Bug 608485
| Summary: | no eth0 after switch NIC | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Qian Cai <qcai> | ||||
| Component: | qemu-kvm | Assignee: | Virtualization Maintenance <virt-maint> | ||||
| Status: | CLOSED NOTABUG | QA Contact: | Virtualization Bugs <virt-bugs> | ||||
| Severity: | high | Docs Contact: | |||||
| Priority: | low | ||||||
| Version: | 6.0 | CC: | alex.williamson, mkenneth, virt-maint | ||||
| Target Milestone: | rc | ||||||
| Target Release: | --- | ||||||
| Hardware: | All | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2010-06-28 03:28:44 UTC | Type: | --- | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
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This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux major release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Major release. This request is not yet committed for inclusion. I'm not sure I understand the problem. The guest xml lists a nic:
<interface type='network'>
<mac address='52:54:00:73:74:a8'/>
<source network='default'/>
<target dev='vnet0'/>
<model type='rtl8139'/>
<alias name='net0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</interface>
Which matches the eth3 entry in the persistent udev file, and we can see in dmesg that udev renamed eth0 to eth3. If you're expecting the nic to show up as eth0, you'd at least need to change the mac address to 52:54:00:e4:21:bf. What exactly was changed about the nic in virt manager and why should it still be expected to be eth0?
Thanks for pointing out. I was stupid. |
Created attachment 427254 [details] guest xml Description of problem: I have just realized after upgraded the system, if changed the guest NIC (from virt-manager), the eth0 was gone. # cat /var/log/dmesg ... udev: starting version 147 piix4_smbus 0000:00:01.3: SMBus Host Controller at 0xb100, revision 0 8139cp: 10/100 PCI Ethernet driver v1.3 (Mar 22, 2004) 8139cp 0000:00:04.0: PCI INT A -> Link[LNKD] -> GSI 11 (level, high) -> IRQ 11 eth0: RTL-8139C+ at 0xffffc90000d0a000, 52:54:00:73:74:a8, IRQ 11 8139cp 0000:00:04.0: setting latency timer to 64 8139too Fast Ethernet driver 0.9.28 udev: renamed network interface eth0 to eth3 ACPI: PCI Interrupt Link [LNKA] enabled at IRQ 11 ... # cat /etc/udev/rules.d/70-persistent-net.rules # This file was automatically generated by the /lib/udev/write_net_rules # program run by the persistent-net-generator.rules rules file. # # You can modify it, as long as you keep each rule on a single line. # Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rule written by anaconda) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="52:54:00:e4:21:bf", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0" # net device () SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="52:54:00:b8:79:a5", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1" # PCI device 0x10ec:0x8139 (8139cp) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="52:54:00:12:a5:1b", ATTR{type}=="1", KERNEL=="eth*", NAME="eth2" # PCI device 0x10ec:0x8139 (8139cp) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="52:54:00:73:74:a8", ATTR{type}=="1", KERNEL=="eth*", NAME="eth3" Version-Release number of selected component (if applicable): host & guest (x86_64): kernel-2.6.32-37.el6 virt-manager-0.8.4-5.el6.noarch libvirt-0.8.1-9.el6.x86_64 qemu-kvm-0.12.1.2-2.78.el6.x86_64 udev-147-2.18.el6.x86_64 How reproducible: always Steps to Reproduce: 1. changed guest NIC (via virt-manager) Actual results: no eth0 Expected results: have eth0