Hi,
With ceph rbd you should use raw image format. As i know qcow2 is not supported.
On Thu, Jan 28, 2016 at 6:21 AM, Bill WONG <wongahshuen@xxxxxxxxx> wrote:
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 10GFormatting 'rbd:storage1/CentOS7-3', fmt=qcow2 size=10737418240 encryption=off cluster_size=65536 lazy_refcounts=off refcount_bits=16qemu-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 <sironside@xxxxxxxxxxxxx> 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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Marius Vaitiekūnas
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