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Date:      Fri, 11 Nov 2016 12:37:19 +0000
From:      Matthew Seaman <matthew@FreeBSD.org>
To:        freebsd-questions@freebsd.org
Subject:   Re: unknown error during root mount on boot (fstab) in 11.0-RELEASE (after updating)
Message-ID:  <fadc8b19-27c8-9a84-72a6-0ae56d0c9bbe@FreeBSD.org>
In-Reply-To: <ad7d752e-054a-569c-432e-3adc501dd6d1@kukulies.org>
References:  <7f9d7051-be30-54dd-55be-0fa236c28d84@kukulies.org> <e8ed05d3-1242-6bda-6269-20c653118d58@FreeBSD.org> <fae87b2a-07f8-83ff-9b70-9df4ca8686b5@kukulies.org> <eb270d9e-3681-1a26-3347-53f6571ac8d4@freebsd.org> <82d02692-f98e-4605-a002-a7ffcdfdf233@kukulies.org> <bb8d2164-7f46-7c08-2934-14ca5c1c343d@infracaninophile.co.uk> <0ca25b5a-1b97-e2b4-2966-79e7087db3ef@kukulies.org> <090fb456-257b-f916-8e2d-a581a994d488@freebsd.org> <ad7d752e-054a-569c-432e-3adc501dd6d1@kukulies.org>

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From: Matthew Seaman <matthew@FreeBSD.org>
To: freebsd-questions@freebsd.org
Message-ID: <fadc8b19-27c8-9a84-72a6-0ae56d0c9bbe@FreeBSD.org>
Subject: Re: unknown error during root mount on boot (fstab) in 11.0-RELEASE
 (after updating)
References: <7f9d7051-be30-54dd-55be-0fa236c28d84@kukulies.org>
 <e8ed05d3-1242-6bda-6269-20c653118d58@FreeBSD.org>
 <fae87b2a-07f8-83ff-9b70-9df4ca8686b5@kukulies.org>
 <eb270d9e-3681-1a26-3347-53f6571ac8d4@freebsd.org>
 <82d02692-f98e-4605-a002-a7ffcdfdf233@kukulies.org>
 <bb8d2164-7f46-7c08-2934-14ca5c1c343d@infracaninophile.co.uk>
 <0ca25b5a-1b97-e2b4-2966-79e7087db3ef@kukulies.org>
 <090fb456-257b-f916-8e2d-a581a994d488@freebsd.org>
 <ad7d752e-054a-569c-432e-3adc501dd6d1@kukulies.org>
In-Reply-To: <ad7d752e-054a-569c-432e-3adc501dd6d1@kukulies.org>

--da43x2IWaLb3eBvLIU28LVoJLJ7LlgxEh
Content-Type: text/plain; charset=windows-1252
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On 2016/11/11 12:25, Christoph P.U. Kukulies wrote:
> As to the logging not working: so it's not possible to log what appears=

> on the console before the root FS is mounted read/write, right?

Well, yes.  It's not possible to log stuff (ie. via syslog) that happens
before /dev is mounted (so there's access to /dev/log and /dev/klog) --
but that happens really early once the system goes multiuser.  There is
some bufferring, so you'll see messages logged in sequence /before/
syslogd itself starts up.

See /var/run/dmesg.boot for the stuff the kernel prints out directly.

	Cheers,

	Matthew



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