Sergi Seira
2009-Feb-20 10:10 UTC
[Xen-users] What behaviour in PV DomU can lead to a complete Dom0 hung/crash?
Hello, I''m experiencing complete system blocking (unable to write anything via keyboard console on Dom0) under circumstances other than high load/cpu/networking (software versions below). There are 10 debian etch DomU''s running game server software (precompiled binaries srcds_amd (counterstrike source) and steam software). Dom0 is also debian etch (debian_version 4.0). I have many other xen-servers (Dom0) with the very same software and hardware but running other Dom0 servers (no counterstrike''s; mysql, spamassasins, webproxys, apaches, ...) under serious load and their uptime can be hundreds of days. I am wondering what can interfere so deep from a DomU as to hang the complete system. I can''t see anything in log files or detecting strange behaviour in rrd graphs (munin). Maybe I am missing some log debug that should be activated in order to point out the cause of all evil. My system configuration: # dpkg -l | grep xen ii libxenstore3.0 3.2.1-2 Xenstore communications library for Xen ii linux-headers-2.6.26-1-common-xen 2.6.26-10 Common header files for Linux 2.6.26-1-xen ii linux-headers-2.6.26-1-xen-amd64 2.6.26-10 Header files for Linux 2.6.26-1-xen-amd64 ii linux-image-2.6.18-5-xen-amd64 2.6.18.dfsg.1-13etch6 Linux 2.6.18 image on AMD64 ii linux-image-2.6.18-6-xen-amd64 2.6.18.dfsg.1-23 Linux 2.6.18 image on AMD64 ii linux-image-2.6.26-1-xen-amd64 2.6.26-8 Linux 2.6.26 image on AMD64 ii linux-modules-2.6.18-5-xen-amd64 2.6.18.dfsg.1-13etch6 Linux 2.6.18 modules on AMD64 ii linux-modules-2.6.18-6-xen-amd64 2.6.18.dfsg.1-23 Linux 2.6.18 modules on AMD64 ii linux-modules-2.6.26-1-xen-amd64 2.6.26-8 Linux 2.6.26 modules on AMD64 ii xen-hypervisor-3.2-1-amd64 3.2.1-2 The Xen Hypervisor on AMD64 ii xen-tools 3.9-4 Tools to manage Debian XEN virtual servers ii xen-utils-3.2-1 3.2.1-2 XEN administrative tools ii xen-utils-common 3.2.0-2 XEN administrative tools - common files ii xenstore-utils 3.2.1-2 Xenstore utilities for Xen # xm info host : g01xen02 release : 2.6.18-6-xen-amd64 version : #1 SMP Wed Oct 15 11:49:51 UTC 2008 machine : x86_64 nr_cpus : 8 nr_nodes : 1 cores_per_socket : 4 threads_per_core : 1 cpu_mhz : 2010 hw_caps : 178bf3ff:efd3fbff:00000000:00000110:00802001:00000000:000007ff total_memory : 16383 free_memory : 15637 node_to_cpu : node0:0-7 xen_major : 3 xen_minor : 2 xen_extra : -1 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 cc_compiler : gcc version 4.3.1 (Debian 4.3.1-2) cc_compile_by : waldi cc_compile_domain : debian.org cc_compile_date : Sat Jun 28 09:32:18 UTC 2008 xend_config_format : 4 I''m going to try to move forward to xen 3.3 and hope it''ll be resolved, but any directions to discover what''s happening now will be welcome, thanks Sergi _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users