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Re: [win-pv-devel] New windows pv drivers question



Il 24/09/2014 16:03, Paul Durrant ha scritto:
-----Original Message-----
From: Fabio Fantoni [mailto:fabio.fantoni@xxxxxxx]
Sent: 24 September 2014 14:52
To: Paul Durrant
Cc: win-pv-devel@xxxxxxxxxxxxxxxxxxxx
Subject: Re: New windows pv drivers question

Il 24/09/2014 15:19, Paul Durrant ha scritto:
-----Original Message-----
From: Fabio Fantoni [mailto:fabio.fantoni@xxxxxxx]
Sent: 24 September 2014 14:07
To: Paul Durrant
Cc: win-pv-devel@xxxxxxxxxxxxxxxxxxxx
Subject: Re: New windows pv drivers question

Il 24/09/2014 11:15, Paul Durrant ha scritto:
-----Original Message-----
[snip]
Traceback (most recent call last):
      File "C:\Users\Emilio\Desktop\pvdrivers\xenbus\build.py", line
365,
in <module
        build_sln(driver, release, 'x64', debug[sys.argv[1]], vs)
      File "C:\Users\Emilio\Desktop\pvdrivers\xenbus\build.py", line
138,
in build_s
ln
        msbuild(platform, configuration, 'Build', name + '.sln', '', vs)
      File "C:\Users\Emilio\Desktop\pvdrivers\xenbus\build.py", line
122,
in msbuild

        status = shell([bin], dir)
      File "C:\Users\Emilio\Desktop\pvdrivers\xenbus\build.py", line
100,
in shell
        print(line.rstrip())
      File "C:\Python34\lib\encodings\cp850.py", line 19, in encode
        return
codecs.charmap_encode(input,self.errors,encoding_map)[0]
UnicodeEncodeError: 'charmap' codec can't encode character
'\u2026'
in
position
28: character maps to <undefined>
I did something wrong or there is a bug or unexpected case?
Thanks for any reply.
Not seen anything like that before. I can only assume it's to do with
language support. It seems like msbuild is emitting characters that the
shell is
not handling correctly. I suspect you'll be ok if you use an English
character
set but I'll try to figure out what the script is/isn't doing.
      Paul

I installed english language pack and solves the problem.
Ok. So we know what the problem was. We need to figure out a solution
to
that.

Thanks, for now I built with english windows.

After gave me other error about no sufficent permission on one exe of
WDK, I tried to execute as administrator and did max permissions to
everyone on the file but not, I solved also that adding nosdv.
I've seen problems running sdv where some of the processes it kicks off
seem to conflict on one of the log files, so it bails with a lack of write
permission. Is that the sort of thing you saw?

Probably, you need that I retry and post the exactly output of error?

After I had near the end another error where I not found a
workaround:
Done Building Project
"C:\Users\Emilio\Desktop\pvdrivers\xenbus\vs2013\xenbus.sl
n" (Build target(s)).

Build succeeded.
       0 Warning(s)
       0 Error(s)

Time Elapsed 00:00:02.37

C:\Users\Emilio\Desktop\pvdrivers\xenbus\vs2013>if errorlevel 1
goto
error
C:\Users\Emilio\Desktop\pvdrivers\xenbus\vs2013>exit 0
vs2013\Windows7Release\Win32
['"C:\\Program Files (x86)\\Windows
Kits\\8.1\\Debuggers\\x86\\symstore.exe"', '
add', '/s', 'C:\\Symbols', '/r', '/f', '*.pdb', '/t', 'xenbus', '/v',
'8.0.0.12'
]
Finding ID...  0000000015

SYMSTORE: Number of files stored = 3
SYMSTORE: Number of errors = 0
SYMSTORE: Number of files ignored = 0
vs2013\Windows7Release\x64
['"C:\\Program Files (x86)\\Windows
Kits\\8.1\\Debuggers\\x86\\symstore.exe"', '
add', '/s', 'C:\\Symbols', '/r', '/f', '*.pdb', '/t', 'xenbus', '/v',
'8.0.0.12'
]
Finding ID...  0000000016

SYMSTORE: Number of files stored = 3
SYMSTORE: Number of errors = 0
SYMSTORE: Number of files ignored = 0
Traceback (most recent call last):
     File "C:\Users\Emilio\Desktop\pvdrivers\xenbus\build.py", line 375,
in <module
       archive(driver + '\source.tgz', manifest().splitlines(), tgz=True)
     File "C:\Users\Emilio\Desktop\pvdrivers\xenbus\build.py", line 289,
in manifes
t
       sub = subprocess.Popen(cmd, stdout=subprocess.PIPE)
     File "C:\Python34\lib\subprocess.py", line 858, in __init__
       restore_signals, start_new_session)
     File "C:\Python34\lib\subprocess.py", line 1111, in _execute_child
       startupinfo)
FileNotFoundError: [WinError 2] The system cannot find the file
specified
That looks like git is not on your path. The build script adds an archive of
the
source to the output. I should probably just remove that from the script.
I saw that in repository folder\xenbus\(x64|x86) seems there are the
drivers ready, is correct and can be tried?

Yes. They should be good to go.
Installed all 5 drivers in windows 7 pro 64 bit sp1.
On boot now take very long time (much more time that with other
windows
pv or without any) until arrive at login screen, network card is not
visible (show unable to boot both emulated and pv network card).
Testsigning is enabled and the other pv drivers was removed and
rebooted
before install this new.
On same dom0 and domU with other pv drivers (of James Harper) I had
only
these 2 problems:
- occasional network disappaer after some hours or days (probable
xennet
crash)
- 2-3 time of "hang" after restore with qxl vga and vdagent enable

This is the domU's cfg:
name='W7-02'
builder="hvm"
memory=2048
vcpus=2
vif=['bridge=xenbr0,mac=00:16:3e:42:a2:5f']
disk=['/mnt/vm/disks/W7-02.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="qxl"
spice=1
spicehost='0.0.0.0'
spiceport=6003
spicedisable_ticketing=1
spicevdagent=1
spice_clipboard_sharing=0
spiceusbredirection=4
soundhw="hda"
localtime=1
usbversion=2
I tried also disabling qxl, vdagent, audio and usb:
name='W7-02'
builder="hvm"
memory=2048
vcpus=2
vif=['bridge=xenbr0,mac=00:16:3e:42:a2:5f']
disk=['/mnt/vm/disks/W7-02.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=6003
spicedisable_ticketing=1
spicevdagent=0
spice_clipboard_sharing=0
#spiceusbredirection=4
#soundhw="hda"
localtime=1
#usbversion=2
But I had same problems.
Dom0 is wheezy with xen-unstable of some days ago plus some libxl patch
(https://github.com/Fantu/Xen/tree/rebase/m2r-staging) and qemu
2.1.1
Now I'll try also with W8.

If you need more details and/or tests tell me and I'll post them.

If you could enable xen_platform_log in QEMU then the QEMU log should
tell us what's going on. If you don't know how to do that then the way I do it
is to create a file called 'events' under /tmp populated with the single line:
xen_platform_log

and then I add:

device_model_args=[ "-trace", "events=/tmp/events"]

to my config. QEMU by default is built to send traces to stderr, so you
should see the log entries appear in /var/log/xen/qemu-dm-<vm name>.log.
Did you try installing the drivers in a fresh VM? It's possible that there is 
still
some remnant of the GPLPV drivers around - uninstalling drivers on Windows
is tricky.
Thanks for reply.
Tried with trace (log in attachment), with a fast look a saw a strange
mac different from the one setted in cfg.
I tried removing fixed mac in xl cfg but the network card problem persist.
The old pv should be completly removed, I used also the bat for remove
the registry keys and file, not only the unstall from control panel.
I'll try also a clean install ASAP.
Your PV storage looks fine, but the problem with your network is here:

xen_platform_log xen platform: XENVIF|__FrontendWaitForStateChange: fail3
xen_platform_log xen platform: XENVIF|__FrontendWaitForStateChange: fail2
xen_platform_log xen platform: XENVIF|__FrontendWaitForStateChange: fail1 
(c0000001)
xen_platform_log xen platform: XENVIF|__FrontendConnect: fail10
xen_platform_log xen platform: XENVIF|__FrontendConnect: fail9
xen_platform_log xen platform: XENVIF|__FrontendConnect: fail8
xen_platform_log xen platform: XENVIF|__FrontendConnect: fail7
xen_platform_log xen platform: XENVIF|__FrontendConnect: fail6
xen_platform_log xen platform: XENVIF|__FrontendConnect: fail5
xen_platform_log xen platform: XENVIF|__FrontendConnect: fail4
xen_platform_log xen platform: XENVIF|__FrontendConnect: fail3
xen_platform_log xen platform: XENVIF|__FrontendConnect: fail2
xen_platform_log xen platform: XENVIF|__FrontendConnect: fail1 (c0000001)
xen_platform_log xen platform: XENVIF|__PdoD3ToD0: fail1 (c0000001)
xen_platform_log xen platform: XENVIF|PdoD3ToD0: fail2
xen_platform_log xen platform: XENVIF|PdoD3ToD0: fail1 (c0000001)
xen_platform_log xen platform: XENVIF|PdoStartDevice: fail7
xen_platform_log xen platform: XENVIF|PdoStartDevice: fail6
xen_platform_log xen platform: XENVIF|PdoStartDevice: fail5
xen_platform_log xen platform: XENVIF|PdoStartDevice: fail4
xen_platform_log xen platform: XENVIF|PdoStartDevice: fail3
xen_platform_log xen platform: XENVIF|PdoStartDevice: fail2
xen_platform_log xen platform: XENVIF|PdoStartDevice: fail1 (c0000001)

What this means is that your frontend waited for a very very long time for your 
backend to go connected, and it failed to do so. It then  give up and you get 
the above cascade of error logging. I suspect the problem is a lack of the 
following netback fix:

commit 279f438e36c0a70b23b86d2090aeec50155034a9
Author: Paul Durrant <Paul.Durrant@xxxxxxxxxx>
Date:   Tue Sep 17 17:46:08 2013 +0100

     xen-netback: Don't destroy the netdev until the vif is shut down

     Without this patch, if a frontend cycles through states Closing
     and Closed (which Windows frontends need to do) then the netdev
     will be destroyed and requires re-invocation of hotplug scripts
     to restore state before the frontend can move to Connected. Thus
     when udev is not in use the backend gets stuck in InitWait.

     With this patch, the netdev is left alone whilst the backend is
     still online and is only de-registered and freed just prior to
     destroying the vif (which is also nicely symmetrical with the
     netdev allocation and registration being done during probe) so
     no re-invocation of hotplug scripts is required.

     Signed-off-by: Paul Durrant <paul.durrant@xxxxxxxxxx>
     Cc: David Vrabel <david.vrabel@xxxxxxxxxx>
     Cc: Wei Liu <wei.liu2@xxxxxxxxxx>
     Cc: Ian Campbell <ian.campbell@xxxxxxxxxx>
     Acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>
     Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>

I found it applied upstream:
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/commit/?id=279f438e36c0a70b23b86d2090aeec50155034a9
But not in 3.2-stable branch, I tried to apply it on latest Wheezy (debian 7) kernel source but there are too many difference and I was unable to apply it manually.
Can someone give me advices please?

Use kernel from wheezy-backports (3.14+59~bpo70+1) can be a good thing and very reliable? I plain to use new versions also in production ASAP (if I can solve theoccasional network crash on windows I have with gplpv and hope to solve with these drivers), with the agent lite of these drivers should finally solves also the post-restore problem of time(and users unable to login) with the windows domUs in a domain. Now I'll do a fast test with kernel for backports to solves if solves the problem.

Thanks for any reply and sorry for my bad english.


Another thing: I tried also xl shutdown and not works, xeniface is
installed (with dpinst) and liteagent is present windows folder after
it, I must do other thing to have it working?
No, it should be working. Xeniface seems have started ok, so I don't know why 
that's not working.

   Paul


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