<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"> </head> <body text="#000000" bgcolor="#ffffff"> I'm sure others can provide a much more in depth answer but in short... Not all "file systems" are cluster aware.<br> <br> Something like GFS can be active on all nodes at the same time; because it uses a lock manager that makes every node in your cluster "chat" with each other to determine who is writing to the filesystem to keep it from corrupting itself.<br> <br> In my case, I need xfs (or maybe ext3) for a few reasons; hence I'll be doing "active - passive" on a 2 node cluster - and therefore passing the filesystem and luns back and forth - between "primary vs. standby".<br> <br> -Michael<br> <br> Jonathan Horne wrote, On 3/15/2010 9:04 PM: <blockquote cite="mid:149084.53775.qm@web45302.mail.sp1.yahoo.com" type="cite"> <style type="text/css"></style> <div style="font-family: arial,helvetica,sans-serif; font-size: 10pt; color: rgb(0, 0, 0);">ok, i can understand the usefulness of luci for creating clustered services. yes, create the IP, add the init script of the daemon you want to pass back and forth. i can build all that and it works fine.<br> <br> what im not understanding is, whats the point of creating the file system as a service? what, is this also going to be passed back and forth between hosts? i would think the file system should be available 100% of the time to both hosts.<br> <br> perhaps someone can recommend me a good article that will help me setup *AND* comprehend the "whys" of why this is necessary to be setup in luci? and i would also recommend any dissertation from anyone else as well, to help me understand this better.<br> <br> thanks,<br> <div><br> </div> </div> <br> <pre wrap=""> <fieldset class="mimeAttachmentHeader"></fieldset> -- Linux-cluster mailing list <a class="moz-txt-link-abbreviated" href="mailto:Linux-cluster@redhat.com">Linux-cluster@redhat.com</a> <a class="moz-txt-link-freetext" href="https://www.redhat.com/mailman/listinfo/linux-cluster">https://www.redhat.com/mailman/listinfo/linux-cluster</a></pre> </blockquote> <br> <br> </body> </html>