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Date:      Thu, 7 Mar 2013 09:38:09 +0100
From:      =?ISO-8859-1?Q?Roger_Pau_Monn=E9?= <roger.pau@citrix.com>
To:        Jay West <jwest@ezwind.net>
Cc:        "freebsd-xen@freebsd.org" <freebsd-xen@freebsd.org>
Subject:   Re: misc. questions
Message-ID:  <513851F1.8080009@citrix.com>
In-Reply-To: <000601ce1aed$97e06540$c7a12fc0$@ezwind.net>
References:  <000901ce1aa7$90704320$b150c960$@ezwind.net> <op.wtjkuquy34t2sn@tech304.office.supranet.net> <000601ce1aed$97e06540$c7a12fc0$@ezwind.net>

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On 07/03/13 05:38, Jay West wrote:
> Mark wrote...
>> You're having success with Xenserver 6.1? That's good news. I wonder why
> XCP 1.6 is unable to boot FreeBSD if there's an emulated DVDROM? :(
> 
> Yes. Stock install 64bit 9.1-R as HVM, recompile kernel using supplied
> XENHVM config file. Then there's a few things to tweak before rebooting, one
> is fstab because of the different naming convention for disk devices or you
> choke on reboot after install (you can still do it after by entering correct
> device in boot string). The other is the cd drive, you have to remove the cd
> device (see http://support.citrix.com/article/CTX132411). There may be
> another step I'm forgetting, but that's the basic gist. Oh, and fix rc.conf
> to use the xen (xn0) network device. We are still having one really nagging
> issue - timekeeping. The clocks are way off and fluctuate wildly. FreeBSD is
> selecting the clock source (from several possibilities) that already has the
> highest stability rating, so I haven't tried setting the sysctl to use a
> different clock source. I see no way to fix this and it's pretty crippling
> in my environment anyways. Anyone have a fix for that?

I think there were several fixes for the RTC clock recently, so trying
the Xen 4.2 branch might bring some improvements.

Also, it is possible to use the PV clock from HVM (PVHVM) domains, which
will probably bring better stability. I'm going to look into this when I
have some spare cycles.




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