fuel-agent can't mkfs during baremetal provisioning

Detailed bug description:

When I create baremetal instance, getting error during provision.
Ramdisk image succesfully booting and then /usr/bin/provision proccess starting
When fuel_agent.manager.Manager#do_copyimage works, I am getting error like that:

Unexpected error while running command.
Command: mount -t ext4 /dev/sda3 /tmp/tmpPTn6BP

When I check the partition table, parted shows me sda3 has no filesystem.

Number Start End Size File system Name Flags
 1 262kB 26.2MB 26.0MB primary bios_grub
 2 27.3MB 237MB 210MB primary
 3 238MB 33.9GB 33.6GB primary
 4 33.9GB 146GB 112GB ext4 primary

Full fuel-agent.log attached.

Also fuel_disk_info of instance image added additional information section.

Steps to reproduce:
1. Hit instance create button

Expected results:

Baremetal instance provisioned

Actual result:

Getting error:

Output:
http://paste.openstack.org/show/603012/

Reproducibility:
 Every time i created instance

Workaround:
 Nope

Impact:

 Can not create baremetal instance

Description of the environment:
 Operation system: Ubuntu 14.04
 Versions of components:
   Openstack Mitaka
   Fuel 9.2
   ironic --version 1.3.0
   ironic-conductor --version 5.1.2

 Reference architecture:
 Network model:
 Related projects installed: Ironic
 Additional information:

fuel_disk_info =
[{
 "name": "sda",
 "extra": [],
 "volumes": [{
  "size": 32091,
  "type": "partition",
  "mount": "/",
  "file_system": "ext4",
  "keep_data": false
 }, {
  "size": 107260,
  "type": "partition",
  "mount": "/userdata",
  "file_system": "ext4",
  "keep_data": false
 }],
 "id": "disk/by-path/pci-0000:03:00.0-scsi-0:1:0:0",
 "type": "disk",
 "size": 139351,
 "free_space": 139351
}]