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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-users] dom0 networking getting screwd at random periods
On Wed, Jun 15, 2011 at 5:26 AM, Martins Lazdans <marrtins@xxxxxxxx> wrote: > Does anyone have any hint where to dig? Right now I wrote a script that > checks ping to gateway and in case of timeouts restarts bridge and > reattaches domUs to it. Right now bridge is stopping working like every 3 > minutes. Can this be hardware related? > You may want to consider setting up the bridges manually with the CentOS networking scripts. This is actually the default way of doing things starting with Xen 4.1 http://wiki.xensource.com/xenwiki/HostConfiguration/Networking The standard bridging built into CentOS may end up being more stable for you. Hope that helps. Thanks, Todd > One guy replied to me directly having the same problem on CentOS (I guess it > was CentOS). > > Martins Lazdans wrote: >> >> Hello! >> >> I having a problem with dom0 (running Debian lenny, latest patches >> applied) networking getting stopped after random periods of time - it's been >> 18 hours and it's been 5 hours. dom0 got two NIC (peth0, peth1), two subnets >> (a, b), configured two bridges (eth0, eth1 - each subnet resides on >> different NIC). dom0 have each NIC configured with dedicated IP form >> correspongin subnets. So, eth0 serves subnet a, while eth1 is serving subnet >> b. >> >> In xend-config.sxp: >> (network-script network-bridge-wrapper) and network-bridge-wrapper is >> just: >> >> #!/bin/sh >> /etc/xen/scripts/network-bridge "$@" netdev=eth0 >> /etc/xen/scripts/network-bridge "$@" netdev=eth1 >> >> After random periods of time, eth0 goes down along with all domU >> networking attached to it. I'm unnable to connect or ping dom0 neither on >> peth0 nor peth1 nor any of domU attached to that bridge. >> >> However, domU using eth1 bridge are working just fine. I can SSH to domU >> and then SSH to dom0 on peth1 IP address (remember, I could not do that form >> "outside"). >> >> After I do `/etc/xen/scripts/network-bridge stop` and then start, dom0 >> networking comes back. I just do `brctl addif eth0 vifX.0` to attach domUs >> back and all works fine till next such event. >> >> Anyone had experienced such thing? I've been running this server for some >> three years w/o problems. This problem started around 31 of may. Maybe it >> has something to do with any of latest updates? >> >> There are no network spikes, no high load avg, nothing in logfiles, >> nothing on xm dmesg, ne domU restarts. I've been searching Google for some >> days now, and nothing comes up. >> >> Basicly, I've got the same issue as described here: >> http://lists.xensource.com/archives/html/xen-users/2008-03/msg00609.html >> >> Btw, I've got very similar issue twice with other sarver, differend >> hardware, different data center, CentOS 5.6, Xen 3.4.2. However, that server >> was using only one NIC so I'm not aware if this was excacly the same >> problem. I ran into this problem twice, about two months ago. However there >> is no errors since then which made me believe problem was solved with some >> OS updates? Back then I thought it's beeing hardware error as I had this >> server deployed only 3 months before incident. >> >> My config is below. >> >> Many thanks! >> >> # uname -a >> Linux doom 2.6.26-2-xen-amd64 #1 SMP Tue Jan 25 06:13:50 UTC 2011 x86_64 >> GNU/Linux >> >> # xm info >> host : doom >> version : #1 SMP Tue Jan 25 06:13:50 UTC 2011 >> machine : x86_64 >> nr_cpus : 8 >> nr_nodes : 1 >> cores_per_socket : 4 >> threads_per_core : 1 >> cpu_mhz : 2200 >> hw_caps : >> 178bf3ff:efd3fbff:00000000:00000110:00802001:00000000:000007ff >> total_memory : 32767 >> free_memory : 2116 >> 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 >> >> > > -- > Martins Lazdans > > _______________________________________________ > Xen-users mailing list > Xen-users@xxxxxxxxxxxxxxxxxxx > http://lists.xensource.com/xen-users > -- Todd Deshane http://www.linkedin.com/in/deshantm http://www.xen.org/products/cloudxen.html http://runningxen.com/ _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users
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