Hello, I hope someone can help me with a suddenly reoccuring problem. The problems is all of a sudden I get the following error from xend while creating servers: "xend.err ''Device 0 (vif) could not be connected. Hotplug scripts not working.'')" The full xend error log is @ http://pastebin.com/m5c12e60e There isn''t any problem with the servers that are already running on the Node, I can easily shut them down as well. Only problem is I can not create any new servers - any server creation will result the above error. After seeing this error if I do a "ps aux | grep xenwatch". I get the following root 69 0.0 0.0 0 0 ? D< May05 0:00 [xenwatch] Which seems to me that xenwatch process is in a blocked state (D flag is uninterruptable sleep). Rebooting the node will fixed the problem but this is not preferred as it affects the other running VMs, I tried restarting xend and it had no effect on the problem. I would really appreciate if you can give me some insight to the problem and any fixes for it. Thanks in advance, Iain Watson -- "Just think how stupid the average person is, and then realize that half of them are even stupider!" --George Carlin _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Wed, May 13, 2009 at 8:47 PM, Iain J. Watson <iain@ij-watson.co.uk> wrote:> Hello, > > I hope someone can help me with a suddenly reoccuring problem. The > problems is all of a sudden I get the following error from xend while > creating servers: > > "xend.err ''Device 0 (vif) could not be connected. Hotplug scripts > not working.'')" >Is udevd running? _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Wed, May 13, 2009 at 2:49 PM, Fajar A. Nugraha <fajar@fajar.net> wrote:> On Wed, May 13, 2009 at 8:47 PM, Iain J. Watson <iain@ij-watson.co.uk> wrote: >> Hello, >> >> I hope someone can help me with a suddenly reoccuring problem. The >> problems is all of a sudden I get the following error from xend while >> creating servers: >> >> "xend.err ''Device 0 (vif) could not be connected. Hotplug scripts >> not working.'')" >> > > Is udevd running? >Yes it is: root 773 0.0 0.0 12616 796 ? S<s May05 0:11 /sbin/udevd -d Thanks for looking into this with me, Iain -- "Just think how stupid the average person is, and then realize that half of them are even stupider!" --George Carlin _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Wed, May 13, 2009 at 8:52 PM, Iain J. Watson <iain@ij-watson.co.uk> wrote:>>> "xend.err ''Device 0 (vif) could not be connected. Hotplug scripts >>> not working.'')" >>> >> >> Is udevd running? >> > > Yes it is: > > root 773 0.0 0.0 12616 796 ? S<s May05 0:11 /sbin/udevd -dWeird. When I got that error it''s always udevd dead. Perhaps this is relevant to your problem http://www.centos.org/docs/5/html/Virtualization-en-US/ch19s23.html https://bugzilla.redhat.com/show_bug.cgi?id=456926 Also please check : - are you using file:/ backed domUs? - what is the domain ID of the last domU you created (is it over 1000?) Regards, Fajar _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Wed, May 13, 2009 at 3:10 PM, Fajar A. Nugraha <fajar@fajar.net> wrote:> On Wed, May 13, 2009 at 8:52 PM, Iain J. Watson <iain@ij-watson.co.uk> wrote: >>>> "xend.err ''Device 0 (vif) could not be connected. Hotplug scripts >>>> not working.'')" >>>> >>> >>> Is udevd running? >>> >> >> Yes it is: >> >> root 773 0.0 0.0 12616 796 ? S<s May05 0:11 /sbin/udevd -d > > Weird. When I got that error it''s always udevd dead.Do you mean as in not running at all, or sitting hung on something? Is it safe to restart udevd with regards to not breaking already running domUs? I''ve attached strace to the udevd process on the 3 xen dom0s affected by this and found they are all in the same state, but I don''t know if this is normal for udevd or a problem: select(8, [3 4 5 7], NULL, NULL, NULL <unfinished ...>> > Perhaps this is relevant to your problem > http://www.centos.org/docs/5/html/Virtualization-en-US/ch19s23.html > https://bugzilla.redhat.com/show_bug.cgi?id=456926 >Neither of these URLs show anything similar to what I am seeing.> Also please check : > - are you using file:/ backed domUs? > - what is the domain ID of the last domU you created (is it over 1000?) >The domUs are backed by iSCSI LUNs so are block:/ backed. The domain IDs are well below 1000, the last IDs were around 200.> Regards, > > Fajar > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users >-- "Just think how stupid the average person is, and then realize that half of them are even stupider!" --George Carlin _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users