RE: [Xen-users] xen save error

["Cole, Ray" <Ray_Cole@xxxxxxx>]

I can get xen-2.0-testing to fail on live migrations with virtually no load 
about 10% of the time with live migration :-)  Seems it becomes unable to 
suspend the user domain kernel - kernel gets the message, but never gets a 
chance to process it.  I'm not saying 2.0-testing won't resolve the problem 
John is seeing, but I'm not sure I would quite make the statement that it has 
been 'battle tested' :-)

-- Ray

-----Original Message-----
From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx]On Behalf Of Ian Pratt
Sent: Wednesday, September 14, 2005 7:04 AM
To: bryant.johan@xxxxxxxxx
Cc: ian.pratt@xxxxxxxxxxxx; xen-users@xxxxxxxxxxxxxxxxxxx
Subject: RE: [Xen-users] xen save error


The xfrd.log might give you more info. Alternatively you could try
2.0-testing. This has a couple of extra minor fixes and has been battle
tested with many thousands of migrations under load.

Ian 

> -----Original Message-----
> From: john bryant [mailto:bryant.johan@xxxxxxxxx] 
> Sent: 13 September 2005 21:57
> To: Ian Pratt
> Cc: xen-users@xxxxxxxxxxxxxxxxxxx; ian.pratt@xxxxxxxxxxxx
> Subject: Re: [Xen-users] xen save error
> 
> Hi ,
> 
> Upgrading xen to 2.0.7, I am able to save my virtual machines 
> . But restoring virtual machine give me error. Here is my 
> sequence of event :
> 
> xm save 10 test10
> xm restore test10
> Error: errors: transfer daemon (xfrd) error: 22
> 
> xm list does show newly restored domain 
> 
> Name              Id  Mem(MB)  CPU  State  Time(s)  Console
> Domain-0           0       92    0  r----     58.5        
> ttylinux          11      256    0  -b---      0.8    9610
> 
> xm list -l gives following output ( No console information ) 
> . I am not able to go to restored virtual machine.
> 
> (domain
>     (id 0)
>     (name Domain-0)
>     (memory 92)
>     (maxmem -1)
>     (state r----)
>     (cpu 0)
>     (cpu_time 65.475292894)
>     (devices)
> )
> (domain
>     (id 11)
>     (name Domain-11)
>     (memory 255)
>     (maxmem 256)
>     (state -b---)
>     (cpu 0)
>     (cpu_time 0.008907453)
>     (devices)
> 
> XFRD Log for restoration is as follows ( tail -f /var/log/xfrd.log ): 
> 
> Reloading memory pages:   6%
>  12%
>  17%
>  23%
>  28%
>  34%
>  39%
>  45%
>  50%
>  56%
>  62%
>  67%
>  73%
>  78%
>  84%
>  89%
>  95%
>  95%[1126619778.790150] Received all pages
> 
> Received all pages
> 100%
> 
> 100%
> [1126619778.808769] Memory reloaded.
> 
> Memory reloaded.
> Decreased reservation by 8 pages
> [1126619778.810456] Domain ready to be built.
> 
> Domain ready to be built.
> [1126619778.810637] Domain ready to be unpaused
> 
> Domain ready to be unpaused
> [1126619778.811179] DOM=11
> 
> DOM=11
> 2437 [ERR] XFRD> Error adding op field.
> 2437 [INF] XFRD> Xfr service err=-22
> 
> PLEASE help. 
> 
> Regards,
> John
> 
> 
> 
> On 9/13/05, Ian Pratt <m+Ian.Pratt@xxxxxxxxxxxx> wrote:
> 
>       > I am new to Xen working.  I am not able to save newly created
>       > domain ( Xen 2.0.5) . Following is log of 
> /var/log/xend-debug.log:
>       
>       Please upgrade.
>       Ian
>       
>       
>       
> 
> 
> 

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