[systemd-devel] systemd intentional behaviour? (signals)

[Alex Elsayed]

Lennart Poettering wrote:
> 
> If we are crashed we are crashed.
> 
> I looked into reexecing systemd in this case, but unfortunately the
> kernel does not allow reexecing of PID 1 after it crashed. Not entirely
> sure what's going on there. But even if that worked I am not sure this
> would be too useful since most of its state would be lost...
> 
> Lennart
> 

Once cgroup xattrs go in, would serializing state into xattrs in the cgroup 
tree on-the-fly be an option? Eliminating the need to reactively serialize 
on reexec by proactively serializing in a continuous manner might resolve 
the loss-of-state issue.

There would still need to be a way to reexec PID 1 on crash, but at least 
state would be saved.