xen proposal
Kostas Georgiou
k.georgiou at imperial.ac.uk
Fri Apr 18 20:52:38 UTC 2008
On Fri, Apr 18, 2008 at 03:33:22PM -0500, Mike McGrath wrote:
> The only reason we haven't done this already is the inability to detect if
> the box is already up somewhere (which is something we need already)
> Consider this scenario:
>
> app1 running on xen1 (which is having high load from koji1 also on xen1)
>
> People complain about the wiki.
>
> We move app1 to a more free box, xen7.
>
> high load causes CRASH
>
> xen1 reboots. Attempts to bring app1 up (already up on xen7)
>
> Two machines try to write to the same disk - DOOM.
What about using gfs (or maybe just nfs from the netapp) to keep the
contents of /etc/xen/auto "synced" between hosts? Having /etc/xen/auto
as a link to [sharedarea]/auto-xenXX and making sure that the entries
there are unique will be a good start for a solution I think.
Kostas
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