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Re: [Xen-users] DomU suspension/hibernation
On 18/06/13 20:36, Joshua Tuttle wrote:
-----Original Message-----
From: Ian Murray [mailto:murrayie@xxxxxxxxxxx]
Sent: Tuesday, June 18, 2013 3:19 PM
To: Joshua Tuttle
Cc: xen-users@xxxxxxxxxxxxx
Subject: Re: [Xen-users] DomU suspension/hibernation
On 18/06/13 19:44, Joshua Tuttle wrote:
-----Original Message-----
From: xen-users-bounces@xxxxxxxxxxxxx
[mailto:xen-users-bounces@xxxxxxxxxxxxx] On Behalf Of Ian Murray
Sent: Tuesday, June 18, 2013 1:56 PM
To: xen-users@xxxxxxxxxxxxx
Subject: Re: [Xen-users] DomU suspension/hibernation
On 18/06/13 16:42, Joshua Tuttle wrote:
-----Original Message-----
From: Ian Campbell [mailto:Ian.Campbell@xxxxxxxxxx]
Sent: Tuesday, June 18, 2013 11:33 AM
To: Joshua Tuttle
Cc: xen-users@xxxxxxxxxxxxx
Subject: Re: [Xen-users] DomU suspension/hibernation
On Tue, 2013-06-18 at 15:16 +0000, Joshua Tuttle wrote:
Hey,
I thought there was supposed to be an ability for domUâs to be put
into a hibernated state (E.g. current running tasks and memory) when
dom0 is shutdown or rebooted. When
I look in my /etc/default/xendomains file, I have the variableâs
âXENDOMAINS_SAVE=/var/lib/xen/saveâ and âXENDOMAINS_RESTORE=trueâ.
However, when I reboot, I always have
to restart my domains manually and their state was not saved.
My current configuration is as follows: Xen 4.2.1, dom0: Debian 7.0,
domU:Debian 7.0, dom0 kernel 3.2.0-4
Are you using the Debian packages or Xen compiled from source?
Which toolstack are you using?
If you installed from source, did you enable the xendomains script
when you did so? (by invoking update-rc.d or something equivalent)
Does manually running xendomains ("service xendomains stop" then "service xendomains
start") produce any output?
Ian.
I am using Xen compiled from source. 4.2.1 and the XL toolstack.
I ran update rc.d on xecommons, xend, xendomains, xen-watchdog.
Xend can probably be disabled, I'm not sure if having it running would be
causing a problem.
Manually stopping xendomains produces a line that confirms xendomains is
stopped.
Starting xendomains produces no output, but I check the service with "xl list"
Have a read of http://osdir.com/ml/general/2013-05/msg46973.html and see if
this is the same issue (sorry for not linking directly to Xen, Google seems to
link to the wrong message when I follow its links).
If it is the same issue, then a patch has been submitted and accepted which I
believe is destined for 4.3. Also, there was an issue around the regex stuff
which got cleared up by a previous patch that I traced back to yaji (maybe!). I
don't know when the other fix came in, so you may need to go to 4.22 to apply
the linked patch.
Thanks for replying.
I applied a patch " hotplug/Linux: xendomains compatibility with xl" , but
still have had no luck. The only thing it fixed, is if I place a symlink to my config
file in /etc/xen/auto, it will automatically start the domU instance. However, its still
not putting a previous instance into a hibernated state.
I think that is the same patch I linked... which is odd because it isn't
supposed to fix an auto issue. I don't recall in issue for that myself.
Did you patch against 4.2.2 or 4.2.1? If it is the yaji/regex issue then I
think that would have caused issue against stopping rather than restarting, as
it has issue with xl list -l, AFAIR.
I presume the save file gets created, but just incase, please try:-
(Assuming you have a domU running)
root@xen6:/var/lib/xen/save# service xendomains stop Shutting down Xen domains:
vpn2(save)....
* [done]
root@xen6:/var/lib/xen/save# ls /var/lib/xen/save
vpn2
root@xen6:/var/lib/xen/save# service xendomains start Restoring Xen domains:
vpn2
* [done]
root@xen6://var/lib/xen/save# ls /var/lib/xen/save root@xen6://var/lib/xen/save#
for me, it is gone on the second ls.
If it is still there, what happens if you manually reload it with:-
xl restore /var/lib/xen/save/vpn2 (in my case)
I applied it against 4.2.1. When I run "service xendomains stop" I receive the
following output:
An error occurred while saving domain:
Option `1' not supported.
'xl save' requires at least 2 arguments.
!
(shut)
An error occurred while shutting down domain:
!
SHUTDOWN_ALL
An error occurred while shutting down all domains:
!
[ ok ] [done].
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Is this different behaviour now because you said that part was working
earlier?
What is the output of xl list -l ? I think this is the command
xendomains uses to generate the list to shutdown.
Unfortunately, you are not in the territory I thought you were.
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