[Xen-users] blktap2 returning error even with kernel modue on ubuntu 12.04

[kevin parker <kevin.parker092@xxxxxxxxx>]

Hi all,

        i am having some problem with making blktap2 to work on ubuntu 12.04 can you please help me on this.

   

Created PV guest ubuntu 12.04 64 bit on dom0 running Ubuntu 12.04 with initial configuration ['file:/VM/vm-images/para-ubuntu.img,xvda,w']  but after installing and booting vm,changed to blktap2 after installing its drivers on dom0 and made these changes to config file tap2:tapdisk:aio:

Drivers: 

apt-get install blktap-dkms blktap-utils

RESTARTED Dom0 after that.

but vm is not starting after making these change.Its showing (55808 blktap kernel module not installed )

Kernel modules list:

lsmod | grep xen 

xen_gntdev             17676  0 

xen_netback            27854  0 [permanent]

xen_blkback            23363  0 [permanent]

xen_evtchn             13172  3 

xenfs                      18311  1

xen version:

xen:4.1.2

Where can be the problem? if the kernel is missing that module which package should i install to fix it?

also i tried to change to tap:aio: In this case VM booted but inside vm i am getting 

Gave up waiting for root device.  Common problems:

 - Boot args (cat /proc/cmdline)

   - Check rootdelay= (did the system wait long enough?)

   - Check root= (did the system wait for the right device?)

 - Missing modules (cat /proc/modules; ls /dev)

ALERT!  /dev/disk/by-uuid/52e5d884-2d59-437d-b890-313266995a42 does not exist.  Dropping to a shell!

BusyBox v1.18.5 (Ubuntu 1:1.18.5-1ubuntu4) built-in shell (ash)

Enter 'help' for a list of built-in commands.

(initramfs)

It works ok if i use loop back by specifying file:/.Can any one please help me in solving it.

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