RE: [Xen-devel] RE: blue screen in windows balloon driver

[MaoXiaoyun <tinnycloud@xxxxxxxxxxx>]

Attached is the three logs for crash.
cp17 & 21 crash on
Assertion failed: srb != NULL
 
thanks.
 
> Subject: RE: [Xen-devel] RE: blue screen in windows balloon driver
> Date: Tue, 1 Mar 2011 23:48:04 +1100
> From: james.harper@xxxxxxxxxxxxxxxx
> To: tinnycloud@xxxxxxxxxxx
> CC: xen-devel@xxxxxxxxxxxxxxxxxxx
>
> I've pushed a possible fix for the reset code for Windows 2000, XP and
> 2003. I haven't fixed the Vista/2008/7/2008R2 storport driver yet.
>
> I'll see what I can do tomorrow to actually test a scsi reset but I
> can't reproduce the problem you are seeing on my system. You'll still
> see the reset messages in the logs which I think simply indicates that
> your system is too loaded to complete the requests in time and Windows
> thinks the scsi bus is hung, but this way it might pick itself up again
> afterwards. On the other hand it may be that too many timeouts and
> resets will cause windows to throw its hands in the air and give up and
> declare the scsi device o ffline, in which case there might not be much
> we can do.
>
> James
>
> > -----Original Message-----
> > From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-devel-
> > bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of James Harper
> > Sent: Tuesday, 1 March 2011 23:36
> > To: MaoXiaoyun
> > Cc: xen devel
> > Subject: [Xen-devel] RE: blue screen in windows balloon driver
> >
> > Hold off on testing. I'm fixing up the reset code so that it does what
> > Windows wants. I'll post something soon if it doesn't take too long.
> >
> > James
> >
> > > -----Original Message-----
> > > From: MaoXiaoyun [mailto:tinnycloud@xxxxxxxxxxx]
> > > Sent: Tuesday, 1 March 2011 23:34
> > > To: James Harper
> > > Cc: xen devel
> > > Subject: RE: blue screen in windows balloon driver
& gt; > >
> > > I will have new driver tested.
> > > Attached is the xentop snapshot.
> > >
> > > thanks.
> > >
> > > > Subject: RE: blue screen in windows balloon driver
> > > > Date: Tue, 1 Mar 2011 23:11:14 +1100
> > > > From: james.harper@xxxxxxxxxxxxxxxx
> > > > To: tinnycloud@xxxxxxxxxxx
> > > >
> > > > >
> > > > > exe attached, thanks.
> > > > >
> > > > > I have three machines, on each sum the *XenVbd_HwScsiResetBus*
> > event.
> > > > > 24 VMS, so
> > > > > grep XenVbd_HwScsiResetBus qemu-dm-w3.MR_cp* | wc -l
> > > > >
> > > > > machine 25: VM easily got crash, the sum is 200
> > > > > machine 23: VM never got crash, the sum is 10
> > > > > machi ne 212: VM never got crash, the sum is 16
> > > > >
> > > > > it seems that machine 25 has much more XenVbd_HwScsiResetBus
> event
> > > > > than other two machines.
> > > > >
> > > > > BTW, when start 24VM concurrently, the starting process is quite
> > slow,
> > > > takes
> > > > > about 20 minutes more to whole started.
> > > > >
> > > > > I commented line 505 in xenpci_pdo.c to avoid timed out.
> > > > >
> > > > > 505 //remaining -= thiswait;
> > > > >
> > > >
> > > > It sounds like you are overloading your disk IO bandwidth. With
> many
> > > > DomU's swapping heavily, Dom0 may simply not be able to keep up
> with
> > the
> > > > IO throughput required resulting in wi ndows thinking that the scsi
> > > > device isn't responding. Can you check xentop and see what sort of
> > IO
> > > > operations per second you are getting?
> > > >
> > > > I have just pushed a change to dump out the in-flight scsi
> requests
> > > > (srb) when HwScsiResetBus is called. Please apply the patch and
> send
> > me
> > > > the next crash.
> > > >
> > > > Thanks
> > > >
> > > > James
> >
> >
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-devel

Attachment: qemu-dm-w3.MR_cp17.vhd.log
Description: Text document

Attachment: qemu-dm-w3.MR_cp21.vhd.log
Description: Text document

Attachment: qemu-dm-w3.MR_cp13.vhd.log
Description: Text document

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