Hi Simon, i have installed ceph package into the compute node, but it looks qcow2 format is unable to create.. it show error with : Could not write qcow2 header: Invalid argument
--- qemu-img create -f qcow2 rbd:storage1/CentOS7-3 10G Formatting 'rbd:storage1/CentOS7-3', fmt=qcow2 size=10737418240 encryption=off cluster_size=65536 lazy_refcounts=off refcount_bits=16 qemu-img: rbd:storage1/CentOS7-3: Could not write qcow2 header: Invalid argument --- any ideas? thank you! On Thu, Jan 28, 2016 at 1:01 AM, Simon Ironside <[email protected]> wrote: > On 27/01/16 16:51, Bill WONG wrote: > > i have ceph cluster and KVM in different machine.... the qemu-kvm >> (CentOS7) is dedicated compute node installed with qemu-kvm + libvirtd >> only, there should be no /etc/ceph/ceph.conf >> > > Likewise, my compute nodes are separate machines from the OSDs/monitors > but the compute nodes still have the ceph package installed and > /etc/ceph/ceph.conf present. They just aren't running any ceph daemons. > > I give the compute nodes their own ceph key with write access to the pool > for VM storage and read access to the monitors. I can then use ceph status, > rbd create, qemu-img etc directly on the compute nodes. > > Cheers, > Simon. >
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