Re: [Xen-devel] Xen doesnt recognize my root fs, while native kernel can ???

["pradeep singh rautela" <rautelap@xxxxxxxxx>]

Hi All,

Why am i getting screenshot sent by Jun now after almost more than 24
hours late?

Something wrong somewhere ?

Any help?

thanks
--psr

On 6/13/07, Mark Williamson <mark.williamson@xxxxxxxxxxxx> wrote:
> > What a shame!!! I think I should go hanging myself!!!
> >
> > Good bye forever! Best wishes to you and Xen project!!!!!
>
> Don't worry, I do that sort of thing all the time.
>
> In fact, I'd bet that anybody who does any significant amount of advanced Xen
> development occasionally realises that the reason his cunning new feature
> ain't working is because he was doing something basic like booting the wrong
> kernel image, passing wrong args, etc.
>
> Good luck with whatever you're planning for Xen :-)
>
> Cheers,
> Mark
>
> >
> > Jun
> >
> > On 6/13/07, Petersson, Mats <Mats.Petersson@xxxxxxx> wrote:
> > > > -----Original Message-----
> > > > From: Keir Fraser [mailto:keir@xxxxxxxxxxxxx]
> > > > Sent: 13 June 2007 10:45
> > > > To: Jun Koi; Petersson, Mats
> > > > Cc: xen-devel
> > > > Subject: Re: [Xen-devel] Xen doesnt recognize my root fs,
> > > > while native kernel can ???
> > > >
> > > >
> > > > That's fine. My conclusion is that this is user error: you
> > > > are trying to
> > > > mount /boot/sda2 and you actually mean /dev/sda2.
> > >
> > > Well spotted. I just expected it to say "/dev/" rather than "/boot/".
> > >
> > > --
> > > Mats
> > >
> > > >  -- Keir
> > > >
> > > > On 13/6/07 10:21, "Jun Koi" <junkoi2004@xxxxxxxxx> wrote:
> > > > > Here is the screenshot taken with a digital camera. I hope
> > > >
> > > > the screen
> > > >
> > > > > is clear enough for you to see.
> > > > >
> > > > > Thanks,
> > > > > Jun
> > > > >
> > > > > On 6/13/07, Jun Koi <junkoi2004@xxxxxxxxx> wrote:
> > > > >> Hi Mats,
> > > > >>
> > > > >> On 6/13/07, Petersson, Mats <Mats.Petersson@xxxxxxx> wrote:
> > > > >>>> -----Original Message-----
> > > > >>>> From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
> > > > >>>> [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf
> > > >
> > > > Of Jun Koi
> > > >
> > > > >>>> Sent: 13 June 2007 09:54
> > > > >>>> To: Keir Fraser
> > > > >>>> Cc: xen-devel
> > > > >>>> Subject: Re: [Xen-devel] Xen doesnt recognize my root fs,
> > > > >>>> while native kernel can ???
> > > > >>>>
> > > > >>>> On 6/13/07, Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> wrote:
> > > > >>>>> On 13/6/07 08:49, "Jun Koi" <junkoi2004@xxxxxxxxx> wrote:
> > > > >>>>>>>> The point is that Xen doesnt boot in the first place,
> > > > >>>>
> > > > >>>> so I cannot
> > > > >>>>
> > > > >>>>>>>> provide xm dmesg!
> > > > >>>>>>>>
> > > > >>>>>>>> Below is the output from dmesg (native kernel) and
> > > > >>>>
> > > > >>>> Dom0's .config.
> > > > >>>>
> > > > >>>>>>>> Anything else do you need?
> > > > >>>>>>>
> > > > >>>>>>> Can you get a serial line on the machine?
> > > > >>>>>>
> > > > >>>>>> Opps, that is compicated, as I dont have a cable to do that.
> > > > >>>>>>
> > > > >>>>>> So if you have no suggestion, perhaps I must try this
> > > > >>>>
> > > > >>>> way. But perhaps
> > > > >>>>
> > > > >>>>>> it take more than a week, as I am away in few days.
> > > > >>>>>
> > > > >>>>> There's a decent chance that comparing the two dmesg
> > > > >>>>
> > > > >>>> outputs will show some
> > > > >>>>
> > > > >>>>> important deviation in the case of running on Xen that is
> > > > >>>>
> > > > >>>> causing the boot
> > > > >>>>
> > > > >>>>> failure. Without the failing output it's hard to know
> > > >
> > > > where to start
> > > >
> > > > >>>>> looking.
> > > > >>>>
> > > > >>>> I see, but can you imagine some reasons why that
> > > >
> > > > happens?  It makes
> > > >
> > > > >>>> absolute no sense to me.
> > > > >>>
> > > > >>> There are lots of possible reasons. The most likely is
> > > >
> > > > that your kernel
> > > >
> > > > >>> in the native has drivers that are not part of the Xen default
> > > > >>> configuration.
> > > > >>>
> > > > >>> The other very common problem is that you don't have
> > > >
> > > > those necessary
> > > >
> > > > >>> drivers in the "initrd" for your Xen. This is a problem
> > > >
> > > > that is posted
> > > >
> > > > >>> about three times a week (at least) on the Xen Users
> > > >
> > > > mailing list [where
> > > >
> > > > >>> this problem probably should be discussed - but I think since it's
> > > > >>> started here, we'll keep it here].
> > > > >>
> > > > >> No, that is not a reason in my case. I did it this way:
> > > > >> - Native kernel (2.6.18) is compiled with all the necessary drivers
> > > > >> built-in. That means I dont need initrd to boot my machine
> > > >
> > > > with this
> > > >
> > > > >> kernel. And it boots well.
> > > > >> - I copied the .config of native kernel above to Dom0, and compile
> > > > >> Dom0 with this option. (Of course before compiling, I enabled Xen
> > > > >> option, as you can see in the .config of Dom0 I sent in the last
> > > > >> mail). Again this time I dont need initrd.
> > > > >>
> > > > >> So it is logical that Dom0 must boot, but it fails
> > > >
> > > > actually. That is
> > > >
> > > > >> why I find the situation very strange.
> > > > >>
> > > > >>>> I have found that my machine has no serial port, so
> > > >
> > > > perhaps I must buy
> > > >
> > > > >>>> a serial card to debug this problem. Wonder if there is
> > > >
> > > > another way to
> > > >
> > > > >>>> avoid that (?)
> > > > >>>
> > > > >>> If you have a digital camera and you add "noreboot" to
> > > >
> > > > the commandline
> > > >
> > > > >>> of "xen.gz" in your grub configuration, maybe you can
> > > >
> > > > upload (to some
> > > >
> > > > >>> photo-web-site or such) a screen-shot of the final few
> > > >
> > > > lines of the boot
> > > >
> > > > >>> and send a link to the list - that may not give all
> > > >
> > > > clues, but at least
> > > >
> > > > >>> it will indicate what's going on.
> > > > >>
> > > > >> OK, I will do that, as it is not desired to buy a serial card :-)
> > > > >>
> > > > >> Thanks,
> > > > >> Jun
> >
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-devel
>
>
>
> --
> Dave: Just a question. What use is a unicyle with no seat?  And no pedals!
> Mark: To answer a question with a question: What use is a skateboard?
> Dave: Skateboards have wheels.
> Mark: My wheel has a wheel!
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel
--
---
pradeep singh rautela

"Genius is 1% inspiration, and 99% perspiration" - not me :)

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