OpenBSD geometry disk problem

OpenBSD geometry disk problem

[Magicboiz]

Hello,

I'm trying tu play with OpenBSD into KVM-36, and I find KVM has the same
issue that had VirtualBox: OpenBSD cannot detect the disk geometry due
to a timeout......Check this out:
http://forums.virtualbox.org/viewtopic.php?p=4522


Someone else with the same problem?

Regards






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Re: OpenBSD geometry disk problem

[Izik Eidus]

Magicboiz wrote:
> Hello,
>
> I'm trying tu play with OpenBSD into KVM-36, and I find KVM has the same
> issue that had VirtualBox: OpenBSD cannot detect the disk geometry due
> to a timeout......Check this out:
> http://forums.virtualbox.org/viewtopic.php?p=4522
>
>   
what happen when you run it with --no-kvm?
is it still happen?
> Someone else with the same problem?
>
> Regards
>
>
>
>
>
>
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>   


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Re: OpenBSD geometry disk problem

[Magicboiz]

it works!!!

Great :)

Regards.

El mar, 04-09-2007 a las 05:23 +0300, Izik Eidus escribió:
> Magicboiz wrote:
> > Hello,
> >
> > I'm trying tu play with OpenBSD into KVM-36, and I find KVM has the same
> > issue that had VirtualBox: OpenBSD cannot detect the disk geometry due
> > to a timeout......Check this out:
> > http://forums.virtualbox.org/viewtopic.php?p=4522
> >
> >   
> what happen when you run it with --no-kvm?
> is it still happen?
> > Someone else with the same problem?
> >
> > Regards
> >
> >
> >
> >
> >
> >
> > -------------------------------------------------------------------------
> > This SF.net email is sponsored by: Splunk Inc.
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> > Now Search log events and configuration files using AJAX and a browser.
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> > _______________________________________________
> > kvm-devel mailing list
> > kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
> > https://lists.sourceforge.net/lists/listinfo/kvm-devel
> >   
> 


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Re: OpenBSD geometry disk problem

[Izik Eidus]

Magicboiz wrote:
> it works!!!
>
> Great :)
>
> Regards.
>   
ohh, wait it mean we have bug in kvm!
and runing with --no-kvm mean your guest will run very slow.
please tell us what is the cpu you use, and the exact message you get
plus is it after installtion? in the middle? after boot? while booting?
please give as much information as you can.
thansk


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Re: OpenBSD geometry disk problem

[Magicboiz]

[-- Attachment #1: Type: text/plain, Size: 1091 bytes --]

yes, it runs slowly.....

My config:

CPU: Intel(R) Core(TM)2 CPU         T7200  @ 2.00GHz
Kernel: 2.6.22 (ubuntu  2.6.22-10-generic)
KVM: 36 and 35 tested.

I attach you two screenshots:

	- In the first one, you can see at the bottom, how OpenBSD 4.2 kernel
detects an invalid disk geometry. In fact, the kernel does not detect
nothing, so it supposes that there is a ST506 disk.

	- In the second screenshot, you have kernel messages of timeout while
accessing the disk.



Nothing of this happens with no-kvm flag enabled. I also tried with
no-acpi flag, but with the same results.

Regards,
Javier.



El mié, 05-09-2007 a las 01:38 +0300, Izik Eidus escribió:
> Magicboiz wrote:
> > it works!!!
> >
> > Great :)
> >
> > Regards.
> >   
> ohh, wait it mean we have bug in kvm!
> and runing with --no-kvm mean your guest will run very slow.
> please tell us what is the cpu you use, and the exact message you get
> plus is it after installtion? in the middle? after boot? while booting?
> please give as much information as you can.
> thansk
> 

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Re: OpenBSD geometry disk problem

[Avi Kivity]

Izik Eidus wrote:
> Magicboiz wrote:
>   
>> it works!!!
>>
>> Great :)
>>
>> Regards.
>>   
>>     
> ohh, wait it mean we have bug in kvm!
> and runing with --no-kvm mean your guest will run very slow.
> please tell us what is the cpu you use, and the exact message you get
> plus is it after installtion? in the middle? after boot? while booting?
> please give as much information as you can.
>   

This may be related to the large memory support.  Maybe we are 
overwriting the disk geometry information in nvram.


-- 
Any sufficiently difficult bug is indistinguishable from a feature.


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Re: OpenBSD geometry disk problem

[Izik Eidus]

this bug started at commit 091b206f6c56f2329e11bac2fa40d6f236ab0bc2
and it related to the changes that were made in vmx.c

Laurent, can you help us with this?
(openbsd find the harddisk to be 68mb while it should be 2048mb)

thanks.

Magicboiz wrote:
> Hello,
>
> I'm trying tu play with OpenBSD into KVM-36, and I find KVM has the same
> issue that had VirtualBox: OpenBSD cannot detect the disk geometry due
> to a timeout......Check this out:
> http://forums.virtualbox.org/viewtopic.php?p=4522
>
>
> Someone else with the same problem?
>
> Regards
>
>
>
>
>
>
> -------------------------------------------------------------------------
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> _______________________________________________
> kvm-devel mailing list
> kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
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>   


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Re: OpenBSD geometry disk problem

[Laurent Vivier]

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Izik Eidus wrote:
> this bug started at commit 091b206f6c56f2329e11bac2fa40d6f236ab0bc2
> and it related to the changes that were made in vmx.c
> 
> Laurent, can you help us with this?
> (openbsd find the harddisk to be 68mb while it should be 2048mb)
>

Of course.

Could you provide me the disk image (or how to create one) ?

Laurent
-- 
------------- Laurent.Vivier-6ktuUTfB/bM@public.gmane.org  --------------
          "Software is hard" - Donald Knuth


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Re: OpenBSD geometry disk problem

[Izik Eidus]

Laurent Vivier wrote:
> Izik Eidus wrote:
>   
>> this bug started at commit 091b206f6c56f2329e11bac2fa40d6f236ab0bc2
>> and it related to the changes that were made in vmx.c
>>
>> Laurent, can you help us with this?
>> (openbsd find the harddisk to be 68mb while it should be 2048mb)
>>
>>     
>
> Of course.
>
> Could you provide me the disk image (or how to create one) ?
>   
i just created image of 2giga:
qemu-img create -f qcow disk.img 2G

and ran it with the openbsd41-i386-07-05-06.iso
i searched now in good this seems like link to it:
http://ftp.twaren.net/BSD/OpenBSD/iso/4.1/openbsd41-i386-07-05-06.iso

you dont have to install or to do anything like that, the during the 
boot from the cd.

thanks!
> Laurent
>   


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Re: OpenBSD geometry disk problem

[Carlo Marcelo Arenas Belon]

On Wed, Sep 19, 2007 at 03:49:15PM +0200, Laurent Vivier wrote:
> Izik Eidus wrote:
> > this bug started at commit 091b206f6c56f2329e11bac2fa40d6f236ab0bc2
> > and it related to the changes that were made in vmx.c
> > 
> > Laurent, can you help us with this?
> > (openbsd find the harddisk to be 68mb while it should be 2048mb)

and it only does that when running under kvm, -no-kvm (AKA qemu in emulated
mode) gets it right :

"Intel 82371SB ISA" rev 0x00 at pci0 dev 1 function 0 not configured
pciide0 at pci0 dev 1 function 1 "Intel 82371SB IDE" rev 0x00: DMA, channel 0
wired to compatibility, channel 1 wired to compatibility
wd0 at pciide0 channel 0 drive 0: <QEMU HARDDISK>
wd0: 16-sector PIO, LBA48, 2048MB, 419434 sectors
wd0(pciide0:0:0): using PIO mode 0, DMA mode 2

Carlo

PS. using the last OpenBSD pre4.2 snapshot iso (install42.iso) from
ftp://ftp.openbsd.org/pub/OpenBSD/snapshots/amd64/

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[PATCH] REPN/REPNZ must set rep_prefix to 1 like REP/REPE/REPZ

[Laurent Vivier]

This patch correct the disk probe problem met with OpenBSD.

This issue appears with commit 091b206f6c56f2329e11bac2fa40d6f236ab0bc2
because before it, the decoding was done internally to kvm and after it
is done by x86_emulate.c (which doesn't do it correctly).

Signed-off-by: Laurent Vivier <Laurent.Vivier-6ktuUTfB/bM@public.gmane.org>
---
 drivers/kvm/x86_emulate.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c
index 9e2b27a..f294a49 100644
--- a/drivers/kvm/x86_emulate.c
+++ b/drivers/kvm/x86_emulate.c
@@ -586,11 +586,10 @@ x86_decode_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops)
 		case 0xf0:	/* LOCK */
 			c->lock_prefix = 1;
 			break;
+		case 0xf2:	/* REPNE/REPNZ */
 		case 0xf3:	/* REP/REPE/REPZ */
 			c->rep_prefix = 1;
 			break;
-		case 0xf2:	/* REPNE/REPNZ */
-			break;
 		default:
 			goto done_prefixes;
 		}
-- 
1.5.2.4


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Re: [PATCH] REPN/REPNZ must set rep_prefix to 1 like REP/REPE/REPZ

[Izik Eidus]

Laurent Vivier wrote:
> This patch correct the disk probe problem met with OpenBSD.
>   
thanks.

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Re: [PATCH] REPN/REPNZ must set rep_prefix to 1 like REP/REPE/REPZ

[Avi Kivity]

Laurent Vivier wrote:
> This patch correct the disk probe problem met with OpenBSD.
>
> This issue appears with commit 091b206f6c56f2329e11bac2fa40d6f236ab0bc2
> because before it, the decoding was done internally to kvm and after it
> is done by x86_emulate.c (which doesn't do it correctly).
>
>   

Applied, thanks.

-- 
error compiling committee.c: too many arguments to function


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