<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=iso-8859-1"> <META content="MSHTML 6.00.2900.2963" name=GENERATOR></HEAD> <BODY> <DIV dir=ltr align=left><SPAN class=489314809-31082006><FONT face=Arial color=#0000ff size=2>True, you don't "have to" but as of RHEL4, update 4, you have the option. I believe the only</FONT></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=489314809-31082006><FONT face=Arial color=#0000ff size=2>available documentation is "man qdisk" once it's installed, unless redhat has updated the</FONT></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=489314809-31082006><FONT face=Arial color=#0000ff size=2>online docs. I believe the docs you might be looking at are for RHEL 3 and the older cluster</FONT></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=489314809-31082006><FONT face=Arial color=#0000ff size=2>services software.</FONT></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=489314809-31082006><FONT face=Arial color=#0000ff size=2></FONT></SPAN> </DIV> <DIV dir=ltr align=left><SPAN class=489314809-31082006><FONT face=Arial color=#0000ff size=2></FONT></SPAN> </DIV> <DIV dir=ltr align=left><SPAN class=489314809-31082006><FONT face=Arial color=#0000ff size=2>Cheers</FONT></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=489314809-31082006><FONT face=Arial color=#0000ff size=2></FONT></SPAN> </DIV> <DIV dir=ltr align=left><SPAN class=489314809-31082006><FONT face=Arial color=#0000ff size=2></FONT></SPAN> </DIV> <DIV dir=ltr align=left><SPAN class=489314809-31082006><FONT face=Arial color=#0000ff size=2>Corey</FONT></SPAN></DIV><BR> <DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left> <HR tabIndex=-1> <FONT face=Tahoma size=2><B>From:</B> linux-cluster-bounces@redhat.com [mailto:linux-cluster-bounces@redhat.com] <B>On Behalf Of </B>Peter Gustafsson1<BR><B>Sent:</B> Thursday, August 31, 2006 3:40 AM<BR><B>To:</B> linux clustering<BR><B>Subject:</B> Re: [Linux-cluster] Shared Storage and Quorum device<BR></FONT><BR></DIV> <DIV></DIV><BR><FONT face=sans-serif size=2>Hi,</FONT> <BR><BR><FONT face=sans-serif size=2>In Red Hat Cluster Suite 4 you don't need to have shared storage.<BR></FONT><FONT color=#808080 size=3><B><I><BR>Hälsningar/Regards Peter</I></B></FONT><FONT size=3><BR>___________________________________________________________________________________ </FONT><FONT face=Arial color=#808080 size=2><B><BR>Peter Gustafsson</B></FONT><FONT face=Arial color=#808080 size=1><B><BR><BR>UNIX/LINUX systems programmer</B><BR><BR>SDO/SSO/Server Management/Operating Systems/Unix<BR></FONT><FONT face="Monotype Sorts" color=#808080 size=4><BR>. </FONT><FONT size=3> </FONT><FONT face=Arial color=#808080 size=1>Nordic Processor, Oddegatan 5, SE-164 92 Stockholm</FONT><FONT face="Monotype Sorts" color=#808080 size=4><BR>% </FONT><FONT face=Arial color=#808080 size=1>Phone:+46 (0)8 793 39 23 Mobile:+46 (0)70 793 39 23</FONT><FONT face="Monotype Sorts" color=#808080 size=4><BR>) </FONT><FONT face=Arial color=#808080 size=1>mailto:peter.gustafsson1@se.ibm.com</FONT><FONT size=3> </FONT><FONT face=Arial color=#808080 size=1><B><BR>Red Hat Enterprise Linux Certified Engineer</B></FONT> <BR><BR><BR> <TABLE width="100%"> <TBODY> <TR vAlign=top> <TD width="40%"><FONT face=sans-serif size=1><B>Mikhail A Zelikov <mzelikov@cs.uml.edu></B> </FONT><BR><FONT face=sans-serif size=1>Sent by: linux-cluster-bounces@redhat.com</FONT> <P><FONT face=sans-serif size=1>2006-08-24 16:36</FONT> <TABLE border=1> <TBODY> <TR vAlign=top> <TD bgColor=white> <DIV align=center><FONT face=sans-serif size=1>Please respond to<BR>linux clustering</FONT></DIV></TR></TBODY></TABLE><BR></P> <TD width="59%"> <TABLE width="100%"> <TBODY> <TR> <TD> <DIV align=right><FONT face=sans-serif size=1>To</FONT></DIV> <TD vAlign=top><FONT face=sans-serif size=1>linux-cluster@redhat.com</FONT> <TR> <TD> <DIV align=right><FONT face=sans-serif size=1>cc</FONT></DIV> <TD vAlign=top> <TR> <TD> <DIV align=right><FONT face=sans-serif size=1>Subject</FONT></DIV> <TD vAlign=top><FONT face=sans-serif size=1>[Linux-cluster] Shared Storage and Quorum device</FONT></TR></TBODY></TABLE><BR> <TABLE> <TBODY> <TR vAlign=top> <TD> <TD></TR></TBODY></TABLE><BR></TR></TBODY></TABLE><BR><BR><BR><FONT size=2><TT>I was wondering if anybody has information on this. I have 2 node cluster<BR>and some shared storage between two nodes.<BR>The manual contains some information on the shared storage setup:<BR>http://www.redhat.com/docs/manuals/csgfs/browse/rh-cs-en/s1-hardware-cluster.html#S2-HARDWARE-STORAGESETUP<BR>Section 2.5.3.1 at<BR>http://www.redhat.com/docs/manuals/csgfs/browse/rh-cs-en/s1-hardware-connect.html.<BR>However I could not find a way to tell the cluster to use my raw devices<BR>and also test that any of these devices are being used. I also use my<BR>cluster w/o any shared devices and it seems to work.<BR>But in this case a 2-node cluster requires a quorum devices (usually<BR>shared storage) - I can see that when one node is down I still have a<BR>quorum w/o using any shared storage.<BR><BR>So my questions are:<BR>1. Do I have to have a shared storage?<BR>1.a If yes then how do I configure and test it?<BR>1.b If no then how is the quorum is achieved in 2-node cluster when 1 node<BR>is down?<BR><BR>Thanks,<BR>Mike<BR><BR>--<BR>Linux-cluster mailing list<BR>Linux-cluster@redhat.com<BR>https://www.redhat.com/mailman/listinfo/linux-cluster<BR></TT></FONT><BR></BODY></HTML>