[Qemu-devel] Re: KQEMU bus errors

[Qemu-devel] Re: KQEMU bus errors

[Kevin F. Quinn]

I also get the bus error, when trying to install Windows 2000 Professional.
It occurs, as described before, when the install tries to format the drive.
If I build with --disable-kqemu, the bus error does not occur, but when built with kqemu support it occurs whether or not the kernel module is in use.  Once installed (after building with --disable-kqemu), if I then try to run it with the kqemu version (again, with or without the module) it generates a bus error at variable points - geenrally it'll boot, get through the login but die shortly afterwards.

I have the shm device in fstab:

none /dev/shm tmpfs defaults 0 0

as mentioned earlier.

Any suggestions would be appreciated.


Also, I've tried to install SP4, but it doesn't like it.  Could someone give me some hints/tricks on how to track down what the problem is?


(btw using latest cvs at time of writing)

Thanks,
Kev.

Re: [Qemu-devel] Re: KQEMU bus errors

[Phil Krylov]

> I have the shm device in fstab:
> 
> none /dev/shm tmpfs defaults 0 0
> 
> as mentioned earlier.
> 
> Any suggestions would be appreciated.

Your guest memory size (-m option to qemu) should be a little smaller than free
space on /dev/shm (as reported by df command). For example, here
/dev/shm is 256MB, but QEMU crashes if I specify more than 244 MB for
the guest OS.

-- Ph.

Re: [Qemu-devel] Re: KQEMU bus errors

[Kevin F. Quinn]

Phil Krylov (phil.krylov@gmail.com) wrote:

> Your guest memory size (-m option to qemu) should be a little smaller > than free space on /dev/shm (as reported by df command). For example, > here
> /dev/shm is 256MB, but QEMU crashes if I specify more than 244 MB for
> the guest OS.

Ah; thanks.  I had tried -m 126 before (/dev/shm is 128MB) but I guess it needs to be perhaps -m 120.  I did manage to get it working yesterday by doing QEMU_TMPDIR=/tmp qemu <...>, so that it didn't use /dev/shm; presumably that's slower however.

[Qemu-devel] KQEMU bus errors

[Darryl Dixon]

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Hi Fabrice,

    WinXP SP2 guest generates random bus errors during the login process
with kqemu module:
[dixond@localhost machine]$ sudo /opt/src/machine/winxp_boot.sh
Connected to host network interface: tun0
QEMU 0.6.2 monitor - type 'help' for more information
(qemu) /opt/src/machine/winxp_boot.sh: line 2:  6633 Bus error
qemu -hda winxp_hda.img -boot c -enable-audio -nics 1 -m 368 -n qemu-
ifup -monitor stdio -localtime

     Let me know if there is anything I can do to help debug this.

Cheers,
-- 
Darryl Dixon <esrever_otua@pythonhacker.is-a-geek.net>

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Re: [Qemu-devel] KQEMU bus errors

[Julian Chesterfield]

I have the same experience running WinXP, SP2 image over latest CVS build 
of KQemu, however testing with both kernel support enabled and disabled 
seems to produce the same error regardless. Anyone else experiencing this with 
XP images?

- Julian



Darryl Dixon wrote:

> Hi Fabrice,
>
>     WinXP SP2 guest generates random bus errors during the login 
> process with kqemu module:
> [dixond@localhost machine]$ sudo /opt/src/machine/winxp_boot.sh
> Connected to host network interface: tun0
> QEMU 0.6.2 monitor - type 'help' for more information
> (qemu) */opt/src/machine/winxp_boot.sh: line 2:  6633 Bus 
> error               qemu -hda winxp_hda.img -boot c -enable-audio 
> -nics 1 -m 368 -n qemu-ifup -monitor stdio -localtime*
>
>      Let me know if there is anything I can do to help debug this.
>
> Cheers,
> -- 
> Darryl Dixon <esrever_otua@pythonhacker.is-a-geek.net 
> <mailto:esrever_otua@pythonhacker.is-a-geek.net>>
>
>------------------------------------------------------------------------
>
>_______________________________________________
>Qemu-devel mailing list
>Qemu-devel@nongnu.org
>http://lists.nongnu.org/mailman/listinfo/qemu-devel
>  
>

[Qemu-devel] Re: KQEMU bus errors

[bri3d]

> 
> I have the same experience running WinXP, SP2 image over latest CVS build 
> of KQemu, however testing with both kernel support enabled and disabled 
> seems to produce the same error regardless. Anyone else experiencing this with 
> XP images?
> 
> - Julian

Yes.  Just for kicks I tried the XP SP2 installer CD too(XP SP1 CD slipstreamed
to SP2+February 2005 patches, ISO not real CD).  It crashes at the "formatting
disk" step with all disk image types until I make ram less then /dev/shm.  Then
it formats OK.

Re: [Qemu-devel] Re: KQEMU bus errors

[Hetz Ben Hamo]

> Yes.  Just for kicks I tried the XP SP2 installer CD too(XP SP1 CD slipstreamed
> to SP2+February 2005 patches, ISO not real CD).  It crashes at the "formatting
> disk" step with all disk image types until I make ram less then /dev/shm.  Then
> it formats OK.

How do I setup the /dev/shm and with what parameters?

Thanks,
Hetz

Re: [Qemu-devel] Re: KQEMU bus errors

[Darryl Dixon]

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The line from your /etc/fstab should be:

none    /dev/shm    tmpfs    defaults    0 0


Cheers,
D


On Tue, 2005-02-22 at 01:04 +0200, Hetz Ben Hamo wrote:

>> Yes.  Just for kicks I tried the XP SP2 installer CD too(XP SP1 CD slipstreamed
>> to SP2+February 2005 patches, ISO not real CD).  It crashes at the "formatting
>> disk" step with all disk image types until I make ram less then /dev/shm.  Then
>> it formats OK.
>
>How do I setup the /dev/shm and with what parameters?
>
>Thanks,
>Hetz
>
>
>_______________________________________________
>Qemu-devel mailing list
>Qemu-devel@nongnu.org
>http://lists.nongnu.org/mailman/listinfo/qemu-devel

-- 
Darryl Dixon <esrever_otua@pythonhacker.is-a-geek.net>

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