Bug #5171
KVM detach_nic should check if NIC is not present anymore
Status: | Closed | Start date: | 05/25/2017 | |
---|---|---|---|---|
Priority: | Normal | Due date: | ||
Assignee: | - | % Done: | 0% | |
Category: | Drivers - Network | |||
Target version: | Release 5.4 | |||
Resolution: | fixed | Pull request: | ||
Affected Versions: | OpenNebula 5.2 |
Description
Apparently, there can be edge cases (bugs) when the NIC detach on KVM fails, but the libvirt returns success:
# time virsh detach-interface one-39643 bridge --mac 02:00:ac:11:00:59 Interface detached successfully real 0m4.023s user 0m0.012s sys 0m0.007s # time virsh detach-interface one-39643 bridge --mac 02:00:ac:11:00:59 Interface detached successfully real 0m4.029s user 0m0.012s sys 0m0.010s # time virsh domiflist one-39643 Interface Type Source Model MAC ------------------------------------------------------- one-39643-0 bridge onebr1100 virtio 02:00:ac:11:10:d2 one-39643-1 bridge onebr1047 virtio 02:00:ac:11:10:68 one-39643-2 bridge onebr1176 virtio 02:00:ac:11:11:6b one-39643-3 bridge onebr1183 virtio 02:00:ac:11:11:79 one-39643-4 bridge onebr1000 virtio 02:00:ac:11:10:0a one-39643-5 bridge onebr912 virtio 02:00:ac:11:00:59
In this case, also the kvm/detach_nic returns success to the OpenNebula:
# ./detach_nic one-39643 02:00:ac:11:00:59 #
which unfortunately leads to the inconsistency between the OpenNebula view and real libvirt/KVM state.
It would be better to check for the success on our own, similarly as it's done for the kvm/detach_disk.
Seen on CentOS 7 with:- kernel 3.10.0-327.36.3.el7.x86_64
- libvirt-2.0.0-10.el7_3.5.x86_64
- qemu-kvm-1.5.3-126.el7_3.6.x86_64
History
#1 Updated by Vlastimil Holer about 4 years ago
This PR https://github.com/OpenNebula/one/pull/314
only follows the code of the detach_disk.
Fails if NIC is still present after detach:
# ./detach_nic one-39643 02:00:ac:11:00:59 ERROR MESSAGE --8<------ Could not detach NIC (02:00:ac:11:00:59) from one-39643 ERROR MESSAGE ------>8--
#2 Updated by Vlastimil Holer about 4 years ago
- Status changed from Pending to Closed
- Resolution set to fixed