Bug 2175449
| Summary: | Networking receive/transmit_bytes metrics values are swapped for pre-created macvtap device | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 9 | Reporter: | yalzhang <yalzhang> |
| Component: | libvirt | Assignee: | Michal Privoznik <mprivozn> |
| libvirt sub component: | Networking | QA Contact: | yalzhang <yalzhang> |
| Status: | CLOSED ERRATA | Docs Contact: | |
| Severity: | unspecified | ||
| Priority: | unspecified | CC: | dzheng, jdenemar, lmen, virt-maint |
| Version: | 9.2 | Keywords: | Triaged, Upstream |
| Target Milestone: | rc | Flags: | pm-rhel:
mirror+
|
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | libvirt-9.2.0-1.el9 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2023-11-07 08:30:47 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | 9.2.0 |
| Embargoed: | |||
Patches posted on the list: https://listman.redhat.com/archives/libvir-list/2023-March/238400.html Merged upstream as: 928e741172 src: Document virDomainInterfaceStats() limitation 172dd3d9f7 conf: Make macvtap ethernet share host view v9.1.0-57-g928e741172 Test on libvirt-9.2.0-1.el9.x86_64 with the same steps in comment 0, the issue is fixed. From the guest: # ip -s l show enp1s0 2: enp1s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000 link/ether 52:54:00:11:11:11 brd ff:ff:ff:ff:ff:ff RX: bytes packets errors dropped missed mcast 625194377 95305 0 0 0 0 TX: bytes packets errors dropped carrier collsns 5499660 83251 0 0 0 0 From the host: # virsh domifstat avocado-vt-vm1 mymacvtap0 mymacvtap0 rx_bytes 625204985 mymacvtap0 rx_packets 95421 mymacvtap0 rx_errs 0 mymacvtap0 rx_drop 0 mymacvtap0 tx_bytes 5500954 mymacvtap0 tx_packets 83266 mymacvtap0 tx_errs 0 mymacvtap0 tx_drop 0 Test on libvirt-9.3.0-2.el9.x86_64, the result is as expected. Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (Moderate: libvirt security, bug fix, and enhancement update), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHSA-2023:6409 |
Description of problem: The statistics from domifstat will be reversed for pre-created macvtap devices Version-Release number of selected component (if applicable): libvirt-9.0.0-7.el9.x86_64 How reproducible: 100% Steps to Reproduce: 1. create a macvtap device: # ip link add link eno1 name mymacvtap0 address 52:54:00:11:11:11 type macvtap mode bridge # ip link set mymacvtap0 up 2. start a vm with ethernet interface with managed=no and use this macvtap device: # virsh dumpxml rhel --xpath //interface <interface type="ethernet"> <mac address="52:54:00:11:11:11"/> <target dev="mymacvtap0" managed="no"/> <model type="virtio"/> <alias name="net0"/> <address type="pci" domain="0x0000" bus="0x01" slot="0x00" function="0x0"/> </interface> 3. start the vm and download a file, then check the statistics both on guest and host: [on guest]# ip -s l show enp1s0 2: enp1s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000 link/ether 52:54:00:11:11:11 brd ff:ff:ff:ff:ff:ff RX: bytes packets errors dropped missed mcast 517301139 347222 0 135 0 0 TX: bytes packets errors dropped carrier collsns 18240947 224857 0 0 0 0 [on host]# virsh domifstat rhel mymacvtap0 ---- > it's not guest view, which is reversed mymacvtap0 rx_bytes 18241853 mymacvtap0 rx_packets 224868 mymacvtap0 rx_errs 0 mymacvtap0 rx_drop 0 mymacvtap0 tx_bytes 517337187 mymacvtap0 tx_packets 347773 mymacvtap0 tx_errs 0 mymacvtap0 tx_drop 51 Actual results: The statistics from domifstat will be reversed for pre-created macvtap devices Expected results: The statistics get from the domifstat should show the guest view Additional info: