[Qemu-devel] Re: KQEMU bus errors

[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
>
>
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>Qemu-devel@nongnu.org
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-- 
Darryl Dixon <esrever_otua@pythonhacker.is-a-geek.net>

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[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.