Re: [win-pv-devel] Windows server 2012 R2 domUs problem after save/restore

[Fabio Fantoni <fabio.fantoni@xxxxxxx>]

Il 02/02/2015 17:23, Paul Durrant ha scritto:
> > -----Original Message-----
> > From: Fabio Fantoni [mailto:fabio.fantoni@xxxxxxx]
> > Sent: 02 February 2015 14:55
> > To: Paul Durrant
> > Cc: win-pv-devel@xxxxxxxxxxxxxxxxxxxx
> > Subject: Re: [win-pv-devel] Windows server 2012 R2 domUs problem after
> > save/restore
> >
> > Il 02/02/2015 12:37, Paul Durrant ha scritto:
> > > > -----Original Message-----
> > > > From: Fabio Fantoni [mailto:fabio.fantoni@xxxxxxx]
> > > > Sent: 02 February 2015 11:32
> > > > To: Paul Durrant
> > > > Cc: win-pv-devel@xxxxxxxxxxxxxxxxxxxx
> > > > Subject: Re: [win-pv-devel] Windows server 2012 R2 domUs problem
> > after
> > > > save/restore
> > > >
> > > > Il 30/01/2015 19:04, Paul Durrant ha scritto:
> > > > > > -----Original Message-----
> > > > > > From: Fabio Fantoni [mailto:fabio.fantoni@xxxxxxx]
> > > > > > Sent: 30 January 2015 15:45
> > > > > > To: Paul Durrant
> > > > > > Cc: win-pv-devel@xxxxxxxxxxxxxxxxxxxx
> > > > > > Subject: Re: [win-pv-devel] Windows server 2012 R2 domUs problem
> > > > after
> > > > > > save/restore
> > > > > >
> > > > > > Il 30/01/2015 16:31, Paul Durrant ha scritto:
> > > > > > > > -----Original Message-----
> > > > > > > > From: Fabio Fantoni [mailto:fabio.fantoni@xxxxxxx]
> > > > > > > > Sent: 30 January 2015 15:14
> > > > > > > > To: Paul Durrant; win-pv-devel@xxxxxxxxxxxxxxxxxxxx
> > > > > > > > Subject: Re: [win-pv-devel] Windows server 2012 R2 domUs
> > problem
> > > > > > after
> > > > > > > > save/restore
> > > > > > > >
> > > > > > > > Il 30/01/2015 16:07, Paul Durrant ha scritto:
> > > > > > > > > > -----Original Message-----
> > > > > > > > > > From: win-pv-devel-bounces@xxxxxxxxxxxxxxxxxxxx [mailto:win-
> > pv-
> > > > > > devel-
> > > > > > > > > > bounces@xxxxxxxxxxxxxxxxxxxx] On Behalf Of Fabio Fantoni
> > > > > > > > > > Sent: 30 January 2015 14:42
> > > > > > > > > > To: Paul Durrant; win-pv-devel@xxxxxxxxxxxxxxxxxxxx
> > > > > > > > > > Subject: Re: [win-pv-devel] Windows server 2012 R2 domUs
> > > > problem
> > > > > > > > after
> > > > > > > > > > save/restore
> > > > > > > > > >
> > > > > > > > > > Il 30/01/2015 15:31, Paul Durrant ha scritto:
> > > > > > > > > > > > -----Original Message-----
> > > > > > > > > > > > From: win-pv-devel-bounces@xxxxxxxxxxxxxxxxxxxx [mailto:win-
> > > > pv-
> > > > > > > > devel-
> > > > > > > > > > > > bounces@xxxxxxxxxxxxxxxxxxxx] On Behalf Of Fabio Fantoni
> > > > > > > > > > > > Sent: 30 January 2015 14:17
> > > > > > > > > > > > To: Paul Durrant; win-pv-devel@xxxxxxxxxxxxxxxxxxxx
> > > > > > > > > > > > Subject: Re: [win-pv-devel] Windows server 2012 R2 domUs
> > > > > > problem
> > > > > > > > > > after
> > > > > > > > > > > > save/restore
> > > > > > > > > > > >
> > > > > > > > > > > > Il 28/01/2015 21:14, Paul Durrant ha scritto:
> > > > > > > > > > > > > > -----Original Message-----
> > > > > > > > > > > > > > From: Fabio Fantoni [mailto:fabio.fantoni@xxxxxxx]
> > > > > > > > > > > > > > Sent: 28 January 2015 09:19
> > > > > > > > > > > > > > To: Paul Durrant; win-pv-devel@xxxxxxxxxxxxxxxxxxxx
> > > > > > > > > > > > > > Subject: Re: [win-pv-devel] Windows server 2012 R2 domUs
> > > > > > > > problem
> > > > > > > > > > > > after
> > > > > > > > > > > > > > save/restore
> > > > > > > > > > > > > >
> > > > > > > > > > > > > > Il 22/01/2015 16:00, Paul Durrant ha scritto:
> > > > > > > > > > > > > > > > -----Original Message-----
> > > > > > > > > > > > > > > > From: win-pv-devel-bounces@xxxxxxxxxxxxxxxxxxxx
> > > > [mailto:win-
> > > > > > > > pv-
> > > > > > > > > > > > devel-
> > > > > > > > > > > > > > > > bounces@xxxxxxxxxxxxxxxxxxxx] On Behalf Of Fabio Fantoni
> > > > > > > > > > > > > > > > Sent: 22 January 2015 10:10
> > > > > > > > > > > > > > > > To: win-pv-devel@xxxxxxxxxxxxxxxxxxxx
> > > > > > > > > > > > > > > > Cc: Paul Durrant
> > > > > > > > > > > > > > > > Subject: Re: [win-pv-devel] Windows server 2012 R2
> > domUs
> > > > > > > > > > problem
> > > > > > > > > > > > > > after
> > > > > > > > > > > > > > > > save/restore
> > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > Il 19/01/2015 16:30, Fabio Fantoni ha scritto:
> > > > > > > > > > > > > > > > > Hi, I installed winpv driver build of 15 january on
> > Windows
> > > > > > server
> > > > > > > > > > > > > > > > > 2012 R2 standard 64 bit and have problem after
> > > > save/restore.
> > > > > > > > > > > > > > > > > xl save/restore didn't show any errors, trying to
> > connected
> > > > > > with
> > > > > > > > rdp
> > > > > > > > > > I
> > > > > > > > > > > > > > > > > was unable and with spice I saw screen with data and
> > time
> > > > > > (time
> > > > > > > > > > > > update
> > > > > > > > > > > > > > > > > after restore) but doing ctrl+alt+canc it changed
> > something
> > > > in
> > > > > > > > > > screen
> > > > > > > > > > > > > > > > > only after 5-10 minutes and still without showing login
> > field.
> > > > > > > > > > > > > > > > > Dom0 is Wheezy with kernel 3.16.7-ckt2-1~bpo70+1
> > (from
> > > > > > > > official
> > > > > > > > > > > > > > > > > backport), build of xen based on start of 4.4.2-pre and
> > > > qemu
> > > > > > 1.6
> > > > > > > > > > from
> > > > > > > > > > > > > > > > > xen build.
> > > > > > > > > > > > > > > > > DomU xl cfg:
> > > > > > > > > > > > > > > > > > name='w2012r2-01'
> > > > > > > > > > > > > > > > > > builder="hvm"
> > > > > > > > > > > > > > > > > > memory=8192
> > > > > > > > > > > > > > > > > > vcpus=4
> > > > > > > > > > > > > > > > > > acpi_s3=0
> > > > > > > > > > > > > > > > > > acpi_s4=0
> > vif=['bridge=xenbr2,mac=00:16:3e:24:b7:d7','bridge=xenbr10,mac=00:16:3e:
> > > > > > > > > > > > > > > > 18:2a:f2,script=vif-openvswitch']
> > > > #vfb=['vnc=1,vncunused=1,vnclisten="0.0.0.0",keymap=it']
> > > > > > > > > > > > > > > > > > disk=['/mnt/vm/disks/w2012r2-
> > > > > > > > > > > > > > > > 01.disk1.xm,raw,hda,rw',',raw,hdb,ro,cdrom']
> > > > > > > > > > > > > > > > > > boot='dc'
> > > > > > > > > > > > > > > > > > device_model_version="qemu-xen"
> > > > > > > > > > > > > > > > > > viridian=1
> > > > > > > > > > > > > > > > > > vnc=0
> > > > > > > > > > > > > > > > > > keymap="it"
> > > > > > > > > > > > > > > > > > on_crash="destroy"
> > > > > > > > > > > > > > > > > > vga="stdvga"
> > > > > > > > > > > > > > > > > > spice=1
> > > > > > > > > > > > > > > > > > spicehost='0.0.0.0'
> > > > > > > > > > > > > > > > > > spiceport=6000
> > > > > > > > > > > > > > > > > > spicepasswd="test"
> > > > > > > > > > > > > > > > > > spicevdagent=1
> > > > > > > > > > > > > > > > > > spice_clipboard_sharing=0
> > > > > > > > > > > > > > > > > > spiceusbredirection=4
> > > > > > > > > > > > > > > > > > soundhw="hda"
> > > > > > > > > > > > > > > > > > localtime=1
> > > > > > > > > > > > > > > > > I added in attachments qemu logs (before and after
> > > > > > > > save/restore)
> > > > > > > > > > > > with
> > > > > > > > > > > > > > > > > xen trace enabled.
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > If you need more informations tests tell me and I'll post
> > > > them.
> > > > > > > > > > > > > > > > > I have also another small question:
> > > > > > > > > > > > > > > > > is ms_vm_genid needed for this case? for what I
> > > > understand
> > > > > > is
> > > > > > > > only
> > > > > > > > > > > > for
> > > > > > > > > > > > > > > > > active directory controller and this it isn't.
> > > > > > > > > > > > > > > > >
> > > > > > > > > > > > > > > > > Thanks for any reply and sorry for my bad english.
> > > > > > > > > > > > > > > > I also tried to uninstall the pv drivers from control panel
> > but
> > > > > > > > windows
> > > > > > > > > > > > > > > > crash, minidump in attachments.
> > > > > > > > > > > > > > > I'm re-working the FIFO event channel code at the moment
> > so
> > > > I'll
> > > > > > > > run
> > > > > > > > > > a
> > > > > > > > > > > > > > quick suspend/resume test when I'm done.
> > > > > > > > > > > > > > >           Paul
> > > > > > > > > > > > > > Thanks for your reply.
> > > > > > > > > > > > > > I did other tests and seems that save/restore problems with
> > > > > > > > windows
> > > > > > > > > > > > 2012
> > > > > > > > > > > > > > was for missed ms_vm_genid="generate" even if clean for
> > > > now
> > > > > > (no
> > > > > > > > > > active
> > > > > > > > > > > > > > directory or other server services enabled nor domain
> > > > member).
> > > > > > > > > > > > > > Remain windows crash on winpv drivers uninstall with
> > > > minidump
> > > > > > > > refer
> > > > > > > > > > to
> > > > > > > > > > > > > > xenvif and other important and occasional problem:
> > > > > > > > > > > > > > network not working after some time and after 2-3 minutes
> > all
> > > > > > > > > > windows
> > > > > > > > > > > > > > become unusable.
> > > > > > > > > > > > > > I hope these problem will be solved by new network pv
> > driver
> > > > > > > > patches,
> > > > > > > > > > > > > > I'll test them ASAP when build with them will be ready.
> > > > > > > > > > > > > I pushed my big series into xenbus today. You should
> > definitely
> > > > > > take
> > > > > > > > > > that; it
> > > > > > > > > > > > fixes several bugs in FIFO event channels and a couple of other
> > > > > > things.
> > > > > > > > > > > > >          Paul
> > > > > > > > > > > > Thanks.
> > > > > > > > > > > > I tested now new pv drivers build on a windows 7 64 bit domU.
> > > > > > > > > > > > On update I saw a strange thing, xenvif and xennet even if
> > > > updated
> > > > > > > > > > > > showed message "Ready to use" instead "Driver updated".
> > > > > > > > > > > > After update of all drivers components I rebooted windows but
> > it
> > > > > > didn't
> > > > > > > > > > > > start, stay blocked on windows logo, seems there is a critical
> > > > > > > > > > > > regression in latest pv drivers build :(
> > > > > > > > > > > > DomU's qemu log with xen-platform trace in attachment.
> > > > > > > > > > > I don't see either XENVIF or XENNET loading at all so perhaps the
> > > > > > > > problem is
> > > > > > > > > > with PV storage and Windows is unable to load the drivers? Does
> > this
> > > > > > > > happen
> > > > > > > > > > if you fresh-install a VM? I tested on Win7 64 and didn't see any
> > > > > > problem,
> > > > > > > > but
> > > > > > > > > > it was a fresh VM in my case.
> > > > > > > > > > >         Paul
> > > > > > > > > > Is a windows 7 with only few things installed that I use for new
> > xen
> > > > and
> > > > > > > > > > pv drivers testing only.
> > > > > > > > > > There was installed previous official builds from here:
> > > > > > > > > > http://xenproject.org/downloads/windows-pv-drivers.html
> > > > > > > > > > Previous update was 2-3 weeks ago and reboot was succesfull,
> > > > update
> > > > > > of
> > > > > > > > > > today not.
> > > > > > > > > > I didn't have installed/updated any other software in this domU
> > > > > > between
> > > > > > > > > > the latest 2 pv driver updates.
> > > > > > > > > Ah, I wonder if I've unwittingly introduced a dependency on the
> > per-
> > > > vpu
> > > > > > > > event channel callback patch into Xen. I did my testing with that in
> > > > place.
> > > > > > I'll
> > > > > > > > try running on 4.5.
> > > > > > > > >        Paul
> > > > > > > > My actual testing dom0 where I tested the new pv drivers is xen
> > 4.5.0
> > > > > > > > with some patches:
> > > > > > > > https://github.com/Fantu/Xen/commits/rebase/m2r-testing
> > > > > > > > Including backports of this 2 patches:
> > > > > > > > x86/hvm: add per-vcpu evtchn upcalls
> > > > > > > > x86/hvm: extend HVM cpuid leaf with vcpu id
> > > > > > > In that case I can't really think of anything. As I said, it worked for me
> > > > when
> > > > > > I tested it all. I'll give it another try just to make sure.
> > > > > > >       Paul
> > > > > > I restored the domUs from backup of 10 days ago, when was working,
> > > > after
> > > > > > backup I didn't install anythings until today when I installed latest pv
> > > > > > drivers build and windows was unable to boot after reboot.
> > > > > > Screenshoot of software installed in attachments.
> > > > > I think I found your problem,. I just posted a small patch to the list and
> > > > pushed it immediately to kick off a new build.
> > > > >      Paul
> > > > Thanks!
> > > > I tested now the update on 2 different domUs and the critical boot
> > > > problem is solved.
> > > >
> > > > I did many other tests, there is still a bug in xenvif and/or xennet:
> > > > after their update I still got the message "Ready to use" instead
> > > > "Device updated".
> > > > After uninstalling all pv drivers and rebooting, the network doesn't
> > > > work even if Windows sees the emulated network card (however before
> > > > installing the pv drivers it was usable). I tried also the uninstall on
> > > > other domU with a pv drivers build of one month ago and it did the same
> > > > thing, so it doesn't seem to be a recent regression. Can you take a look
> > > > at it when you have time?
> > > Yes, I'll try an upgrade install and see if I can see that behaviour. It's odd
> > that networking would not work if the emulated device is present... that
> > sounds more like it could be a configuration/backend issue.
> > > > There is also another minor strange thing: in "control center->programs"
> > > > after drivers update it keeps all pv drivers builds instead of only the
> > > > latest, as you can see in the screenshot of my previous mail. Is it normal?
> > > Yes, that's normal. Windows will keep old installations around.
> > >
> > >     Paul
> > >
> > > > Thanks for any reply and sorry for my bad english.
> > This morning I tried only on windows 7 domUs, now I tried update on
> > windows 2012 r2 64 bit and seems that windows is crashed on xenvif update.
> > And now fail to boot always, in attachment qemu log with xen-platform
> > trace including information about the problem.
> > If you need more informations/tests tell me and I'll post them.
> You got a 0x7B which means you don't have a boot device. This appears to be 
> because XENFILT is unplugging the emulated disk but you don't have XENVBD 
> installed. Do you have the log of the original xenvif crash?
>
>    Paul
Thanks for reply.
Pv drivers was already installed, I updated xenbus correctly and after 
updating xenvif was crashed.
Probably tomorrow I'll try update on other domU with trace enabled.

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