Add dmraid functionality to new storage code.

* storage/devices.py (DMRaidArrayDevice): Complete the DMRaidArrayDevice
  class.
* storage/devices.py (PartitionDeviceFactory):  When creating a
  partition we need to decide, based on the device holding the
  partition, what type of partition class will be returned.
* storage/devices.py (PartitionDevice): When setting the disk we must be
  careful to change stuff accordingly.

* storage/devicetree.py (addUdevDevice): Handle the creation of the
  dmraid device and its members in the addUdeveDevice function.

* storage/formats/dmraid.py (DMRaidMember): Complete the format that
  handles devices being members of a dmraid array.
* storage/udev.py (udev_device_is_dmraid): add a function that
  recognizes dmraid devices from the provided info list.

* storage/udev.py (udev_device_get_dmraid_partition_disk): function that
  gets the disk string from partition info.
* storage/udev.py (udev_device_is_dmraid_partition): function that
  checks for dmraid partitions.

* storage/__init__.py (disks(self)): return a list of disks from the
  internal attribute.
* storage/__init__.py (Storage.disks): we really want to make sure we
  return all the objects that comply with the DiskDevice interface
  (inheret from DiskDevice)
* storage/__init__.py (Storage.partitions): Same as above but for
  PartitionDevice.

* iw/autopart_type (PartitionTypeWindow(InstallWindow)): use disk.name
  instead of munging the first 5 characters of the path.

* storage/partitioning (newPartition): Use the new partition factory to
  create a partition.

1 files changed, 33 insertions, 0 deletions

diff --git a/storage/udev.py b/storage/udev.py
index 6df00c855..a39b98c81 100644
--- a/storage/udev.py
+++ b/storage/udev.py
@@ -270,4 +270,37 @@ def udev_device_get_lv_sizes(info):
 
     return [float(s) / 1024 for s in sizes]
 
+def udev_device_is_dmraid(info):
+    # Note that this function does *not* identify raid sets.
+    # Tests to see if device is parto of a dmraid set.
+    # dmraid and mdriad have the same ID_FS_USAGE string,  ID_FS_TYPE has a
+    # string that describes the type of dmraid (isw_raid_member...),  I don't
+    # want to maintain a list and mdraid's ID_FS_TYPE='linux_raid_member', so
+    # dmraid will be everything that is raid and not linux_raid_member
+    if info.has_key("ID_FS_USAGE") and info.has_key("ID_FS_TYPE") and \
+            info["ID_FS_USAGE"] == "raid" and \
+            info["ID_FS_TYPE"] != "linux_raid_member":
+        return True
+
+    return False
+
+def udev_device_get_dmraid_partition_disk(info):
+    try:
+        p_index = info["DM_NAME"].rindex("p")
+    except:
+        return None
+
+    if not info["DM_NAME"][p_index+1:].isdigit():
+        return None
+
+    return info["DM_NAME"][:p_index]
+
+def udev_device_is_dmraid_partition(info, devicetree):
+    diskname = udev_device_get_dmraid_partition_disk(info)
+    dmraid_devices = devicetree.getDevicesByType("dm-raid array")
+
+    for device in dmraid_devices:
+        if diskname == device.name:
+            return True
 
+    return False