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</o:shapelayout></xml><![endif]--></head><body lang=EN-AU link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I guess you can set up DRBD as active-active so you can access the DRBD storage on both nodes and setup MySQL as active-passive. I’m not sure about the coherency of the FS on the back up node though even if you will mount it as RO but you will be safe if you are using a clustered FS but in such a case it will add more complexity to the setup and generally speaking two nodes active-active cluster is fragile and might end up with many brain-split situations. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Cheers,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoListParagraph style='margin-left:22.5pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-size:11.0pt;font-family:Wingdings;color:#1F497D'><span style='mso-list:Ignore'>n<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Abraham<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> drbd-user-bounces@lists.linbit.com [mailto:drbd-user-bounces@lists.linbit.com] <b>On Behalf Of </b>Mateusz Kalisiak<br><b>Sent:</b> Wednesday, 30 March 2011 8:37 AM<br><b>To:</b> drbd-user@lists.linbit.com<br><b>Subject:</b> [DRBD-user] Backing up MySQL data in DRBD Cluster<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>Hello Everyone,<br><br>I'd like to setup the standard MySQL-DRBD-HA architecture:<br>- PRIMARY server with MySQL and mounted /dev/drbd0,<br>- SECONDARY just being standalone and waiting for failover.<br>Additionally, during normal cluster activity (primary server is fine and active) I'd like to perform backup of MySQL data, but using only SECONDARY node.<br>Did anyone tried such thing? <br>Maybe such feature would be available somehow in ACTIVE-ACTIVE architecture (although according to MySQL docs it's not <a href="http://dev.mysql.com/doc/refman/5.0/en/drbd-architecture.html#qandaitem-B-14-3-1-1">http://dev.mysql.com/doc/refman/5.0/en/drbd-architecture.html#qandaitem-B-14-3-1-1</a> )<br><br>Regards,<br>Mateusz<o:p></o:p></p></div></body></html>