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
>
>
>
Received on Tue Nov 11 2008 - 02:27:27 GMT