[xen-tools-discuss] Re: Using AoE storage

[Mike Bailey]

In addition, I found I needed to run this on all hosts after creating a new
lv on one.
lvchange -a y xendisks

Live migration without locking works fine *but* I don't trust that someone
won't fire up
the same domU on a second host. That could corrupt the filesystem.

- Mike


> >>   I assume those commands have to specified on each host that needs to
> >> use the shared storage.
> >
> > The pvcreate and vgcreate only need to be run on one host. The other
> hosts
> > pick up on the settings because LVM details are written to the disks.
>
>    Very good.  Thanks for explaining that.
>
> >>  Does this require LVM to use any kind of locking?
> >
> > This doesn't give me locking. I'm not comfortable with that.
> >
> > CLVM does give you clustered locking but I haven't got that working.
>
>    Okay.  If I understand correctly, live migration basically passes the
> contents of memory to the new machine and then hands over control of the
> disk anyway - which means locking wouldn't technically be required.  Is
> that right?
>
>   Thanks for your help in this, Mike!
>
> Yours,
>    Tom
>
>
>