Re: [Xen-API] SR-IOV support in XCP 1

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Mon, Aug 29, 2011 at 10:31:14PM +0530, R J wrote:
>    Hello Pasi,
> 
>    Thank you for your email.
>    Let me explain the setup more clear, sorry for the confusion.
> 
>    I have 2 Dell R410 and a shared FC storage,
>    I have created a Centos 64 bit VM on this pool and attached a disk.
>    The disk comes from shared cloud storage and it was created while
>    installing the VM.
> 
>    I'm sorry but I did not understand this part
>    "passing thru HBA VF to the VM ? and using the VF driver in the VM ?"
> 

VF = Virtual Function of SR-IOV device.
Ok so it sounds like you're not using SR-IOV at all, but just regular storage. 

So first benchmark the storage from baremetal Linux, with no virtualization,
and the compare to the results you get from the XCP VM.

-- Pasi

>    Thanks for help.
> 
>    Regards,
>    Rushi
> 
>    On Mon, Aug 29, 2011 at 8:57 PM, Pasi Kärkkäinen <[1]pasik@xxxxxx> wrote:
> 
>      On Thu, Aug 25, 2011 at 10:37:15PM +0530, R J wrote:
>      >    Hello List,
>      >
> 
>      Hello,
>      >    I'm evaluating current stable release of XCP1 on Fiber Channel
>      Storage of
>      >    Hitachi with 4Gb cache AMS2100.
>      >    I'm using boniee++ to evaluate the 2TB lun from a Centos VM 2 vCPU
>      / 4GB
>      >    RAM ( file size 8GB ). The VM runs on a Dell R410.
>      >
> 
>      So the subject mentions SR-IOV so does that mean you're
>      passing thru HBA VF to the VM ? and using the VF driver in the VM ?
> 
>      Also: How does the storage perform without any virtualization,
>      ie. from Linux on baremetal.
> 
>      -- Pasi
>      >    I'm getting a good speed of 120Mbps at times over 4Gbps FC.
>      >    My questions are
>      >    1) Is it really good speed over a 4Gbps FC ?
>      >    2) I start getting rport failure error if I repeat the tests for
>      3-4 times
>      >    so is it normal ?
>      >    3) To solve above question xenserver forums are asking to upgrade
>      the
>      >    qlogic drivers, so are there any ?
>      >    4) There is no scli command in XCP1 version but as I remember there
>      was
>      >    "scli" command in XCP0.5, so is there a way to get back it ?
>      >    5) If I want to limit the storage access speed of VM what can I do
>      ?
>      >
>      >    Thanks for help.
>      >
>      >    Regards,
>      >    Rushi
> 
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