[Bug 728519] Re: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04
This bug was filed against a series that is no longer supported and so is being marked as Won't Fix. If this issue still exists in a supported series, please file a new bug. This change has been made by an automated script, maintained by the Ubuntu Kernel Team. ** Changed in: linux (Ubuntu) Status: Incomplete => Won't Fix -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/728519 Title: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/728519/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 728519] Re: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04
vif-bridge: https://gist.github.com/26ce1eea5a1db0ae26a6#file_vif_bridge.sh It seems to be random, no pattern as far as we can tell. We've had guests lose one, then the other after a reboot. I haven't noticed if it has anything to do with Mac addresses. I'll check next time. Yes, we have seen reoccurrences after a reboot. Upgrade procedure is here: https://gist.github.com/26ce1eea5a1db0ae26a6#file_upgrade -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/728519 Title: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 728519] Re: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04
Could you show the contents of /etc/xen/scripts/vif-bridge? Is it random whether the 10.x.x.x or 216.x.x.x device goes down? Is it perhaps always the one with the higher or lower mac address? Once this affects a guest, and after a reboot, does it ever re-occur on the same guest? You showed install instruction, but not upgrade instructions. Do you just do a standard do-release-upgrade in the guest? Do you reboot afterward? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/728519 Title: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 728519] Re: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04
I actually custom-compiled the kernel in an attempt to mitigate the issue. I used 2.6.35-27-generic when the problem first appeared. Both virtual instances (tapped by vnet0 and vnet1) can always reach each other, as well as the host. As per your request, I will file a separate bug report. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/728519 Title: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 728519] Re: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04
Yes. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/728519 Title: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 728519] Re: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04
@Jesse, are you still seeing this issue? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/728519 Title: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 728519] Re: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04
Thanks @Alexander. When vnet0 is the working device, then can vnet1 talk to the host at least, or not even that? It looks like you're using a custom kernel. Is there any chance of trying with a stock kernel? Actually I'm pretty sure your issue would be different from Jesse's. Could you please file a separate bug and provide the info there? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/728519 Title: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 728519] Re: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04
I am having the exact same issue as described above, but using the following: * Ubuntu 10.10 (upgraded from 10.04, upgraded from 9.10, upgraded from 9.04 which was a fresh install). * KVM (QEMU PC emulator version 0.12.5 (qemu-kvm-0.12.5), Copyright (c) 2003-2008 Fabrice Bellard) * Linux alexo 2.6.38 #2 SMP Mon Apr 11 13:57:58 CEST 2011 x86_64 GNU/Linux I am using virt-manager to manage the virtual machines. Network settings: ~ % ip a 1: lo: mtu 16436 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth1: mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 00:1b:21:3a:ed:30 brd ff:ff:ff:ff:ff:ff inet6 fe80::21b:21ff:fe3a:ed30/64 scope link valid_lft forever preferred_lft forever 3: eth0: mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 00:1c:c0:ab:d4:2c brd ff:ff:ff:ff:ff:ff inet 10.85.25.1/16 brd 10.85.255.255 scope global eth0 inet 10.85.25.2/16 scope global secondary eth0 inet 10.85.25.3/16 scope global secondary eth0 inet 10.85.25.4/16 scope global secondary eth0 inet6 fe80::21c:c0ff:feab:d42c/64 scope link valid_lft forever preferred_lft forever 23: vnet0: mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 500 link/ether fe:54:00:e6:85:4d brd ff:ff:ff:ff:ff:ff inet6 fe80::fc54:ff:fee6:854d/64 scope link valid_lft forever preferred_lft forever 25: virbr0: mtu 1500 qdisc noqueue state UNKNOWN link/ether 00:1b:21:3a:ed:30 brd ff:ff:ff:ff:ff:ff inet 10.85.25.5/16 brd 10.85.255.255 scope global virbr0 inet6 fe80::21b:21ff:fe3a:ed30/64 scope link valid_lft forever preferred_lft forever 26: vnet1: mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 500 link/ether fe:54:00:1c:37:4f brd ff:ff:ff:ff:ff:ff inet6 fe80::fc54:ff:fe1c:374f/64 scope link valid_lft forever preferred_lft forever ~ % brctl show bridge name bridge id STP enabled interfaces virbr0 8000.001b213aed30 yes eth1 vnet0 vnet1 One of the vnet devices (which is the tap interfaces to the virtual machines) work at a time. At the moment of writing it's vnet0 - but appears to be random. I have tried all setups I can think off: * Setup above. * Turning eth1 off completely, bridging eth0 instead and using it from both host and guest. * Used eth0 for bridge and eth1 from host. Consequently, only one of my virtual machines work. Some googling have suggested it only appears on 64 bit system. Is that true for everyone here? Any other information I can provide to help shed some light on this? I am completely stumped. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/728519 Title: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 728519] Re: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04
Temporarily assigning to Chuck to see if he has any ideas pertaining to Xen. Chuck, any insight you have would be greatly appreciated. ** Changed in: linux (Ubuntu) Assignee: (unassigned) => Chuck Short (zulcss) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/728519 Title: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 728519] Re: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04
I'm not sure where the bug lies at this point, to be honest. There nothing in syslog before and after. There is nothing different on the host between upgraded and installed guests at all, and it appears this problem is occurring on KVM as well. Xen is not the issue. The problem not yet occurring on a newly installed guest doesn't necessarily mean the upgrade is what caused it since we can't manually trigger the problem. The 2.6.35-23-virtual kernel seems to be dropping network connections *much less* than the others, but not fixing it completely. This is likely why the newly installed guests haven't had this problem occur yet - they all get that kernel. Is there any information that I can provide that would help narrow down this issue? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/728519 Title: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 728519] Re: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04
So if I understand correctly, this does not in fact appear to be a bug in the kernel? Sorry if I've asked this before, but is there definately nothing in the guest's syslog right before the connection is dropped? I'm afraid I don't know enough about xen setups to be able to guess at what might be different on the host when you install (vs update) a host. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/728519 Title: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 728519] Re: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04
2.6.32-0206322611-generic was being used on this server. Unfortunately, we just had another virtual server that *is* running 2.6.35-23-virtual and does not have the xen_* modules lose network connectivity on one interface. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/728519 Title: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 728519] Re: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04
Thanks, Jesse. Could you list precisely which kernel was actually running? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/728519 Title: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 728519] Re: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04
We just had a guest lose networking. 'rmmod xen_netfront' caused the other interface to go down, and I surmise removing the other module would fail because of the attached devices: # lsmod | grep xen xen_netfront 14919 0 xen_blkfront8991 2 Turns out this guest didn't have linux- image-2.6.35-23-virtual_2.6.35-23.41, but rather the default kernel installed after the upgrade. Installing this kernel removes those modules. We'll see if it resolves the issues over time! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/728519 Title: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 728519] Re: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04
Thanks for filing this bug. Have you tried doing 'rmmod xen_netfront xen_blkfront' on an upgraded host? I'm not familiar enough with Xen to know which interfaces do what, but several of the interfaces on the host do have the same hwaddr. Do you know whether that can be related? In particular, peth1 and veth0.1 are both on xenbr1 and have the same hwaddr. And xenbr0 and xenbr1 have the same mac address presumably because they assumed those of peth0 and peth1, which are also the same. ** Changed in: linux (Ubuntu) Importance: Undecided => Low ** Changed in: linux (Ubuntu) Importance: Low => Medium ** Changed in: linux (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/728519 Title: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 728519] Re: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04
10.04 Install procedure: https://gist.github.com/26ce1eea5a1db0ae26a6#file_install 8.10 to 10.04 Upgrade procedure: https://gist.github.com/26ce1eea5a1db0ae26a6#file_upgrade -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/728519 Title: Bridged Guests losing network connectivity under non-ubuntu Xen after upgrade from 8.10 to 10.04 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
