Re: [virt-tools-list] cache write back barriers

On Fri, Jun 14, 2013 at 12:53:04PM +0200, Stefan Hajnoczi wrote: On Thu, Jun 13, 2013 at 10:47:32AM +0200, folkert wrote: Hi, In virt-manager I saw that there's the option for cache writeback for storage devices. I'm wondering: does this also make kvm to ignore write barriers

Re: cache write back barriers

On Thu, Jun 13, 2013 at 10:47:32AM +0200, folkert wrote: Hi, In virt-manager I saw that there's the option for cache writeback for storage devices. I'm wondering: does this also make kvm to ignore write barriers invoked by the virtual machine? No, that would be unsafe. When

Re: cache write back barriers

On Wed, Jun 12, 2013 at 10:03:10AM +0200, folkert wrote: In virt-manager I saw that there's the option for cache writeback for storage devices. I'm wondering: does this also make kvm to ignore write barriers invoked by the virtual machine? No, that would be unsafe. When the guest issues a

Re: cache write back barriers

Hi, In virt-manager I saw that there's the option for cache writeback for storage devices. I'm wondering: does this also make kvm to ignore write barriers invoked by the virtual machine? No, that would be unsafe. When the guest issues a flush then QEMU will ensure that data reaches

Re: cache write back barriers

@vger.kernel.org Envoyé: Mercredi 12 Juin 2013 10:03:10 Objet: cache write back barriers Hi, In virt-manager I saw that there's the option for cache writeback for storage devices. I'm wondering: does this also make kvm to ignore write barriers invoked by the virtual machine? regards

cache write back barriers

Hi, In virt-manager I saw that there's the option for cache writeback for storage devices. I'm wondering: does this also make kvm to ignore write barriers invoked by the virtual machine? regards, Folkert van Heusden -- Always wondered what the latency of your webserver is? Or how much more