On Fri, 11 Apr 2014 13:01:49 +0200 Francis Moreau <francis.moro@xxxxxxxxx> wrote: > Hello, > > I'm writing a tool that relies udev lib in order to manage block > devices connected to my computer. > > One thing that I need is to retrieve disks contained by a RAID array. > > The current usefull information exported by udev are, for example: > > MD_DEVICES=3 > MD_DEVICE_loop0p1_DEV=/dev/loop0p1 > MD_DEVICE_loop0p1_ROLE=0 > MD_DEVICE_loop1p1_DEV=/dev/loop1p1 > MD_DEVICE_loop1p1_ROLE=1 > MD_DEVICE_loop2p1_DEV=/dev/loop2p1 > MD_DEVICE_loop2p1_ROLE=2 > > but this is not really easy to exploit since I need to know the disk > names in order to poke the devices used by the array :-/ > > why not simply using ? > > MD_DEVICE_DEV_1=/dev/loop0p1 > MD_DEVICE_ROLE_1=0 > What number would I use for spare devices? Certainly something like this could be done, but it wasn't. Maybe what you are really asking is: "Could we please have another record which lists all the devices, e.g. MD_DEVICE_LIST=loop0p1 loop1p1 loop2p1 ??" Obviously you can extract that from the output above, but it might be easier to have it explicitly. Would that meet your need, or have I misunderstood you completely? NeilBrown
Attachment:
signature.asc
Description: PGP signature
