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Date:      Sun, 24 Jun 2018 01:13:29 +0800
From:      Ben Woods <woodsb02@gmail.com>
To:        Joe Maloney <jmaloney@ixsystems.com>
Cc:        Allan Jude <allanjude@freebsd.org>, Warner Losh <imp@bsdimp.com>,  FreeBSD Current <freebsd-current@freebsd.org>
Subject:   Re: Boot freezing after kernel load - root on zfs
Message-ID:  <CAOc73CAQ2ix_iLheqj-r0reS2jSU3vxYLCVUdVB5G9svYwmvmA@mail.gmail.com>
In-Reply-To: <3BCF59A2-308D-4A45-97EA-C25397F50C24@ixsystems.com>
References:  <CAOc73CCLJxhqJSQybcCQyzSGYVxCD7-UMWccDoaSpWPhYbkZJg@mail.gmail.com> <EA2CF380-E94D-44FC-AE8B-A422878390D3@FreeBSD.org> <CAOc73CDL%2BSJB1pD3O0-7-8qzpyJMZ_mhP7Kg4a-jNQttkh5djw@mail.gmail.com> <CANCZdfoJBrcN6LmUwiK_BQK9Odt9aUL_gaJmfd=WhDJR1jor0A@mail.gmail.com> <85e188ff-a9db-3120-2709-1030640250e7@freebsd.org> <3BCF59A2-308D-4A45-97EA-C25397F50C24@ixsystems.com>

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On 23 June 2018 at 22:56, Joe Maloney <jmaloney@ixsystems.com> wrote:

> Ben,
> do you by chance have multicons enabled with comconsole, vidconsole?  Thi=
s
> looks exactly like a race we encountered where the remaining output was
> actually being redirected to serial on some systems when multicons was
> being used.  It appeared to be a lockup when it wasn=E2=80=99t because ke=
yboard
> input would also break.
>

Hi Joe,

Indeed, you are right - I have now fixed the problem! Thanks very much for
your help!

I was previously using a serial console to boot the machine, whereas now I
have an IP KVM.

The lines I commented out in my /boot/loader.conf to fix this were:
boot_multicons=3D"YES"
boot_serial=3D"YES"
comconsole_speed=3D"115200"
console=3D"comconsole,vidconsole"

I would have thought that the boot should still complete regardless of
whether the serial console is connected or not?

Regards,
Ben

--
From: Benjamin Woods
woodsb02@gmail.com



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