Re: [Xen-users] cluster filesystems

[Brock Edward Palen <brockp@xxxxxxxxx>]

Ralf Schenk wrote:
> Peter Fokkinga schrieb:
>   
> > If you have different physical servers that need a shared
> > storage (for performance or high availability reasons) then,
> > as far as I know, you need to spend big money on a SAN, or
> > iSCSI, etc.
> >     
> Hello !
>
> "Big money" is very relative. If you already habe Gigabit Ethernet
> Infrastructure for your servers at least you can use the software
> implementation of the Enterprise ISCSI Target (IET)
> iscsitarget.sourceforge.net.
>   
The best idea i have come up (though i wont be able to try it for some 
time) with with minimal patching is this:
Use ocfs2 as file system,
Use nbd+md to make a "networked raid"
use iSCSI to export this network raid to Xen parent hosts, 

My question to those of you with better know how:
   Will this allow live migration (assume yes as now because of the 
"real" block device shown by ocfs2)
   Will domU's living on the file system survive a file system node 
failure? (this is the who point of this thread)
Brock
> If you don't want to configure and setup the software yourself you could
> buy http://www.open-e.com/. This is a Flash-DOM that fits in the IDE
> Port of a fileserver and turns this fileserver into an managable ISCSI
> Target (it is Linux based). (Ranges from about 300$ to 800$)
>
>   

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