Re: [Xen-devel] OSSTest -- debian-hvm-install, how to see the progress of guest auto installation

["Hu, Robert" <robert.hu@xxxxxxxxx>]

> -----Original Message-----
> From: Ian Campbell [mailto:ian.campbell@xxxxxxxxxx]
> Sent: Friday, July 31, 2015 3:53 PM
> To: Hu, Robert; ian.jackson@xxxxxxxxxxxxx; wei.liu2@xxxxxxxxxx
> Cc: xen-devel@xxxxxxxxxxxxx
> Subject: Re: OSSTest -- debian-hvm-install, how to see the progress of guest
> auto installation
> 
> On Fri, 2015-07-31 at 07:20 +0000, Hu, Robert wrote:
> > Hi,
> >
> > During the hvm guest auto installation, how can I inspect its progress?
> 
> It's serial console is logged to the qemu-dm log, something like
> /var/log/xen/qemu-dm-$guestname.log I think.
> 
> > Currently I encountered some problems during hvm auto-installation;
> > after waited long time, several minutes, I vnc to it, it is black screen.
> 
> Right, I think that's expected because the installer is running on the
> serial console now.
> 
> Currently the qemu-dm log is a mess of ANSI escape codes. If you "cat
> /var/log/..." then your terminal will decode it and show the last thing on
> the screen (hopefully an error dialog).
Aha, fortunately, just found 'tail -f ...' output formatted ANSI chart; I can
see its progress now.
> 
> My series "fixes to ts-debian-hvm-install" posted to xen-devel on Monday
> incorporates a switch to using DEBIAN_FRONTEND=text which produces a
> more
> useful text log from the installer (the same as is used for host kernel
> today).
> 
> >
> > I'm using debian 7.2 for guest installation. And I saw Ian C. 's patch
> > commit c60b6d20b0fd29836a224fdaf9f0d06272144b46
> > Author: Ian Campbell <ian.campbell@xxxxxxxxxx>
> > Date:   Mon Jul 6 14:45:12 2015 +0100
> >
> >     ts-debian-hvm-install: Arrange for installed guest to use a serial
> > console
> >
> >     So that the guest boot will be logged somewhere useful (the
> qemu-dm
> >     log).
> >
> >     It still seems to pickup a "quiet" from somewhere, so it's not as
> >     useful as it might be, but it is an improvement.
> >
> > debian 7.2 shall using kernel < 3.15,
> 
> Debian 7 (and all point releases) is using a 3.2 kernel.
> 
> >  not sure if this commit causes the problem I'm meeting.
> 
> This commit will have changed where the guest console log will go but I
> don't expect it to have caused whatever the underlying problem you are
> seeing is.
> 
> Ian.

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