[Xen-API] RE: [Xen-users] Re: [XCP] cdrommon issue

[<cluster@xxxxxxxx>]

Hi Dave,

thanks a lot for your answer.

I tried to comment out cdrommon line from xenservices, i didn't reboot the
machine instead i restarted xen-api by using xe-toolstack-restart.

After restarting toolstack, as always, 2 processes VGS first and, after
killing it, LVM second consume 99% of cpu!

This problem is the same that affect the operation of live migration and
startup/poweroff and that jeopardize the possibility to restart the
physical host.

Do you know a safe way to restart cdrommon without restarting the physical
server? Where can i submit the bug and should i report any other
information?

Many thanks and regards,
Francesco 


On Wed, 18 Aug 2010 13:42:33 +0100, Dave Scott <Dave.Scott@xxxxxxxxxxxxx>
wrote:
> Hi,
> 
> I've heard other reports of cdrommon going crazy but I don't think anyone
> has filed a bug yet. Can you try commenting it out from
> /etc/init.d/xenservices?
> 
> Cheers,
> Dave
> 
>> -----Original Message-----
>> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-users-
>> bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of cluster@xxxxxxxx
>> Sent: 14 August 2010 17:23
>> To: xen-users@xxxxxxxxxxxxxxxxxxx
>> Cc: gallo@xxxxxxxxxx
>> Subject: [Xen-users] Re: [XCP] cdrommon issue
>> 
>> 
>> Hi all,
>> 
>> this problem is still present also in XCP 0.5
>> 
>> After 5 or 6 days of phisical server normal running, the process
>> cdrommon
>> start to consume about 97% of cpu causing VMs to become unresponsive.
>> 
>> When I kill the process (kill -9 [cdrommon_pid]) operation like migrate
>> or
>> start or stop VMs became impossible.
>> 
>> Is there a safe way to restart cdrommon?
>> 
>> My hardware is DELL PowerEdge 2950. Is there already a bug submission?
>> 
>> Thanks for any help, this bug make the system very unstable.
>> 
>> Cheers,
>> Francesco Gallo
>> 
>> 
>> On Thu, 22 Jul 2010 16:25:10 +0200, "Francesco Gallo"
>> <gallo@xxxxxxxxxx>
>> wrote:
>> > Hi all,
>> >
>> >
>> >
>> > Sometimes the process cdrommon use 99,8% of CPU and the result is
>> that
>> all
>> > vms becames very slow.
>> >
>> >
>> >
>> > I killed the process and now everything is fine but I can't live
>> migrate
>> > VMS.
>> >
>> >
>> >
>> > I found this problem also in this citrix thread:
>> >
>> >
>> >
>> > http://forums.citrix.com/thread.jspa?messageID=1475962
>> >
>> <http://forums.citrix.com/thread.jspa?messageID=1475962&tstart=0#147596
>> 2>
>> > &tstart=0#1475962
>> >
>> >
>> >
>> > My XCP version is still 0.1.1
>> >
>> >
>> >
>> > Any solution?
>> >
>> >
>> >
>> > Regards,
>> >
>> > Francesco Gallo
>> 
>> _______________________________________________
>> Xen-users mailing list
>> Xen-users@xxxxxxxxxxxxxxxxxxx
>> http://lists.xensource.com/xen-users

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