On 01/24/14 09:58, Konrad Rzeszutek Wilk wrote:
> On Thu, Jan 23, 2014 at 05:03:39PM -0500, Don Slutz wrote:
>> On 01/20/14 18:35, Konrad Rzeszutek Wilk wrote:
>>> Don Slutz <dslutz@verizon.com> wrote:
>> [snip]
>>
>>>> WARNING: g.e. still in use!
>>>> WARNING: g.e. still in use!
>>>> WARNING: g.e. still in use!
>>>> pm_op(): platform_pm_resume+0x0/0x50 returns -19
>>>> PM: Device i8042 failed to resume: error -19
>>>> INFO: task sadc:22164 blocked for more then 120 seconds.
>>>> "echo 0 >..."
>>>> INFO: task sadc:22164 blocked for more then 120 seconds.
>>>>
>>>> [root@dcs-xen-54 ~]# xl des 17
>>>> [root@dcs-xen-54 ~]# xl restore -V
>>>> /big/xl-save/centos-6.4-x86_64.0.save
>>>>
>>>>
>>>> Not sure if this is expected or not.
>>> I think Ian saw this with the 'fast-cancel' something resume but I might be incorrect. Did it work if you used xend (you might have to configure it be enabled)?
>> I have not used xend/xe in a long time.  I did need to configure it.
>>
>> Does not start:
>>
>>
>> # /etc/init.d/xend start
>> WARNING: Enabling the xend toolstack.
>> xend is deprecated and scheduled for removal. Please migrate
>> to another toolstack ASAP.
>> Traceback (most recent call last):
>>    File "/usr/sbin/xend", line 110, in <module>
>>      sys.exit(main())
>>    File "/usr/sbin/xend", line 91, in main
>>      start_blktapctrl()
>>    File "/usr/sbin/xend", line 77, in start_blktapctrl
>>      start_daemon("blktapctrl", "")
>>    File "/usr/sbin/xend", line 74, in start_daemon
>>      os.execvp(daemon, (daemon,) + args)
>>    File "/usr/lib64/python2.7/os.py", line 344, in execvp
>>      _execvpe(file, args)
>>    File "/usr/lib64/python2.7/os.py", line 380, in _execvpe
>>      func(fullname, *argrest)
>> OSError: [Errno 2] No such file or directory
>>
>>
>> How important is it to try this?
> It tells us whether the issue is indeed with the 'fast-cancel' thing.
>
> But, I do recall seeing a patch from Ian Jackson for this - I just
> don't remember what it was called - it was posted here and perhaps
> applying it would help?

I have not found a patch.  The bug #30:


http://bugs.xenproject.org/xen/bug/30

Looks to me like the issue I am seeing.  The Guest I was testing this on is an old kernel (as far as this bug) and so I would expect it might be related.


Here is what I see that may link it to this:

    *From*: Ian Campbell <Ian.Campbell@citrix.com>
    *To*: Ian Jackson <Ian.Jackson@eu.citrix.com>
    *Cc*: xen-devel@lists.xen.org
    *Subject*: Re: [Xen-devel] 3.4.70+ kernel WARNING spew dysfunction on failed migration
    *Date*: Fri, 10 Jan 2014 10:26:31 +0000

...

    Looks like RHEL4 (linux-2.6.9-89.0.16.EL kernel) doesn't have the
    support for the new mode at all.

    It would probably be wise to validate this under xend before chasing
    red-herrings with xl.

    Ian.


So I will continue the fight to get xend running.

    -Don





>>      -Don Slutz
>>