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#1475962> &tstart=0#1475962 My XCP version is still 0.1.1 Any solution? Regards, Francesco Gallo _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
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@xigroup.it> wrote:> Hi all, > > > > Sometimes the process cdrommon use 99,8% of CPU and the result is thatall> 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#1475962> > &tstart=0#1475962 > > > > My XCP version is still 0.1.1 > > > > Any solution? > > > > Regards, > > Francesco Gallo_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
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@lists.xensource.com [mailto:xen-users- > bounces@lists.xensource.com] On Behalf Of cluster@xinet.it > Sent: 14 August 2010 17:23 > To: xen-users@lists.xensource.com > Cc: gallo@xigroup.it > 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@xigroup.it> > 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@lists.xensource.com > http://lists.xensource.com/xen-users_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
<cluster@xinet.it>
2010-Aug-18 13:22 UTC
[Xen-API] RE: [Xen-users] Re: [XCP] cdrommon issue
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@eu.citrix.com> 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@lists.xensource.com [mailto:xen-users- >> bounces@lists.xensource.com] On Behalf Of cluster@xinet.it >> Sent: 14 August 2010 17:23 >> To: xen-users@lists.xensource.com >> Cc: gallo@xigroup.it >> 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@xigroup.it> >> 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@lists.xensource.com >> http://lists.xensource.com/xen-users_______________________________________________ xen-api mailing list xen-api@lists.xensource.com http://lists.xensource.com/mailman/listinfo/xen-api