Hello !

udisks/gnome-disks used to support MD RAID some time ago. Intel would like to help in bringing back the MD RAID functionality adding support for IMSM containers (http://www.intel.com/design/chipsets/matrixstorage_sb.htm). Such enhancement would require to add necessary API in udisks (https://bugs.freedesktop.org/show_bug.cgi?id=53239) and to extend gnome-disks so that following operations are achievable:

1) Container
  a) Creating a container.
  b) Removing a container.

2) RAID volume
  a) Creating a regular RAID volume.
  b) Creating a RAID volume inside a container.
  c) Deleting any RAID volume.
  d) Creating / deleting partitions in a RAID volume.
  e) Formatting the whole volume or partitions inside it.
  f) Mounting / unmounting volume's partitions.
  g) Modifying RAID (for instance, with 'mdadm --grow')

The details tab could provide the following data (not necessarily in that order):

1) Container
  a) Container's name
  b) Path to device representing container (/dev/md/[...])
  c) Amount of disks belonging to container
  d) Paths to those disks (/dev/[...], could be links to their respective tabs in gnome-disks)
  e) UUID of the container
  f) Amount of RAID volumes inside the container
  g) Status of RAID volumes

2) RAID volume
  a) RAID's name
  b) RAID's level
  c) RAID's state + progress of any operation (resync/rebuild)
  d) Slots (for example, [UUU] as in mdadm -E)
  e) Array size
  f) Chunk size
  g) Amount of disks used by the array & paths to disks (could be in form of links to their respective tabs in gnome-disks)
  h) Path to device representing RAID volume (/dev/md/[...])
  i) Partitions inside the array (like any other block device now in gnome-disks)

We discussed the GUI briefly with David and we reached following conclusions about visual aspects:

-> any creation/adding operation should be added as a new option to the '+' button (like in http://www.asciiflow.com/#Draw9175267028218312066)
-> any delete/removal operation should be done by marking the target (mounted disk image, container, RAID) and clicking on the '-' button

Everything mentioned above is an initial sketch and everybody's welcome to make suggestions about the design and/or functionality.