On Mon, Sep 26, 2011 at 01:49:18PM +0800, Emmanuel Noobadmin wrote: > On 9/25/11, Robin Lee Powell <[email protected]> wrote: > > > > OK, so I've got a Linux host, and a bunch of Linux VMs. > > > > This means that the host *and* all tho VMs do their own disk > > caches/buffers and do their own swap as well. > > If I'm not wrong, that's why the recommended and current default > in libvirtd is to create storage devices with no caching to remove > one layer of duplication.
How do you do that? I have my VMs using LVs created on the host as their disks, but I'm open to other methods if there are significant advantages. > > I've considered turning off swap on the VMs so all the swapping > > at least happens in *one place*; I dunno if that's best. > > Not sure it's a good idea. If the VM needs more working memory > than you allocated, I think it locks up dead if there is > insufficient swap space. At least that appears to be what happened > to one of mine. Good to know, thanks. -Robin -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
