br>
just an executioner.<br>
<div class="Ih2E3d"><br>
> so in this case cluster must need an another<br>
> stonith to provide fencing of errant node. is my understanding is correct.<br>
<br>
</div>No.<br>
<div class="Ih2E3d"><br>
> can you explain a bit more , how CRM decide that a node should be fence ? is<br>
> it when node become unreachable.??<br>
<br>
</div>Yes. Also if a resource can't be stopped on that node.</blockquote><div><br><br>sorry to interrupt in between. just one question from my side. if no-quorum-policy is set to freeze then resource is not supposed to stop .in that case node will not be fenced right?? <br>
</div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br>
<br>
Thanks,<br>
<font color="#888888"><br>
Dejan<br>
</font><div><div></div><div class="Wj3C7c"><br>
> Thanks<br>
><br>
> ><br>
> ><br>
> > Thanks,<br>
> ><br>
> > Dejan<br>
> ><br>
> ><br>
> > > ><br>
> > > > Thanks<br>
> > > ><br>
> ><br>
> > > _______________________________________________<br>
> > > Pacemaker mailing list<br>
> > > <a href="mailto:Pacemaker@oss.clusterlabs.org">Pacemaker@oss.clusterlabs.org</a><br>
> > > <a href="http://oss.clusterlabs.org/mailman/listinfo/pacemaker" target="_blank">http://oss.clusterlabs.org/mailman/listinfo/pacemaker</a><br>
> ><br>
> ><br>
> > _______________________________________________<br>
> > Pacemaker mailing list<br>
> > <a href="mailto:Pacemaker@oss.clusterlabs.org">Pacemaker@oss.clusterlabs.org</a><br>
> > <a href="http://oss.clusterlabs.org/mailman/listinfo/pacemaker" target="_blank">http://oss.clusterlabs.org/mailman/listinfo/pacemaker</a><br>
> ><br>
<br>
> _______________________________________________<br>
> Pacemaker mailing list<br>
> <a href="mailto:Pacemaker@oss.clusterlabs.org">Pacemaker@oss.clusterlabs.org</a><br>
> <a href="http://oss.clusterlabs.org/mailman/listinfo/pacemaker" target="_blank">http://oss.clusterlabs.org/mailman/listinfo/pacemaker</a><br>
<br>
<br>
_______________________________________________<br>
Pacemaker mailing list<br>
<a href="mailto:Pacemaker@oss.clusterlabs.org">Pacemaker@oss.clusterlabs.org</a><br>
<a href="http://oss.clusterlabs.org/mailman/listinfo/pacemaker" target="_blank">http://oss.clusterlabs.org/mailman/listinfo/pacemaker</a><br>
</div></div></blockquote></div><br>