On Mon, May 12, 2014 at 05:18:56PM +0200, Kay Sievers wrote:
> > I just looked up libudev and it looks like there is even a pyudev wrapper,
> > so that could indeed work better. I take it that queries via
> > udev_enumerate for (say) ID_PART_ENTRY_TYPE=x are efficient?
>
> Sure, filter for "block" devices and this or other GPT properties. The
> libudev API will just find the devices is /sys and read the database
> files in tmpfs /run and, it will not talk to any devices, so it should
> perform pretty well.
and on command line lsblk(8) reads the info from udev db, so you can
use:
$ lsblk -o+PARTTYPE
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT PARTTYPE
sda 8:0 0 149.1G 0 disk
├─sda1 8:1 0 1000M 0 part /boot c12a7328-f81f-11d2-ba4b-00a0c93ec93b
├─sda2 8:2 0 2G 0 part ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
├─sda3 8:3 0 9.7G 0 part [SWAP] 0657fd6d-a4ab-43c4-84e5-0933c84b4f4f
├─sda4 8:4 0 34.2G 0 part / ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
├─sda5 8:5 0 63.2G 0 part /home ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
└─sda6 8:6 0 39.1G 0 part ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
(well, this is from git tree, will be in v2.25 :-)
Karel
--
Karel Zak <kzak@xxxxxxxxxx>
http://karelzak.blogspot.com
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