Re: [Xen-users] ubuntu13.04 host and ubuntu13.04 guest how to config the pvscsi

[é æ <altman87120@xxxxxxxxx>]

Hi, Wei Liu !

This is what it show to me.

root@ubuntu:/boot# grep XEN config-3.8.0-19-generic 

CONFIG_XEN=y

CONFIG_XEN_DOM0=y

CONFIG_XEN_PRIVILEGED_GUEST=y

CONFIG_XEN_PVHVM=y

CONFIG_XEN_MAX_DOMAIN_MEMORY=500

CONFIG_XEN_SAVE_RESTORE=y

# CONFIG_XEN_DEBUG_FS is not set

CONFIG_PCI_XEN=y

CONFIG_XEN_PCIDEV_FRONTEND=m

CONFIG_XEN_BLKDEV_FRONTEND=y

CONFIG_XEN_BLKDEV_BACKEND=m

CONFIG_NETXEN_NIC=m

CONFIG_XEN_NETDEV_FRONTEND=y

CONFIG_XEN_NETDEV_BACKEND=m

CONFIG_INPUT_XEN_KBDDEV_FRONTEND=m

CONFIG_HVC_XEN=y

CONFIG_HVC_XEN_FRONTEND=y

CONFIG_XEN_WDT=m

CONFIG_XEN_FBDEV_FRONTEND=m

CONFIG_XEN_BALLOON=y

CONFIG_XEN_SELFBALLOONING=y

CONFIG_XEN_BALLOON_MEMORY_HOTPLUG=y

CONFIG_XEN_SCRUB_PAGES=y

CONFIG_XEN_DEV_EVTCHN=m

CONFIG_XEN_BACKEND=y

CONFIG_XENFS=m

CONFIG_XEN_COMPAT_XENFS=y

CONFIG_XEN_SYS_HYPERVISOR=y

CONFIG_XEN_XENBUS_FRONTEND=y

CONFIG_XEN_GNTDEV=m

CONFIG_XEN_GRANT_DEV_ALLOC=m

CONFIG_SWIOTLB_XEN=y

CONFIG_XEN_TMEM=y

CONFIG_XEN_PCIDEV_BACKEND=m

CONFIG_XEN_PRIVCMD=m

CONFIG_XEN_ACPI_PROCESSOR=y

CONFIG_XEN_MCE_LOG=y

CONFIG_XEN_HAVE_PVMMU=y

And I don't find the word "PVSCSI". Does it demonstrate my kernel don't have PVSCSI complied ?  And could I compile my kernel to make it work ? 

And if we use PVSCSI, could it improves the PVHVM disk IO performance? And other benefit?

On 2013-4-26, at äå9:56, Wei Liu <wei.liu2@xxxxxxxxxx> wrote:

On Fri, Apr 26, 2013 at 10:28:51AM +0100, é æ wrote:

Thanks!

But all we use is kernel 3.8.0-19-generic. Does this kernel include the scsifront/scsiback support? If not, how can we change add the support?

Try to grep for XEN in kernel config file (which should be located in
/boot) and see if PVSCSI is upstream. I doubt that it is not because I
could not find them in my dev branch.


Wei.

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