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Date:      Wed, 14 Mar 2018 18:43:39 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-virtualization@FreeBSD.org
Subject:   [Bug 225588] VirtualBox 5.2.6 guests freeze after a while, sometimes with I/O errors
Message-ID:  <bug-225588-27103-C8HE3CL1Bq@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-225588-27103@https.bugs.freebsd.org/bugzilla/>
References:  <bug-225588-27103@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D225588

--- Comment #6 from Jason W. Bacon <jwb@freebsd.org> ---
Interesting...

I spoke too soon about 5.2.8 solving the problem.  The latest round of Cent=
OS
Yum updates triggered it again.

I restored the .vdi file using an OVA snapshot and reran updates + zeroing =
free
blocks (in prep for compressing the disk image).

Did this procedure twice, once with IDE and no host cache, and again with S=
ATA
and host cache.

No problems in either case.

So it looks like we may have a workaround.

It's still a mystery why this problem popped up in 5.2.6, though.  I've been
running CentOS VMs for years and never had to care about controller setting=
s.

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