[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-API] race condition during /etc/xensource/scripts/vif call
Interesting - it might be that you're racing with xapi - it's waiting for the hot plug key to be removed, which is what the xenstore-rm does. Have a look here: https://github.com/xen-org/xen-api/blob/master/ocaml/xenops/device.ml#L752 (Note that this is more current than XCP 1.0 or 1.1, but the general gist is the same) Jon On 22 Sep 2011, at 16:18, George Shuklin wrote: > Good day. > > Found strange situation for VM with two or more interfaces: data > from /xapi for domain disappear before vif remove called second time. > > Here little patch to vif script (against XCP 1.1 beta) to log XenStore > state: > > --- vif.orig 2011-05-19 02:32:19.000000000 +0400 > +++ vif 2011-09-22 19:11:10.000000000 +0400 > @@ -227,6 +227,8 @@ > xenstore-rm "${HOTPLUG}/hotplug" > fi > logger -t scripts-vif "${dev} has been removed" > + echo ====domid=$DOMID===== >>/var/log/vif-race.log > + xenstore-ls /xapi >>/var/log/vif-race.log > remove_from_bridge > ;; > esac > > > To see 'strange' add to any vm two interfaces and reboot it. > > In vif-race.log for second time vif call: > ====domid=3===== > 0 = "" > hotplug = "" > vbd = "" > private = "" > vbd = "" > 51712 = "" > ref = "OpaqueRef:1a7992ae-a645-acc6-bf51-3a0202bdd4c7" > frontend = "" > vbd = "" > 3: > > (no data for domid 3). > > I'm not sure if this is a really serious bug, but I found my > antispoofing patch does not remove rules from OVS for multihomed VM's > due lack of 'bridge' variable for VIF (I'm calling remove_restiction() > function in 'remove' case in vif script). > > I got this bug in XCP 1.0 and XCP1.1 beta. > > > > _______________________________________________ > xen-api mailing list > xen-api@xxxxxxxxxxxxxxxxxxx > http://lists.xensource.com/mailman/listinfo/xen-api _______________________________________________ xen-api mailing list xen-api@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/mailman/listinfo/xen-api
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