Bug#852194: make a /run/initramfs/messages

[積丹尼 Dan Jacobson <jidanni@jidanni.org>]

BH> initramfs-tools does not use systemd.  If systemd is failing to log its
BH>  output at boot time, that is not a bug in initramfs-tools.

OK I filed #852229 [systemd] failing to log output at boot time

BH> (I recognise that initramfs-tools should log output before it hands
BH> over to systemd (or other init system), so this is a valid bug.
BH> Unfortunately it will not be easy to do this consistently.)

Yes even though the user sees them flying by in the original order on
the screen, alas you will probably have to collect them into separate files
depending on where they came from. It is too bad they can't be put into
the dmesg/syslog... or actually they could. With just a simple logger(1) command(?).