Lennart,
Is it not possible for a udev rule like the following to work? MYVAR has been
imported (with value sda) and is visible for the block device. I verified it
with udevadm info --query=name -x sda.
KERNEL=="%E{MYVAR}", TAG+="test"
The end result is that this rule doesn't fire. Could someone explain why?
According to the man pages, I think this should work.
Kind Regards,
Kevin
-----Original Message-----
From: Lennart Poettering <[email protected]>
Sent: Monday, January 13, 2020 10:54 AM
To: Boyce, Kevin P [US] (AS) <[email protected]>
Cc: [email protected]
Subject: Re: EXT :Re: [systemd-devel] Systemd udev add tag for boot device
On Mo, 13.01.20 09:10, Boyce, Kevin P. (AS) ([email protected]) wrote:
> Thank you Lennart.
>
> I'm thinking I will create my own sort of "built-in" command that can
> parse /proc/cmdline to look for the root= variable early in udev rules
> so I can create the tag.
So, systemd has to for determining the backing file system of some directory
and this is used by gpt-auto-generator for finding the block device backing /
or /usr/. I figure you want something like that?
We don't expose that directly though, and it's limited, since we do not cover
complex storage. We do cover btrfs though.
Lennart
--
Lennart Poettering, Berlin
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