There are also a few kvm bugs which could be related, what kernel and qemu-kvm versions are you running?
Rafael On Mon, Jun 1, 2015 at 7:23 PM, Simon Weller <swel...@ena.com> wrote: > What does arp show you on the VR when this occurs? > Can you isolate this VR to a different physical host and upstream switch? > If you leave a ping going to some external ip (e.g. 8.8.8.8) from the VR, > do you still lose connectivity? > > ________________________________________ > From: Nux! <n...@li.nux.ro> > Sent: Monday, June 1, 2015 12:15 PM > To: us...@cloudstack.apache.org > Cc: dev@cloudstack.apache.org > Subject: Re: Regular total loss of connectivity > > Ok, no luck with e1000 either, connectivity is lost after 4 hours (14400 > sec). That can't be random. > > Any ideas? > > -- > Sent from the Delta quadrant using Borg technology! > > Nux! > www.nux.ro > > ----- Original Message ----- > > From: "Nux!" <n...@li.nux.ro> > > To: us...@cloudstack.apache.org > > Cc: dev@cloudstack.apache.org > > Sent: Monday, 1 June, 2015 14:35:09 > > Subject: Re: Regular total loss of connectivity > > > Nope, it's a regular, non-redundant VR. > > > > I've switched to using e1000 instead of virtio, waiting for a few hours, > so how > > it pans out. :-) > > > > -- > > Sent from the Delta quadrant using Borg technology! > > > > Nux! > > www.nux.ro > > > > ----- Original Message ----- > >> From: "Simon Weller" <swel...@ena.com> > >> To: dev@cloudstack.apache.org > >> Cc: "Cloudstack Users List" <us...@cloudstack.apache.org> > >> Sent: Monday, 1 June, 2015 13:32:26 > >> Subject: Re: Regular total loss of connectivity > > > >> Is this VR in a redundant pair? If so, does stopping the master and > allowing the > >> slave to take over allow the flow of traffic to resume? > >> > >> > >> ________________________________________ > >> From: Nux! <n...@li.nux.ro> > >> Sent: Monday, June 1, 2015 6:45 AM > >> To: dev@cloudstack.apache.org > >> Cc: Cloudstack Users List > >> Subject: Re: Regular total loss of connectivity > >> > >> Thanks Simon, > >> > >> link up/down has not helped, setting tso etc off on the link has not > helped > >> either. > >> Connectivity is lost as usual after ~4 hours. > >> > >> I found some suggestions to try and use the e1000 nic instead of > virtio, will do > >> that. > >> > >> Lucian > >> > >> -- > >> Sent from the Delta quadrant using Borg technology! > >> > >> Nux! > >> www.nux.ro > >> > >> ----- Original Message ----- > >>> From: "Simon Weller" <swel...@ena.com> > >>> To: "dev" <dev@cloudstack.apache.org>, "Cloudstack Users List" > >>> <us...@cloudstack.apache.org> > >>> Sent: Sunday, 31 May, 2015 22:36:56 > >>> Subject: Re: Regular total loss of connectivity > >> > >>> If you ifdown the interface on the router and then ifup it again, does > the arp > >>> problem resolve itself? > >>> > >>> We've seen a similar issue before caused by malicious/heavy traffic > related to > >>> this bug: > >>> > >>> https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/997978 > >>> > >>> - Si > >>> ________________________________________ > >>> From: Nux! <n...@li.nux.ro> > >>> Sent: Sunday, May 31, 2015 4:25 PM > >>> To: dev; Cloudstack Users List > >>> Subject: Regular total loss of connectivity > >>> > >>> Hi, > >>> > >>> Following a power cut, one of my cloudstack deployments is having a > really weird > >>> problem that I cannot seem to solve on my own. > >>> Every 3 hours all the public IPs on the VR stop responding from the > Internet. > >>> From the VR they are of course all reachable. > >>> In the same VLAN as the public IPs there is another physical server, > this one > >>> can also access the VMs on their IPs just fine. > >>> > >>> The provider has not found the problem and hints at problems with the > cloud > >>> platform, however cloudstack worked just fine until the power cut, not > to > >>> mention the problem persists through HV and ACS upgrades. > >>> > >>> I'm thinking network side arp issues or something like this, alas I am > not that > >>> good with network stuff and don't have access to it anyway. > >>> > >>> If I reboot the VR once or twice the IPs start working again and the > VMs are > >>> accessible from the internet. > >>> > >>> Ideas? > >>> > >>> Env: CentOS 6, KVM, ACS 44 to 4.5.1, Adv zone > >>> > >>> Lucian > >>> > >>> -- > >>> Sent from the Delta quadrant using Borg technology! > >>> > >>> Nux! > > > > www.nux.ro >
