Re: [libvirt] [PATCH 1/2] qemu: add vhost-scsi-pci definitions
Il 24/07/2014 05:24, Nicholas A. Bellinger ha scritto:
From: Mike Perez <thingee(a)gmail.com>
This patch adds the necessary definitions to support vhost-scsi-pci and
VIR_DOMAIN_CONTROLLER_MODEL_SCSI_VHOST_SCSI in QEMU >= v1.5.x code.
This includes:
- Add QEMU_CAPS_VHOST_SCSI
- Add virDomainControllerDef->wwpn pointer for the vhost-scsi wwpn.
- Setting the new model type in qemuSetSCSIControllerModel()
- Invoking virDomainPCIAddressReserveAddr() for vhost-scsi-pci in
qemuAssignDevicePCISlots()
- Add the 'wwpn=' device parameter in qemuBuildControllerDevStr()
- Add vhost-scsi-pci to >= v1.5.x qemucapabilitiesdata
- Add xml2argv and xml2xml tests for cmd_per_lun + max_sectors +
num_queues + wwpn.
Signed-off-by: Mike Perez <thingee(a)gmail.com>
Signed-off-by: Nicholas Bellinger <nab(a)linux-iscsi.org>
Configuration still has to go through configfs; I'm not sure how using <disk>
and vhost-scsi together makes sense:
+ <disk type='block' device='disk'>
+ <source dev='/dev/HostVG/QEMUGuest1'/>
+ <target dev='sdb' bus='scsi'/>
+ <address type='drive' controller='0' bus='0'
target='0' unit='0'/>
+ </disk>
+ <controller type='usb' index='0'/>
+ <controller type='scsi' index='0' model='vhost-scsi'>
+ <driver wwpn='naa.60014050a13df4f2'/>
+ </controller>
...
+-device vhost-scsi-pci,id=scsi0,wwpn=naa.60014050a13df4f2 \
+-usb \
+-drive file=/dev/HostVG/QEMUGuest1,if=none,id=drive-scsi0-0-0-0 \
+-device scsi-disk,bus=scsi0.0,channel=0,scsi-id=0,lun=0,\
+drive=drive-scsi0-0-0-0,id=scsi0-0-0-0 \
and I'm not sure even how it can work since vhost-scsi-pci doesn't expose
a QEMU SCSI bus.
Paolo