[systemd-devel] Using btrfs subvolumes with systemd

[Andrei Borzenkov]

09.06.2016 23:30, Florent Peterschmitt пишет:
> 
> The log with systemd.log_level=debug at boot is located here: http://data.peterschmitt.fr/systemd.log
> 

Unfortunately this log while being verbose does not add any useful
information.

> Here is the output from udevadm about /dev/mapper/root:
> 
> # udevadm info /dev/mapper/root
> P: /devices/virtual/block/dm-0
> N: dm-0
> E: DEVNAME=/dev/dm-0
> E: DEVPATH=/devices/virtual/block/dm-0
> E: DEVTYPE=disk
> E: DM_UDEV_DISABLE_DISK_RULES_FLAG=1
> E: DM_UDEV_DISABLE_OTHER_RULES_FLAG=1
> E: DM_UDEV_DISABLE_SUBSYSTEM_RULES_FLAG=1
> E: MAJOR=253
> E: MINOR=0
> E: SUBSYSTEM=block
> E: SYSTEMD_READY=0

Which explains why systemd ignores this device.

Look in initrd udev rules for SYSTEMD_READY assignment and post all
rules that do it.