Re: Fedora LiveOS, journal missing ~25s of early boot

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Hello Chris,

Thanks a lot for your investigation, work to make this fixed and giving
us a heads-up. If I see it correctly it is now built in the Rawhide so
we don't have to intervene at this point.

If there anything else we can help you with. Feel free to ask.

Best Regards,

On Tue, 2019-07-30 at 10:10 -0600, Chris Murphy wrote:
> Hi,
> Summary: On Fedora LiveOS, e.g.
> Fedora-Workstation-Live-x86_64-Rawhide-20190728.n.1.iso, the journal
> is missing the first 20-30s of all boot/startup related messages. The
> reason is a bit complicated, systemd-journald appears to have a bug
> wanting keep_free space too high, and Fedora's lives have had
> shrinking free space consistently over time as the "payload" gets
> bigger. The result is now systemd-journald almost immediately vacuums
> the first journal file, deleting it, causing the loss of early boot
> and startup messages.
> Why I think Anaconda team might care: LiveOS is inherently a
> non-deterministic environment for the installer, and losing a bunch
> of
> early boot and startup messages like all the liveos assembly, the
> overlay (whether dm or overlayfs based in the future), networking,
> udev and other non-kernel device discovery, and dracut debug messages
> - don't exist in the journal and quite a lot of such messages for
> whatever reason do not forward to console or kmsg when using
> systemd.journald.forward_to_X parameters. Therefore if the journal is
> deleted, the messages are flat out gone and any troubleshooting and
> introspection is really difficult.
> I proposed this as a blocker bug.
> It's been rejected twice, mainly because the Fedora Basic Release
> Criterion for system logging applies to the post-installed system. It
> doesn't apply to any of the installer images. So there is a proposal
> over on test@ list to change the location of this requirement so that
> it applies to installer images. And I figured installer devs might
> have an opinion if this is blocker worthy.

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