Yes, the only thing which brings the wirte I/O almost on my Host Level is by enabling viodiskcache = writeback. As far as i can tell this is caching enabled for the guest and the host which is critical if sudden power loss happens. Can i turn this is on if i have a BBU in my Host System?
On Sun, Feb 9, 2014 at 6:25 PM, Vijay Bellur <[email protected]> wrote: > On 02/09/2014 09:11 PM, ml ml wrote: > >> I am on Cent OS 6.5 and i am using: >> >> [root@node1 ~]# rpm -qa | grep gluster >> glusterfs-rdma-3.4.2-1.el6.x86_64 >> glusterfs-server-3.4.2-1.el6.x86_64 >> glusterfs-fuse-3.4.2-1.el6.x86_64 >> glusterfs-libs-3.4.2-1.el6.x86_64 >> glusterfs-3.4.2-1.el6.x86_64 >> glusterfs-api-3.4.2-1.el6.x86_64 >> glusterfs-cli-3.4.2-1.el6.x86_64 >> vdsm-gluster-4.13.3-3.el6.noarch >> > > Have you turned on "Optimize for Virt Store" for the gluster volume? > > -Vijay > >
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