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Vaknin, Rami

2016-Feb-01 21:48 UTC

[libvirt-users] Getting "unknown device type" when attaching NPIV (vHBA) to vm

Hi,

I'm trying to attach a host FC HBA to VM (NPIV).

Running ovirt 3.5 on CentOS 6.7, libvirt-0.10.2-46.el6_6.6.x86_64, I created
vHBA using nodedev-create command - see below HBA and vHBA.
I wrote a vdsm hook which appends the vHBA xml stanza to the devices xml element
but the vm start starts without the vHBA device.

Also, when trying to attach the device manually as a live device - I get:
2016-02-01 21:30:24.216+0000: 129764: debug : qemuDomainObjBeginJobInternal:847
: Starting job: modify (async=none)
2016-02-01 21:30:24.216+0000: 129764: error : virDomainDeviceDefParse:8136 : XML
error: unknown device type

Could you please help?

virsh # nodedev-dumpxml scsi_host6
<device>
  <name>scsi_host6</name>
  <parent>pci_0000_08_00_0</parent>
  <capability type='scsi_host'>
    <host>6</host>
    <capability type='fc_host'>
      <wwnn>20000024ff57d848</wwnn>
      <wwpn>21000024ff57d848</wwpn>
      <fabric_wwn>20018c604f101321</fabric_wwn>
    </capability>
    <capability type='vport_ops' />
  </capability>
</device>


virsh # nodedev-dumpxml scsi_host15
<device>
  <name>scsi_host15</name>
  <parent>scsi_host6</parent>
  <capability type='scsi_host'>
    <host>15</host>
    <capability type='fc_host'>
      <wwnn>5001a4a84992572a</wwnn>
      <wwpn>5001a4a76965d7b8</wwpn>
      <fabric_wwn>20018c604f101321</fabric_wwn>
    </capability>
  </capability>
</device>


The xml I appends:

  <devices>
...
      <device>
        <name>scsi_host16</name>
        <parent>scsi_host7</parent>
        <capability type="scsi_host">
          <host>16</host>
          <capability type="fc_host">
              <wwnn>5001a4a8cd978a73</wwnn>
              <wwpn>5001a4afa86a7378</wwpn>
              <fabric_wwn>20018c604f101411</fabric_wwn>
          </capability>
      </capability>
      </device>
      <device>
        <name>scsi_host15</name>
        <parent>scsi_host6</parent>
        <capability type="scsi_host">
          <host>15</host>
            <capability type="fc_host">
              <wwnn>5001a4a84992572a</wwnn>
              <wwpn>5001a4a76965d7b8</wwpn>
              <fabric_wwn>20018c604f101321</fabric_wwn>
            </capability>
        </capability>
      </device>

  </devices>

Thanks,
Rami.

Michal Privoznik

2016-Feb-03 13:48 UTC

head link

Re: [libvirt-users] Getting "unknown device type" when attaching NPIV (vHBA) to vm

On 01.02.2016 22:48, Vaknin, Rami wrote:> Hi,
> 
> I'm trying to attach a host FC HBA to VM (NPIV).
> 
> Running ovirt 3.5 on CentOS 6.7, libvirt-0.10.2-46.el6_6.6.x86_64, I
created vHBA using nodedev-create command - see below HBA and vHBA.
> I wrote a vdsm hook which appends the vHBA xml stanza to the devices xml
element but the vm start starts without the vHBA device.
> 
> Also, when trying to attach the device manually as a live device - I get:
> 2016-02-01 21:30:24.216+0000: 129764: debug :
qemuDomainObjBeginJobInternal:847 : Starting job: modify (async=none)
> 2016-02-01 21:30:24.216+0000: 129764: error : virDomainDeviceDefParse:8136
: XML error: unknown device type
> 
> Could you please help?
> 
> virsh # nodedev-dumpxml scsi_host6
> <device>
>   <name>scsi_host6</name>
>   <parent>pci_0000_08_00_0</parent>
>   <capability type='scsi_host'>
>     <host>6</host>
>     <capability type='fc_host'>
>       <wwnn>20000024ff57d848</wwnn>
>       <wwpn>21000024ff57d848</wwpn>
>       <fabric_wwn>20018c604f101321</fabric_wwn>
>     </capability>
>     <capability type='vport_ops' />
>   </capability>
> </device>
> 
> 
> virsh # nodedev-dumpxml scsi_host15
> <device>
>   <name>scsi_host15</name>
>   <parent>scsi_host6</parent>
>   <capability type='scsi_host'>
>     <host>15</host>
>     <capability type='fc_host'>
>       <wwnn>5001a4a84992572a</wwnn>
>       <wwpn>5001a4a76965d7b8</wwpn>
>       <fabric_wwn>20018c604f101321</fabric_wwn>
>     </capability>
>   </capability>
> </device>
> 
> 
> The xml I appends:
> 
>   <devices>
> ...
>       <device>
>         <name>scsi_host16</name>
>         <parent>scsi_host7</parent>
>         <capability type="scsi_host">
>           <host>16</host>
>           <capability type="fc_host">
>               <wwnn>5001a4a8cd978a73</wwnn>
>               <wwpn>5001a4afa86a7378</wwpn>
>               <fabric_wwn>20018c604f101411</fabric_wwn>
>           </capability>
>       </capability>
>       </device>
>       <device>
>         <name>scsi_host15</name>
>         <parent>scsi_host6</parent>
>         <capability type="scsi_host">
>           <host>15</host>
>             <capability type="fc_host">
>               <wwnn>5001a4a84992572a</wwnn>
>               <wwpn>5001a4a76965d7b8</wwpn>
>               <fabric_wwn>20018c604f101321</fabric_wwn>
>             </capability>
>         </capability>
>       </device>
> 
>   </devices>
> 
This is not how you attach a hostdev to a domain. You need to be looking
at <hostdev/>:

http://libvirt.org/formatdomain.html#elementsHostDev

Michal

Vaknin, Rami

2016-Feb-08 23:01 UTC

head link

Re: [libvirt-users] Getting "unknown device type" when attaching NPIV (vHBA) to vm

Thank you for your reply,
I'm still getting hard time to attach the hostdev, I couldn't make it
work out of the doc.

I took the address details from:

# ll /sys/bus/scsi/devices/7:*
lrwxrwxrwx 1 root root 0 Feb  8 12:58 /sys/bus/scsi/devices/7:0:0:0 ->
../../../devices/pci0000:00/0000:00:03.0/0000:08:00.1/host7/rport-7:0-0/target7:0:0/7:0:0:0
lrwxrwxrwx 1 root root 0 Feb  8 12:58 /sys/bus/scsi/devices/7:0:1:0 ->
../../../devices/pci0000:00/0000:00:03.0/0000:08:00.1/host7/rport-7:0-1/target7:0:1/7:0:1:0
lrwxrwxrwx 1 root root 0 Feb  8 12:58 /sys/bus/scsi/devices/7:0:2:0 ->
../../../devices/pci0000:00/0000:00:03.0/0000:08:00.1/host7/rport-7:0-2/target7:0:2/7:0:2:0
lrwxrwxrwx 1 root root 0 Feb  8 12:58 /sys/bus/scsi/devices/7:0:3:0 ->
../../../devices/pci0000:00/0000:00:03.0/0000:08:00.1/host7/rport-7:0-3/target7:0:3/7:0:3:0

and added them (7:0:3:0) to this base xml in various formats instead of the
default zeros:

    <hostdev mode="subsystem" " type="scsi">
      <source>
        <adapter name="scsi_host7"/>
        <address bus="0" target="0"
unit="0"/>
      </source>
      <readonly/>
      <address bus="0" controller="0"
target="0" type="drive" unit="0"/>
    </hostdev>

Libvirt keeps saying:
" error : virDomainHostdevDefParseXMLSubsys:3091 : XML error: unknown host
device source address type 'scsi'"

I still can't figure it out, I still have open questions I can't
understand from the docs:

Am I using the right subsystem type? Or maybe I should attach the host HBA PCI
(QLogic) directly?
Should I use the host scsi_host or should it be the vHBA created uding libvirt?
How exactly I extract the host address and derives the destination address?



-----Original Message-----
From: Michal Privoznik [mailto:mprivozn@redhat.com] 
Sent: Wednesday, February 03, 2016 3:49 PM
To: Vaknin, Rami; libvirt-users@redhat.com
Subject: Re: [libvirt-users] Getting "unknown device type" when
attaching NPIV (vHBA) to vm

On 01.02.2016 22:48, Vaknin, Rami wrote:> Hi,
> 
> I'm trying to attach a host FC HBA to VM (NPIV).
> 
> Running ovirt 3.5 on CentOS 6.7, libvirt-0.10.2-46.el6_6.6.x86_64, I
created vHBA using nodedev-create command - see below HBA and vHBA.
> I wrote a vdsm hook which appends the vHBA xml stanza to the devices xml
element but the vm start starts without the vHBA device.
> 
> Also, when trying to attach the device manually as a live device - I get:
> 2016-02-01 21:30:24.216+0000: 129764: debug : 
> qemuDomainObjBeginJobInternal:847 : Starting job: modify (async=none)
> 2016-02-01 21:30:24.216+0000: 129764: error : 
> virDomainDeviceDefParse:8136 : XML error: unknown device type
> 
> Could you please help?
> 
> virsh # nodedev-dumpxml scsi_host6
> <device>
>   <name>scsi_host6</name>
>   <parent>pci_0000_08_00_0</parent>
>   <capability type='scsi_host'>
>     <host>6</host>
>     <capability type='fc_host'>
>       <wwnn>20000024ff57d848</wwnn>
>       <wwpn>21000024ff57d848</wwpn>
>       <fabric_wwn>20018c604f101321</fabric_wwn>
>     </capability>
>     <capability type='vport_ops' />
>   </capability>
> </device>
> 
> 
> virsh # nodedev-dumpxml scsi_host15
> <device>
>   <name>scsi_host15</name>
>   <parent>scsi_host6</parent>
>   <capability type='scsi_host'>
>     <host>15</host>
>     <capability type='fc_host'>
>       <wwnn>5001a4a84992572a</wwnn>
>       <wwpn>5001a4a76965d7b8</wwpn>
>       <fabric_wwn>20018c604f101321</fabric_wwn>
>     </capability>
>   </capability>
> </device>
> 
> 
> The xml I appends:
> 
>   <devices>
> ...
>       <device>
>         <name>scsi_host16</name>
>         <parent>scsi_host7</parent>
>         <capability type="scsi_host">
>           <host>16</host>
>           <capability type="fc_host">
>               <wwnn>5001a4a8cd978a73</wwnn>
>               <wwpn>5001a4afa86a7378</wwpn>
>               <fabric_wwn>20018c604f101411</fabric_wwn>
>           </capability>
>       </capability>
>       </device>
>       <device>
>         <name>scsi_host15</name>
>         <parent>scsi_host6</parent>
>         <capability type="scsi_host">
>           <host>15</host>
>             <capability type="fc_host">
>               <wwnn>5001a4a84992572a</wwnn>
>               <wwpn>5001a4a76965d7b8</wwpn>
>               <fabric_wwn>20018c604f101321</fabric_wwn>
>             </capability>
>         </capability>
>       </device>
> 
>   </devices>
> 
This is not how you attach a hostdev to a domain. You need to be looking at
<hostdev/>:

http://libvirt.org/formatdomain.html#elementsHostDev

Michal

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