[systemd-devel] Backup the current boot logs in raw format

[Zbigniew Jędrzejewski-Szmek]

On Thu, Aug 01, 2019 at 09:11:19AM +0200, Francis Moreau wrote:
> On Wed, Jul 24, 2019 at 4:08 PM Zbigniew Jędrzejewski-Szmek
> <zbyszek at in.waw.pl> wrote:
> > you can export and write to a journal file with:
> >   journalctl -o export ... | /usr/lib/systemd/systemd-journal-remote -o /tmp/foo.journal -
> > This has the advantage that you can apply any journalctl filter where
> > the dots are, e.g. '-b'.
> 
> This doesn't look to work correctly:
> 
> $ journalctl -b | head
> -- Logs begin at Thu 2017-04-13 14:05:51 CEST, end at Thu 2019-08-01
> 08:51:39 CEST. --
> Mar 25 06:51:35 crapovo kernel: microcode: microcode updated early to
> revision 0x25, date = 2018-04-02
> 
> $ journalctl -o export -b | /usr/lib/systemd/systemd-journal-remote -o
> /tmp/foo.journal -
> $ journalctl -b --file=/tmp/foo.journal | head
> -- Logs begin at Sat 2019-06-22 18:32:31 CEST, end at Thu 2019-08-01
> 08:45:45 CEST. --
> Jun 22 18:32:31 crapovo polkitd[1278]: Unregistered Authentication
> Agent for unix-process:7300:772806437 (system bus name :1.4562, object
> path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale
> en_US.UTF-8) (disconnected from bus)
> 
> As you can see, the start is not the same.
> 
> Also are foo.journal data compressed ?

What does "ls /tmp/foo*" say?

Zbyszek