Hi,
We wanted to check if it’s possible to specify a disk’s target as nvme (so that the disk
shows up as a nvme disk to the guest VM).
Per libvirt documentation it looks like (since Libvirt 6.0.0) we can specify the disk type
as nvme and disks source as a nvme. But the documentation does not say anything about
being specify the disk’s target as nvme. Is it possible to present the disk to the guest
as a nvme disk, if so how?
Example from Libvirt documentation (
https://libvirt.org/formatdomain.html)
-----
<disk type='nvme' device='disk'>
<driver name='qemu' type='raw'/>
<source type='pci' managed='yes' namespace='1'>
<address domain='0x0000' bus='0x01' slot='0x00'
function='0x0'/>
</source>
<target dev='vde' bus='virtio'/>
</disk>
-----
But we want to do something similar to the following: two vNVMe controllers where the
first one has one namespace and the second one has two namespaces
-----
# first NVMe controller, one namespace
<disk type='network' device='disk'>
<driver name='qemu' type='raw'/>
<source protocol='iscsi'
name='iqn.2013-07.com.example:iscsi-nopool/123'>
<host name='example.com' port='3260'/>
<auth username='myuser'>
<secret type='iscsi' usage='libvirtiscsi'/>
</auth>
</source>
<target dev='nvme0' bus='nvme'/>
</disk>
# second NVMe controller, first namespace
<disk type='network' device='disk'>
<driver name='qemu' type='raw'/>
<source protocol='iscsi'
name='iqn.2013-07.com.example:iscsi-nopool/456'>
<host name='example.com' port='3260'/>
<auth username='myuser'>
<secret type='iscsi' usage='libvirtiscsi'/>
</auth>
</source>
<target dev='nvme1' namespace='1' bus='nvme'/>
</disk>
# second NVMe controller, first namespace
<disk type='network' device='disk'>
<driver name='qemu' type='raw'/>
<source protocol='iscsi'
name='iqn.2013-07.com.example:iscsi-nopool/789'>
<host name='example.com' port='3260'/>
<auth username='myuser'>
<secret type='iscsi' usage='libvirtiscsi'/>
</auth>
</source>
<target dev='nvme1' namespace='2' bus='nvme'/>
</disk>
-----
If in case this is not yet supported, would it be merged if we were to implement it?
Thanks,
Suraj