Re: [CentOS] Centos 7 and qemu-kvm

2015-05-09 Thread Stephen Harris 
On Sat, May 09, 2015 at 10:11:16AM -0500, Robert Nichols wrote:
 On 05/09/2015 08:26 AM, Jerry Geis wrote:
 so I installed virt-manager - I have file images and those work.
 some times I do directly to a USB connected disk.
 
 I do not see how to do that in virt-manager ???
 
 How do I use a device like /dev/sdh as my disk???
 
 Click on Add Hardware, select Storage, then Select managed or
 other existing storage and type /dev/sdh into the box.  You can
 choose IDE disk or Virtio Disk as the device type, and the
 device will be available as /dev/sd? or /dev/vd? accordingly.

Alternatively you might be able to do this using hotswap code.  eg I have
a USB based 'scope that I want to pass through to a windows instance.
To do this I have a udev rule:

  % cat /etc/udev/rules.d/90-owon.rules
  ACTION==add, \
SUBSYSTEM==usb, \
SYSFS{idVendor}==5345, \
SYSFS{idProduct}==1234, \
RUN+=/usr/bin/virsh attach-device XP_VM1 /etc/libvirt/HotPlug/owon.xml

  ACTION==remove, \
SUBSYSTEM==usb, \
SYSFS{idVendor}==5345, \
SYSFS{idProduct}==1234, \
RUN+=/usr/bin/virsh detach-device XP_VM1 /etc/libvirt/HotPlug/owon.xml

Then the 'owon.xml' file determines the device as seen by the VM:
  % cat /etc/libvirt/HotPlug/owon.xml
  hostdev mode='subsystem' type='usb'
source
  vendor id='0x5345'/
  product id='0x1234'/
/source
  /hostdev

This passes the USB device 'raw' through to the VM.  For Windows this
means I can load the native drivers and it'll look like I've plugged
the 'scope directly into the windows machine.

Pretty sure something like this would work for hotswap disks as well.
Just make sure the Vendor/product ID numbers match the device you're
plugging in!

-- 

rgds
Stephen
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Re: [CentOS] Centos 7 and qemu-kvm

2015-05-09 Thread Robert Nichols 

On 05/09/2015 08:26 AM, Jerry Geis wrote:

Still trying to migrate to CentOS 7.

I used to use qemu-kvm on centos 6. tried to compile on
centos 7 and get error about undefined reference to timer_gettime
searching for that says basically use virt-manager

so I installed virt-manager - I have file images and those work.
some times I do directly to a USB connected disk.

I do not see how to do that in virt-manager ???

How do I use a device like /dev/sdh as my disk???


Click on Add Hardware, select Storage, then Select managed or
other existing storage and type /dev/sdh into the box.  You can
choose IDE disk or Virtio Disk as the device type, and the
device will be available as /dev/sd? or /dev/vd? accordingly.

--
Bob Nichols NOSPAM is really part of my email address.
Do NOT delete it.

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Re: [CentOS] Centos 7 and qemu-kvm

2015-05-09 Thread Dennis Jacobfeuerborn 
On 09.05.2015 15:26, Jerry Geis wrote:
 Still trying to migrate to CentOS 7.
 
 I used to use qemu-kvm on centos 6. tried to compile on
 centos 7 and get error about undefined reference to timer_gettime
 searching for that says basically use virt-manager


Why are you trying to compile it yourself and not use the version that
comes with the OS?

Regards,
  Dennis


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