[CentOS-virt] Machine freeze
Mathew S. McCarrell
mccarrms at gmail.comWed Apr 29 14:18:41 UTC 2009
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Hey, I'm wondering if it is possible that your problem is related to mine. Earlier today I had to restart one of our domUs on one of our systems. I used xm shutdown instead of xm destroy and then did xm list to determine if the domU had shutdown or not. Upon issuing xm list a second time, the entire server crashed and rebooted. I've checked the logs and have yet to find anything. I've attached a transcript of the commands as I executed them on the server. The system is running CentOS 5.3 x64 w/Xen (kernel 2.6.18-128.1.6.el5xen). Any thoughts? Thanks, Matt -- Mathew S. McCarrell Clarkson University '10 mccarrms at gmail.com mccarrms at clarkson.edu 2009/4/7 Maros Timko <timkom at gmail.com> > Hi all, > > thanks to all for valuable replies. > It seems like we identified the issue. We assured that it is not HW related > as it was already reproduced on different machines and platforms, with > different BIOS versions. > We are running a system performance/statistics collector that executes > "xentop" command on Dom0 regularly. This is causing issues. If we execute: > xentop -b -d 0.1 > /dev/null > in multiple instances, it will freeze the system. > It was reproduced on CentOS 5.3 (kernel-xen-2.6.18-128.1.6.el5) system. > There is created a bug for this issue: > http://bugs.centos.org/view.php?id=3454 > > With regards, > > Tino > > > 2009/4/3 Maros TIMKO <timko at pobox.sk> > >> Hi all, >> >> we are running CentOS 5.2 Xen virtualization system with the latest CentOS >> packages with couple of VMs on DELL PowerEdge. "Sometimes" the whole machine >> freezes without anything in log files, anything on the console. "Sometimes" >> really means we cannot define why or when. Sometimes the machine was idle >> with just one VM, sometimes quite busy with couple of VMs. >> >> Has anybody had the same experience? If yes, any hints on how to resolve >> it or how to trace the cause? >> >> >> >> Thanks. >> >> _______________________________________________ >> CentOS-virt mailing list >> CentOS-virt at centos.org >> http://lists.centos.org/mailman/listinfo/centos-virt >> >> > > _______________________________________________ > CentOS-virt mailing list > CentOS-virt at centos.org > http://lists.centos.org/mailman/listinfo/centos-virt > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos-virt/attachments/20090429/02dd001d/attachment-0002.html> -------------- next part -------------- [mccarrms at isengard ~]$ ssh xen1 ___ __ _____ ___ < / \ \ / -_) _ \/ / /_\_\\__/_//_/_/ Last login: Mon Apr 27 11:26:22 2009 from isengard.cslabs.clarkson.edu [mccarrms at xen1 ~]$ sudo xm list We trust you have received the usual lecture from the local System Administrator. It usually boils down to these three things: #1) Respect the privacy of others. #2) Think before you type. #3) With great power comes great responsibility. Password: Sorry, try again. Password: Name ID Mem(MiB) VCPUs State Time(s) Domain-0 0 9899 8 r----- 12458.2 atp 11 255 1 -b---- 72748.8 auth 1 127 1 -b---- 121.7 autoguilt 2 255 1 -b---- 523.2 dukr 3 255 1 -b---- 770.4 list 5 255 1 -b---- 191.4 management 6 255 1 -b---- 517.4 osp1 7 255 1 -b---- 70.4 osp2 8 255 1 -b---- 68.8 tremulous 9 255 1 -b---- 397287.4 [mccarrms at xen1 ~]$ xm console atp ERROR Internal error: Could not obtain handle on privileged command interface (13 = Permission denied) Error: Most commands need root access. Please try again as root. [mccarrms at xen1 ~]$ sudo xm console atp Out of Memory: Kill process 2626 (TreeLimitedRun) score 96585 and children. Out of memory: Killed process 2627 (spectrum). Out of Memory: Kill process 2694 (TreeLimitedRun) score 96565 and children. Out of memory: Killed process 2695 (spectrum). Out of Memory: Kill process 2914 (TreeLimitedRun) score 96210 and children. Out of memory: Killed process 2915 (spectrum). Out of Memory: Kill process 3014 (TreeLimitedRun) score 96153 and children. Out of memory: Killed process 3015 (spectrum). Out of Memory: Kill process 3018 (TreeLimitedRun) score 96177 and children. Out of memory: Killed process 3019 (spectrum). Out of Memory: Kill process 4466 (spectrum) score 189626 and children. Out of memory: Killed process 4466 (spectrum). Out of Memory: Kill process 6324 (TreeLimitedRun) score 96129 and children. Out of memory: Killed process 6325 (spectrum). Out of Memory: Kill process 10680 (TreeLimitedRun) score 96147 and children. Out of memory: Killed process 10681 (spectrum). Out of Memory: Kill process 10800 (TreeLimitedRun) score 96167 and children. Out of memory: Killed process 10801 (spectrum). Out of Memory: Kill process 10852 (TreeLimitedRun) score 96159 and children. Out of memory: Killed process 10853 (spectrum). Out of Memory: Kill process 10856 (TreeLimitedRun) score 96218 and children. Out of memory: Killed process 10857 (spectrum). [mccarrms at xen1 ~]$ xm shutdown atp ERROR Internal error: Could not obtain handle on privileged command interface (13 = Permission denied) Error: Most commands need root access. Please try again as root. [mccarrms at xen1 ~]$ sudo xm shutdown atp [mccarrms at xen1 ~]$ sudo xm list Name ID Mem(MiB) VCPUs State Time(s) Domain-0 0 9899 8 r----- 12459.1 atp 11 255 1 -b---- 72749.6 auth 1 127 1 -b---- 121.7 autoguilt 2 255 1 -b---- 523.2 dukr 3 255 1 -b---- 770.4 list 5 255 1 -b---- 191.4 management 6 255 1 -b---- 517.4 osp1 7 255 1 -b---- 70.4 osp2 8 255 1 -b---- 68.8 tremulous 9 255 1 -b---- 397287.4 [mccarrms at xen1 ~]$ sudo xm list
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