The following type of alert is being observed in WebCP > Monitoring > Alerts:
Network interface “<iface_name>” on node “<hostname>” is missing important features (or has them disabled): “<feature_name>”.
Acronis Cyber Infrastructure periodically checks each network interface for features that are important from performance point of view and shows the corresponding alert warning about missing features.
Check and enable network interface features via ethtool CLI , e.g:
1. Alert example:
Network interface "eth0" on node "node01" is missing important features (or has them disabled): "tx_checksumming, scatter_gather, tcp_segmentation_offload"
2. Manual check of the network interface features shows that they are disabled:
[root@node01 ~]# ethtool -k eth0 | egrep 'tx-checksumming|scatter-gather|segmentation'
tx-scatter-gather-fraglist: off [fixed]
tx-tcp-ecn-segmentation: off [fixed]
generic-segmentation-offload: off [requested on]
tx-fcoe-segmentation: off [fixed]
tx-gre-segmentation: off [fixed]
tx-ipip-segmentation: off [fixed]
tx-sit-segmentation: off [fixed]
tx-udp_tnl-segmentation: off [fixed]
tx-gre-csum-segmentation: off [fixed]
tx-udp_tnl-csum-segmentation: off [fixed]
tx-sctp-segmentation: off [fixed]
3. Enable the required features manually:
[root@node01 ~]# ethtool -K eth0 sg on
[root@node01 ~]# ethtool -K eth0 tx on
Some network adapters (especially virtual adapters) may not support the required features, so enabling of the features will fail with error 'Could not change any device features'.
man ethtool for more details.