Old lvm metadata on partitons breaks deployment of ceph-osd

{
    "api": "1.0",
    "astute_sha": "a7eac46348dc77fc2723c6fcc3dbc66cc1a83152",
    "build_id": "2014-05-26_18-06-28",
    "build_number": "24",
    "fuellib_sha": "2f79c0415159651fc1978d99bd791079d1ae4a06",
    "fuelmain_sha": "d7f86968880a484d51f99a9fc439ef21139ea0b0",
    "mirantis": "yes",
    "nailgun_sha": "bd09f89ef56176f64ad5decd4128933c96cb20f4",
    "ostf_sha": "89bbddb78132e2997d82adc5ae5db9dcb7a35bcd",
    "production": "docker",
    "release": "5.0"
}

Environment:
multinode, 1 controller+ceph-osd, 1 compute+ceph-osd, 1 mongodb.
        "volumes_lvm": False,
        "volumes_ceph": True,
        "images_ceph": True,
        "murano": True,
        "sahara": True,
        "ceilometer": True,
        "net_provider": 'neutron',
        "net_segment_type": 'gre',
        "libvirt_type": "kvm"

After several re-deployments of the same environment I've hit the following deployment error on controller+cephosd node:

/usr/bin/ceph-deploy osd prepare node-2:/dev/sda5
raise Error('Device is in use by a device-mapper mapping (dm-crypt?)' % dev, ','.join(holders)

Checking the problem controller+cephosd node showed that we have "mongo" LVM on /dev/sda5 that is supposed to be used for ceph-osd (we're running mongodb on the different node):

# lvdisplay
  --- Logical volume ---
  LV Name /dev/mongo/mongodb
  VG Name mongo
  LV UUID EKaLrw-AYUR-e241-vqzo-zRMp-XxVZ-OMSrvB
  LV Write Access read/write
  LV Status available
  # open 0
  LV Size 173.66 GiB
  Current LE 5557
  Segments 1
  Allocation inherit
  Read ahead sectors auto
  - currently set to 256
  Block device 252:0

# pvdisplay
  --- Physical volume ---
  PV Name /dev/sda5
  VG Name mongo
  PV Size 173.71 GiB / not usable 27.00 MiB
  Allocatable yes
  PE Size 32.00 MiB
  Total PE 5558
  Free PE 1
  Allocated PE 5557
  PV UUID aEx26m-XxSQ-8eUK-63Io-SqBn-vZAZ-UTnokS

It looks like this is happening because we create /dev/sda5 partition during provisioning after lvm metadata cleaning and it may retain old lvm metadata:

2014-05-27T09:48:41.291249+00:00 notice: find /dev ( -type l -o -type b ) -exec ls -l {} ;
2014-05-27T09:48:41.294841+00:00 notice: brw------- 1 root root 8, 4 May 27 09:48 /dev/sda4
2014-05-27T09:48:41.296618+00:00 notice: brw------- 1 root root 8, 3 May 27 09:48 /dev/sda3
2014-05-27T09:48:41.298284+00:00 notice: brw------- 1 root root 8, 2 May 27 09:48 /dev/sda2
2014-05-27T09:48:41.300282+00:00 notice: brw------- 1 root root 8, 1 May 27 09:48 /dev/sda1
...
2014-05-27T09:48:42.368051+00:00 notice: === before additional cleaning ===
2014-05-27T09:48:42.370608+00:00 notice: vgs -a --noheadings
2014-05-27T09:48:42.380603+00:00 notice: No volume groups found
....
2014-05-27T09:48:42.598125+00:00 notice: parted -a none -s $(readlink -f $( (ls /dev/disk/by-id/wwn-0x50014ee1033d5fd6 ||
2014-05-27T09:48:42.599108+00:00 notice: ls /dev/disk/by-id/scsi-SATA_WDC_WD2502ABYS-_WD-WCAT1H270422 || ls /dev/disk/by
2014-05-27T09:48:42.600087+00:00 notice: -id/ata-WDC_WD2502ABYS-18B7A0_WD-WCAT1H270422 || ls /dev/disk/by-path/pci-0000:0
2014-05-27T09:48:42.601049+00:00 notice: 0:1f.2-scsi-0:0:0:0) 2>/dev/null) ) unit MiB mkpart primary 60195 238078
....
2014-05-27T09:48:53.260547+00:00 notice: find /dev ( -type l -o -type b ) -exec ls -l {} ;
2014-05-27T09:48:53.264081+00:00 notice: lrwxrwxrwx 1 root root 7 May 27 09:48 /dev/mongo/mongodb -> ../dm-0
2014-05-27T09:48:53.267014+00:00 notice: brw------- 1 root root 252, 0 May 27 09:48 /dev/dm-0
2014-05-27T09:48:53.268727+00:00 notice: brw------- 1 root root 8, 5 May 27 09:48 /dev/sda5
2014-05-27T09:48:53.271018+00:00 notice: brw------- 1 root root 8, 4 May 27 09:48 /dev/sda4
2014-05-27T09:48:53.272770+00:00 notice: brw------- 1 root root 8, 3 May 27 09:48 /dev/sda3
2014-05-27T09:48:53.274522+00:00 notice: brw------- 1 root root 8, 2 May 27 09:48 /dev/sda2
2014-05-27T09:48:53.276428+00:00 notice: brw------- 1 root root 8, 1 May 27 09:48 /dev/sda1

As you can see in the logs above, we had no LVM data on our disks, but it appeared right after we created /dev/sda5 partition.