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Date:      Fri, 19 Apr 2019 06:21:56 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 237261] Boot stuck in endless ATAPI_IDENTIFY attempts
Message-ID:  <bug-237261-227-67RjZQ96y9@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-237261-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-237261-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D237261

--- Comment #4 from Andriy Gapon <avg@FreeBSD.org> ---
(In reply to Mikhail Teterin from comment #2)
I wonder how long you waited at most?
I suspect that after some, quite long, time the system would eventually
continue to boot. The ATAPI_IDENTIFY timeout is quite large and there is a
number of retries on a couple of levels.

The problem seems to be that for some reason the system seems to "detect" a
phantom ATAPI slave on the same channel as the CD-ROM device (devices=3D0x3=
0000
-- this mask contains two devices on the channel).
Maybe the older code had a way to check that it is a phantom device or mayb=
e it
just failed the phantom much faster.

Could you please attach a verbose dmesg from FreeBSD 8 ?

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