[Bug 225588] VirtualBox 5.2.6 guests freeze after a while, sometimes with I/O errors

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=225588

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

I spoke too soon about 5.2.8 solving the problem.  The latest round of CentOS
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 SATA
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 settings.

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