I think the better question is this. How can I make my 2 physical servers that are identical into the best clustered solution sharing the storage between the 2. <br>Server 1 is the main server and server 2 is the backup server.<br>
This is my set up now. <br>Each is running Centos 5.3<br>I have virtualization set up on them so this is the setup:<br><br>Dom0<br>These are the quests.<br><ol><li>Samba 1 with 3 terabyte block device <br></li><li>Samba 2 with 2 terabyte block device <br>
</li><li>Samba 3 with 2 terabyte block device<br></li><li>Lotus Domino 3 terabyte block device.</li></ol>They all use xfs.<br>I want to keep the guests the same on each server.<br>I will start with the backup server. I will go on each vm and delete this FS and block device.<br>
I then want make that whole 10 terabyte raid into one gfs and then re-attach it back to each guest. <br>Is that possible or do I have to start all over again? If it can be done I then will sync the date from the mainserver to this backup server and then switch them and do the same to the mainserver. <br>
<br>I have one more question which is another whole thread. <br>I am using rsync to sync the 2 physical boxes now. Is there a better way to do this?<br><br><br><div class="gmail_quote">On Tue, Feb 9, 2010 at 10:23 AM, Ben M. <span dir="ltr"><<a href="mailto:centos@rivint.com">centos@rivint.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div class="im">Rich wrote:<br>
> I want to make the 10 terabytes raid an xfs filesystem and then share<br>
> the drive with all 4 of the vm's. 3 of the servers will be samba<br>
> servers and one will be my Lotus notes server. I want to make the<br>
> filesystem /data and then each one of the servers will use specific sub<br>
> directories. I have it set up as block devices now but I want the<br>
> flexibility of having the whole 10 terabytes available to all 4 servers.<br>
><br>
> On Tue, Feb 9, 2010 at 1:28 AM, Christopher G. Stach II <<a href="mailto:cgs@ldsys.net">cgs@ldsys.net</a><br>
</div>> <mailto:<a href="mailto:cgs@ldsys.net">cgs@ldsys.net</a>>> wrote:<br>
><br>
> ----- "Adam Adamou" <<a href="mailto:adam0x54@gmail.com">adam0x54@gmail.com</a> <mailto:<a href="mailto:adam0x54@gmail.com">adam0x54@gmail.com</a>>><br>
<div class="im">> wrote:<br>
><br>
> > either nfs or ocfs2. nfs is the easiest route. ocfs2 will give you a<br>
> > clustered filesystem.<br>
><br>
> Except NFS doesn't follow normal filesystem semantics and you can<br>
> end up with corrupt data without knowing it, and it, along with<br>
> CIFS, will give you a free shitload of network overhead to go along<br>
> with your possibly corrupt data. OCFS2 or GFS are the only practical<br>
> choices if you want it to behave like a typical filesystem and not<br>
> have to worry about catering to it or rewriting software and/or<br>
> reeducating developers, and OCFS2 is extremely easy to set up.<br>
><br>
> The original question didn't specify much about the requirements,<br>
> though. A single shared filesystem? Read-write or read-only? No<br>
> filesystem at all? Without that information, I would at first<br>
> recommend not sharing. It can be a lot of trouble, it's usually not<br>
> required, and it severely complicates life when things fail.<br>
><br>
> Well, there is always XenFS... :/<br>
><br>
> --<br>
<br>
</div>Though dated, this article is interesting regarding this thread. The<br>
article needs to be updated (Last Modified = June 2006), and rewritten<br>
for CentOS Xen virtualization, but it looks sound upon my first reading:<br>
<br>
<<a href="http://xenamo.sourceforge.net/" target="_blank">http://xenamo.sourceforge.net/</a>><br>
<div><div></div><div class="h5"><br>
<br>
_______________________________________________<br>
CentOS-virt mailing list<br>
<a href="mailto:CentOS-virt@centos.org">CentOS-virt@centos.org</a><br>
<a href="http://lists.centos.org/mailman/listinfo/centos-virt" target="_blank">http://lists.centos.org/mailman/listinfo/centos-virt</a><br>
</div></div></blockquote></div><br>