On Tue, Jul 29, 2014 at 3:44 PM, Daniel Bradler daniel@bradler.com wrote:

Hi,

we have a couple of nodes based on CentOS 6 and Xen4CentOS. Unfortunately some of these nodes keep crashing frequenly.

We use the latest versions:

# uname -r 3.10.43-11.el6.centos.alt.x86_64

# xm info host : vserver20 release : 3.10.43-11.el6.centos.alt.x86_64 version : #1 SMP Mon Jun 16 14:22:02 UTC 2014 machine : x86_64 nr_cpus : 24 nr_nodes : 2 cores_per_socket : 6 threads_per_core : 2 cpu_mhz : 2400 hw_caps : bfebfbff:2c100800:00000000:00003f40:009ee3fd:00000000:00000001:00000000 virt_caps : hvm hvm_directio total_memory : 65527 free_memory : 22692 free_cpus : 0 xen_major : 4 xen_minor : 2 xen_extra : .4-33.el6 xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64 xen_scheduler : credit xen_pagesize : 4096 platform_params : virt_start=0xffff800000000000 xen_changeset : unavailable xen_commandline : dom0_mem=2560M,max:3072M loglvl=all guest_loglvl=all cc_compiler : gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-4) cc_compile_by : mockbuild cc_compile_domain : centos.org cc_compile_date : Mon Jun 16 17:22:14 UTC 2014 xend_config_format : 4

Our configuration looks as follows:

Grub:

title CentOS (3.10.43-11.el6.centos.alt.x86_64) root (hd0,1) kernel /xen.gz dom0_mem=2560M,max:3072M loglvl=all guest_loglvl=all module /vmlinuz-3.10.43-11.el6.centos.alt.x86_64 ro root=/dev/sda1 KEYBOARDTYPE=pc KEYTABLE=de-latin1-nodeadkeys crashkernel=auto module /initramfs-3.10.43-11.el6.centos.alt.x86_64.img

/etc/xen/xend-config.sxp

(xend-unix-server yes) (xend-relocation-server no) (xend-relocation-hosts-allow '^localhost$ ^localhost\.localdomain$') (network-script network-bridge) (vif-script vif-bridge) (dom0-min-mem 1024) (enable-dom0-ballooning no) (total_available_memory 0) (dom0-cpus 0) (vncpasswd '')

I've attached the logfile information regarding the latest crash as crash.log?

Thanks for this report -- would it be possible to get a full console log from boot?

-George