[systemd-devel] hinting systemd about what to do to make a device appear

[martin f krafft]

also sprach Lennart Poettering <lennart at poettering.net> [2015-09-10 12:28 +0200]:
> Does udev know about the symlink? I.e. does "udevadm info" show it?
> Which component is creating it? Only symlinks created by udev are
> known by udev and systemd. To support this, the drbd support needs to
> install rules files that create them, and not touch /dev directly. In
> fact, nothing ever should touch /dev directly, except for udev.

Yes, this symlink is put in place by udev rules, and udevadm knows
about it:

  E: DEVLINKS=/dev/drbd/by-disk/mapper/shelter-drbd /dev/drbd/by-res/backup

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