[arch-general] Optimizing boot
Paul Gideon Dann
pdgiddie at gmail.com
Thu May 1 04:16:24 EDT 2014
On Wednesday 30 Apr 2014 23:26:48 Rodrigo Rivas wrote:
> Although the original problem has already been solved, I'll post my
> trick to debug this kind of issues with systemd:
> * Before doing the thing that causes the problem run as root
> `systemctl start debug-shell`. If the problem is in the boot sequence,
> then run `systemctl enable debug-shell` and then restart.
> * That unit will open a root shell in TTY9, so beware of the security
> issues if you let that enabled. This shell will be enabled from the
> early boot until the final shutdown.
> * When the system hangs, switch to TTY9, with Alt+F9 or Ctrl+Alt+F9
> and get access to the debug shell. There you can run `systemctl
> list-jobs` or `journalctl -b` to see what is wrong with your system.
Very useful; thank you. I wonder if you might write that up on the Wiki page for systemd?
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