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

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Tue, Aug 30, 2011 at 12:09:23AM +0530, R J wrote:
>    On Mon, Aug 29, 2011 at 10:39 PM, Pasi Kärkkäinen <[1]pasik@xxxxxx> wrote:
> 
>      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.
> 
>    Hmm so this is an expected start, I should read and find on VF.
>    Please share some links if you have :)
> 
>      So first benchmark the storage from baremetal Linux, with no
>      virtualization,
>      and the compare to the results you get from the XCP VM.
> 
> 
>    I don't want to compare baremetal linux and XCP VM.
>    I want to compare the XCP VM with SR-IOV to XCP VM without SR-IOV.
>    Also few other questions which may not be related to SR-IOV are listed
>    down.
> 

So what FC HBA do you have? Does it have SR-IOV VFs?

-- Pasi


>      >    Thanks for help.
>      >
>      >    Regards,
>      >    Rushi
>      >
>      >    On Mon, Aug 29, 2011 at 8:57 PM, Pasi Kärkkäinen
>      <[1][2]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
> 
> 
>    These were my original questions
> 
>      >      >    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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