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Date: Fri, 10 Jan 2014 17:01:19 -0600 (CST)
From: Bryan Venteicher <bryanv@daemoninthecloset.org>
To: Venkatesh Srinivas <venkateshs@google.com>
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Subject: Re: UFS panic on Google Compute Engine
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----- Original Message -----
> We are looking in to this issue as well.
> 
> Could you try setting the sysctl kern.cam.da.<disk>.minimum_cmd_size
> to 10 and see if that works any better for you?
> 
> On 10 Jan 2014 Bryan Venteicher wrote:
> > On 9 Jan 2014 Julian Stecklina wrote:
> >> Also weird is that the same virtual disk pops up two times:
> ...
> > Odd, but they're different LUNs.
> 
> The doubled LUNs issue is actually a bug in the FreeBSD virtio-scsi
> driver, masked in QEMU but not in GCE; see kern pr/185626.
> 


Ah thanks. I think early pre-spec VirtIO SCSI QEMU used a different
addressing format and I ended up with an unfortunate mix of both.


> -- vs;
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