[Ovirt-devel] RFC - Design of new MPATH device menu in o-c-storage

[Mike Burns]

I am designing a new menu to allow a user to select an mpath device for installation without having to drop down to the shell to do setup.  A patch to ovirt-node-image has already been posted to enable multipathd by default.  The new menu will appear as an option under the normal o-c-storage menu.  Not that a few of the open design questions are marked in ??

comments are appreciated

Work flow for mpath setup

o-c-setup menu (choose 1 for storage)

Add new option to o-c-storage menu - "Multipath device" that will spawn the new submenu

Multipath Device Submenu
Display:

List of all Block devices for user to selectively choose 
? Should options be toggles, i.e. choose once to enable, choose again to disable ?
? do we need some way to show whether device is chosen or not (Yes if ^^, no otherwise ?

Stay on this menu until either "All" or "Finished" is chosen

Other Options
Finished - proceed from this menu - fall back to Multipath device menu if no devices chosen
Abort - go back to previous menu
blank - same menu redisplayed
All - Add all devices


**Background action**
Based on input, blacklist all but the devices chosen in multipath.conf
restart multipathd service


**New Menu**
Display:

List of mpath devices with similar format to o-c-storage main menu

Other options
Abort option to cancel multipath config and return to main menu
    ?? should abort cleanup multipath.conf setup ? 
blank input - redisplay menu

Choose mpath device -> go to standard partition questions