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Date:      Tue, 07 Mar 2017 16:49:51 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-bugs@FreeBSD.org
Subject:   [Bug 168298] VirtualBox using AIO on a zvol crashes
Message-ID:  <bug-168298-8-1noD90EqIx@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-168298-8@https.bugs.freebsd.org/bugzilla/>
References:  <bug-168298-8@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D168298

--- Comment #8 from rkoberman@gmail.com ---
I have done some experimentation and havebeen able to modify these settings=
 to
less extreme values and still get VB to run without failing.
vfs.aio.max_aio_queue: 8192
vfs.aio.max_aio_queue_per_proc: 1024
vfs.aio.max_aio_per_proc: 128
vfs.aio.max_buf_aio: 64

I will admit that I have not tried tweaking these values for some time and I
suspect come are still allowing the consumption of more resources than need=
ed,
but these are safer than those I first proposed.

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