Hi,
.device units stopped showing up for me in git systemd since somewhere around
mid-december. I have noticed that udevd and even udevadm monitor receives the
kernel events but systemd itself never receives them.
Further debugging, I have found out device_dispatch_io() (src/core/device.c) is
never being called. It seemed like systemd binary is never aware of kernel
events. I have proved this by:
1) strace -p 1
2) udevadm monitor
3) echo add > /sys/devices/platform/elk/net/eth0/uevent
4) Looking at the output of strace, nothing is changed, it is still in
epoll_wait.
Process 1 attached - interrupt to quit
clock_gettime(CLOCK_MONOTONIC, {1030, 364651245}) = 0
epoll_wait(4,
5) Looking at udevadm I can see the event being received.
monitor will print the received events for:
UDEV - the event which udev sends out after rule processing
KERNEL - the kernel uevent
KERNEL[1064.673596] add /devices/platform/elk/net/eth0 (net)
UDEV [1064.983686] add /devices/platform/elk/net/eth0 (net)
I have asked around in IIRC and seems like no one else is having the same
problem. Before I further debug it, I wanted to check if something else might
be stealing the epoll events from systemd or if anyone else has a suggestion.
Our system is an embedded system with linux 3.10. We do not use hwdb.bin.
Thanks
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