[Qemu-devel] Win2K8 32-bit Mix of IDE and SCSI assertion

[Qemu-devel] Win2K8 32-bit Mix of IDE and SCSI assertion

[Peter Lieven]

Hi,

we today saw a Win2k8 VM with first device IDE and second device SCSI crash reprocably during boot.
Win2k8 32-bit Server was installed with IDE only. The second SCSI device was added later.

Here is the output and commandline:

Aug  5 20:42:55 172.21.59.142 exec: /usr/bin/qemu-kvm-0.12.4  -net tap,vlan=726,script=no,downscript=no,ifname=tap0 -net nic,vlan=726,model=rtl8139,macaddr=52:54:00:fe:00:bf   -drive format=host_device,file=/dev/mapper/iqn.2001-05.com.equallogic:0-8a0906-e4ce1ab04-3ce7a1250354c545-p01-w2k8,if=ide,boot=on,cache=none,aio=native  -drive format=host_device,file=/dev/mapper/iqn.2001-05.com.equallogic:0-8a0906-319e1ab04-39a7a1250204c503-test2,if=scsi,boot=off,cache=none,aio=native  -m 4096 -smp 4 -monitor tcp:0:4001,server,nowait -vnc :1 -name 'W2K8-01'  -boot order=dc,menu=off  -k de  -pidfile /var/run/qemu/vm-200.pid  -mem-path /hugepages -mem-prealloc  -cpu qemu64,model_id='Intel(R) Xeon(R) CPU           L5640  @ 2.27GHz',-nx  -rtc base=localtime,clock=vm -vga cirrus  -usb -usbdevice tablet 
Aug  5 20:43:06 172.21.59.142 kvm: lsi_scsi: error: Unhandled writeb 0xff = 0x0
Aug  5 20:43:06 172.21.59.142 kvm: lsi_scsi: error: Unhandled writeb 0x100 = 0x0
Aug  5 20:43:06 172.21.59.142 kvm: lsi_scsi: error: Unhandled writeb 0x101 = 0x0
Aug  5 20:43:06 172.21.59.142 kvm: lsi_scsi: error: Unhandled writeb 0x102 = 0x0
Aug  5 20:43:06 172.21.59.142 kvm: qemu-kvm-0.12.4: /usr/src/qemu-kvm-0.12.4/hw/lsi53c895a.c:512: lsi_do_dma: Assertion `s->current' failed.
Aug  5 20:43:06 172.21.59.142 kvm: Aborted
Aug  5 20:43:06 172.21.59.142 kvm errno=134

Any ideas?

Best Regards,
Peter

[Qemu-devel] Re: Win2K8 32-bit Mix of IDE and SCSI assertion

[Gerd Hoffmann]

On 08/05/10 22:58, Peter Lieven wrote:
> Hi,
>
> we today saw a Win2k8 VM with first device IDE and second device SCSI crash reprocably during boot.
> Win2k8 32-bit Server was installed with IDE only. The second SCSI device was added later.
>
> Here is the output and commandline:
>
> Aug  5 20:42:55 172.21.59.142 exec: /usr/bin/qemu-kvm-0.12.4  -net tap,vlan=726,script=no,downscript=no,ifname=tap0 -net nic,vlan=726,model=rtl8139,macaddr=52:54:00:fe:00:bf   -drive format=host_device,file=/dev/mapper/iqn.2001-05.com.equallogic:0-8a0906-e4ce1ab04-3ce7a1250354c545-p01-w2k8,if=ide,boot=on,cache=none,aio=native  -drive format=host_device,file=/dev/mapper/iqn.2001-05.com.equallogic:0-8a0906-319e1ab04-39a7a1250204c503-test2,if=scsi,boot=off,cache=none,aio=native  -m 4096 -smp 4 -monitor tcp:0:4001,server,nowait -vnc :1 -name 'W2K8-01'  -boot order=dc,menu=off  -k de  -pidfile /var/run/qemu/vm-200.pid  -mem-path /hugepages -mem-prealloc  -cpu qemu64,model_id='Intel(R) Xeon(R) CPU           L5640  @ 2.27GHz',-nx  -rtc base=localtime,clock=vm -vga cirrus  -usb -usbdevice tablet
> Aug  5 20:43:06 172.21.59.142 kvm: lsi_scsi: error: Unhandled writeb 0xff = 0x0
> Aug  5 20:43:06 172.21.59.142 kvm: lsi_scsi: error: Unhandled writeb 0x100 = 0x0
> Aug  5 20:43:06 172.21.59.142 kvm: lsi_scsi: error: Unhandled writeb 0x101 = 0x0
> Aug  5 20:43:06 172.21.59.142 kvm: lsi_scsi: error: Unhandled writeb 0x102 = 0x0
> Aug  5 20:43:06 172.21.59.142 kvm: qemu-kvm-0.12.4: /usr/src/qemu-kvm-0.12.4/hw/lsi53c895a.c:512: lsi_do_dma: Assertion `s->current' failed.
> Aug  5 20:43:06 172.21.59.142 kvm: Aborted
> Aug  5 20:43:06 172.21.59.142 kvm errno=134
>
> Any ideas?

Fixed in master.

http://git.qemu.org/qemu.git/commit/?id=d1d74664ea99cdc571afee12e31c8625595765b0

cheers,
   Gerd

Re: [Qemu-devel] Win2K8 32-bit Mix of IDE and SCSI assertion

[Michal Novotny]

On 08/05/2010 10:58 PM, Peter Lieven wrote:
> Hi,
>
> we today saw a Win2k8 VM with first device IDE and second device SCSI crash reprocably during boot.
> Win2k8 32-bit Server was installed with IDE only. The second SCSI device was added later.
>
> Here is the output and commandline:
>
> Aug  5 20:42:55 172.21.59.142 exec: /usr/bin/qemu-kvm-0.12.4  -net tap,vlan=726,script=no,downscript=no,ifname=tap0 -net nic,vlan=726,model=rtl8139,macaddr=52:54:00:fe:00:bf   -drive format=host_device,file=/dev/mapper/iqn.2001-05.com.equallogic:0-8a0906-e4ce1ab04-3ce7a1250354c545-p01-w2k8,if=ide,boot=on,cache=none,aio=native  -drive format=host_device,file=/dev/mapper/iqn.2001-05.com.equallogic:0-8a0906-319e1ab04-39a7a1250204c503-test2,if=scsi,boot=off,cache=none,aio=native  -m 4096 -smp 4 -monitor tcp:0:4001,server,nowait -vnc :1 -name 'W2K8-01'  -boot order=dc,menu=off  -k de  -pidfile /var/run/qemu/vm-200.pid  -mem-path /hugepages -mem-prealloc  -cpu qemu64,model_id='Intel(R) Xeon(R) CPU           L5640  @ 2.27GHz',-nx  -rtc base=localtime,clock=vm -vga cirrus  -usb -usbdevice tablet
> Aug  5 20:43:06 172.21.59.142 kvm: lsi_scsi: error: Unhandled writeb 0xff = 0x0
> Aug  5 20:43:06 172.21.59.142 kvm: lsi_scsi: error: Unhandled writeb 0x100 = 0x0
> Aug  5 20:43:06 172.21.59.142 kvm: lsi_scsi: error: Unhandled writeb 0x101 = 0x0
> Aug  5 20:43:06 172.21.59.142 kvm: lsi_scsi: error: Unhandled writeb 0x102 = 0x0
> Aug  5 20:43:06 172.21.59.142 kvm: qemu-kvm-0.12.4: /usr/src/qemu-kvm-0.12.4/hw/lsi53c895a.c:512: lsi_do_dma: Assertion `s->current' failed.
> Aug  5 20:43:06 172.21.59.142 kvm: Aborted
> Aug  5 20:43:06 172.21.59.142 kvm errno=134
>
> Any ideas?
>
> Best Regards,
> Peter
>
>
>    

Peter, you say you're using Win2K8 32-bit (x86) version (i.e. you don't 
use Win2K8R2 - it doesn't have LSI drivers for lsi53c895a AFAIK) ? I 
don't know but isn't Win2K8 x64 only? Does 32-bit version for this 
system exists? Nevertheless the registers on the log you wrote about 
were somehow problematic on x64 LSI drivers because of bad phase jump 
implementation.

Paolo, I remember we've been studying the LSI SCSI controller code and 
those unhandled writes on registers 0xff, 0x100, 0x101 and 0x102 were 
there for the Windows x64 guests and this was caused by invalid phase 
jump registers not meeting the specs. Nevertheless when I tried to seach 
some information on errno=134 (based on assumption it's a standard OS 
error) I used perror but it returned some kind of MySQL error code:

$ perror 134
MySQL error code 134: Record was already deleted (or record file crashed)
$

I don't know whether installation MySQL can override some codes from 
perror however even googling for the OS Error 134 proved to be 
ineffective. Are you having any ideas ? Is your patch for LSI SCSI 
controller applied in the upstream ?

Thanks,
Michal

-- 
Michal Novotny<minovotn@redhat.com>, RHCE
Virtualization Team (xen userspace), Red Hat

Re: [Qemu-devel] Win2K8 32-bit Mix of IDE and SCSI assertion

[Paolo Bonzini]

On 08/06/2010 01:08 PM, Michal Novotny wrote:
>> Aug 5 20:43:06 172.21.59.142 kvm: Aborted
>> Aug 5 20:43:06 172.21.59.142 kvm errno=134
>
> when I tried to seach some information on errno=134 (based on
> assumption it's a standard OS error)

I don't know where exactly the output is coming from, but in this case 
134 is not really an errno, but a value returned from waitpid.  It 
indicates that kvm exited with SIGABRT (SIGABRT = 6, plus bit 7 is set).

> I used perror but it returned some kind of MySQL error code: $ perror
> 134 MySQL error code 134: Record was already deleted (or record file
> crashed) $

You're confusing the C standard function perror with some random
executable you have on your system:

$ yum whatprovides '*/perror'
mysql-server-5.1.45-2.fc13.x86_64 : The MySQL server and related files
Repo        : fedora
Matched from:
Filename    : /usr/bin/perror

:)

> Is your patch for LSI SCSI controller applied in the upstream ?

Yes, Gerd already pointed to it.

Paolo

Re: [Qemu-devel] Win2K8 32-bit Mix of IDE and SCSI assertion

[Michal Novotny]

On 08/06/2010 01:17 PM, Paolo Bonzini wrote:
> On 08/06/2010 01:08 PM, Michal Novotny wrote:
>>> Aug 5 20:43:06 172.21.59.142 kvm: Aborted
>>> Aug 5 20:43:06 172.21.59.142 kvm errno=134
>>
>> when I tried to seach some information on errno=134 (based on
>> assumption it's a standard OS error)
>
> I don't know where exactly the output is coming from, but in this case 
> 134 is not really an errno, but a value returned from waitpid.  It 
> indicates that kvm exited with SIGABRT (SIGABRT = 6, plus bit 7 is set).
>

Well then, this could be the thing.

>> I used perror but it returned some kind of MySQL error code: $ perror
>> 134 MySQL error code 134: Record was already deleted (or record file
>> crashed) $
>
> You're confusing the C standard function perror with some random
> executable you have on your system:
>
> $ yum whatprovides '*/perror'
> mysql-server-5.1.45-2.fc13.x86_64 : The MySQL server and related files
> Repo        : fedora
> Matched from:
> Filename    : /usr/bin/perror
>
> :)

Yeah, you're right. It's accessing this file nevertheless the reason I 
confused it was that when I put the argument of some known error code 
for OS, it's returning the OS error but when it's not known it's 
returning the MySQL error.

I wrote a small program to confirm it. It has this line: printf("err 
134: %s\n", strerror(134)); and when I run this program it's returning:

$./ax
err 134: Unknown error 134
$

so that's why I got confused, sorry.
>
>> Is your patch for LSI SCSI controller applied in the upstream ?
>
> Yes, Gerd already pointed to it.
>
> Paolo

Well then, then if the patch is applied I don't know what else could 
caused it since those registers were really closely connected to the 
invalid phase jumps.

Michal

-- 
Michal Novotny<minovotn@redhat.com>, RHCE
Virtualization Team (xen userspace), Red Hat

Re: [Qemu-devel] Win2K8 32-bit Mix of IDE and SCSI assertion

[Michal Novotny]

On 08/06/2010 04:37 PM, Peter Lieven wrote:
> ...
> hi all, the error was with qemu 0.12.4. i looked at 0.12.5 changelog, but did not find any scsi related changes after 0.12.4.
> the guest that caused the problem was win2k8 server 64-bit. i applied the patch gerd pointed to and this fixed the issue.
>
> thanks to all,
> peter
>
>
>    

Hi Peter,
I got a little confused since you wrote something about Win2K8 32-bit so 
I didn't know whether you were referring to 32-bit guest or 64-bit one. 
The patch is necessary for x64 version of LSI SCSI drivers since it 
fixes the phase mismatch implementations. Linux doesn't have those 
issues since the jump registers 1 and 2 are the same. This was also true 
for 32-bit versions of Windows nevertheless Microsoft seems to change 
this to match specs in the x64 version of those LSI SCSI drivers. But 
it's great to hear it's working fine and this is not any other issue ;)

Regards,
Michal

-- 
Michal Novotny<minovotn@redhat.com>, RHCE
Virtualization Team (xen userspace), Red Hat

Re: [Qemu-devel] Win2K8 32-bit Mix of IDE and SCSI assertion

[Peter Lieven]

Am 06.08.2010 um 13:30 schrieb Michal Novotny:

> On 08/06/2010 01:17 PM, Paolo Bonzini wrote:
>> On 08/06/2010 01:08 PM, Michal Novotny wrote:
>>>> Aug 5 20:43:06 172.21.59.142 kvm: Aborted
>>>> Aug 5 20:43:06 172.21.59.142 kvm errno=134
>>> 
>>> when I tried to seach some information on errno=134 (based on
>>> assumption it's a standard OS error)
>> 
>> I don't know where exactly the output is coming from, but in this case 134 is not really an errno, but a value returned from waitpid.  It indicates that kvm exited with SIGABRT (SIGABRT = 6, plus bit 7 is set).
>> 
> 
> Well then, this could be the thing.
> 
>>> I used perror but it returned some kind of MySQL error code: $ perror
>>> 134 MySQL error code 134: Record was already deleted (or record file
>>> crashed) $
>> 
>> You're confusing the C standard function perror with some random
>> executable you have on your system:
>> 
>> $ yum whatprovides '*/perror'
>> mysql-server-5.1.45-2.fc13.x86_64 : The MySQL server and related files
>> Repo        : fedora
>> Matched from:
>> Filename    : /usr/bin/perror
>> 
>> :)
> 
> Yeah, you're right. It's accessing this file nevertheless the reason I confused it was that when I put the argument of some known error code for OS, it's returning the OS error but when it's not known it's returning the MySQL error.
> 
> I wrote a small program to confirm it. It has this line: printf("err 134: %s\n", strerror(134)); and when I run this program it's returning:
> 
> $./ax
> err 134: Unknown error 134
> $
> 
> so that's why I got confused, sorry.
>> 
>>> Is your patch for LSI SCSI controller applied in the upstream ?
>> 
>> Yes, Gerd already pointed to it.
>> 
>> Paolo
> 
> Well then, then if the patch is applied I don't know what else could caused it since those registers were really closely connected to the invalid phase jumps.

hi all, the error was with qemu 0.12.4. i looked at 0.12.5 changelog, but did not find any scsi related changes after 0.12.4. 
the guest that caused the problem was win2k8 server 64-bit. i applied the patch gerd pointed to and this fixed the issue.

thanks to all,
peter


> 
> Michal
> 
> -- 
> Michal Novotny<minovotn@redhat.com>, RHCE
> Virtualization Team (xen userspace), Red Hat
> 
>