红帽全球峰会6.8. 调试 HW Offload 流
如果您在 ovs-vswitch.log 文件中遇到以下消息，您可以使用以下步骤：
2020-01-31T06:22:11.257Z|00473|dpif_netlink(handler402)|ERR|failed to offload flow: Operation not supported: p6p1_5
2020-01-31T06:22:11.257Z|00473|dpif_netlink(handler402)|ERR|failed to offload flow: Operation not supported: p6p1_5流程
要在卸载模块上启用日志记录，并为这个失败获取额外的日志信息，请在 Compute 节点上使用以下命令：
ovs-appctl vlog/set dpif_netlink:file:dbg # Module name changed recently (check based on the version used ovs-appctl vlog/set netdev_tc_offloads:file:dbg [OR] ovs-appctl vlog/set netdev_offload_tc:file:dbg ovs-appctl vlog/set tc:file:dbg
ovs-appctl vlog/set dpif_netlink:file:dbg # Module name changed recently (check based on the version used ovs-appctl vlog/set netdev_tc_offloads:file:dbg [OR] ovs-appctl vlog/set netdev_offload_tc:file:dbg ovs-appctl vlog/set tc:file:dbgCopy to Clipboard Copied! Toggle word wrap Toggle overflow 再次检查
ovs-vswitchd日志，以查看有关此问题的更多详情。在以下示例中，因为不支持的属性标记，卸载会失败。
2020-01-31T06:22:11.218Z|00471|dpif_netlink(handler402)|DBG|system@ovs-system: put[create] ufid:61bd016e-eb89-44fc-a17e-958bc8e45fda recirc_id(0),dp_hash(0/0),skb_priority(0/0),in_port(7),skb_mark(0),ct_state(0/0),ct_zone(0/0),ct_mark(0/0),ct_label(0/0),eth(src=fa:16:3e:d2:f5:f3,dst=fa:16:3e:c4:a3:eb),eth_type(0x0800),ipv4(src=10.1.1.8/0.0.0.0,dst=10.1.1.31/0.0.0.0,proto=1/0,tos=0/0x3,ttl=64/0,frag=no),icmp(type=0/0,code=0/0), actions:set(tunnel(tun_id=0x3d,src=10.10.141.107,dst=10.10.141.124,ttl=64,tp_dst=4789,flags(df|key))),6 2020-01-31T06:22:11.253Z|00472|netdev_tc_offloads(handler402)|DBG|offloading attribute pkt_mark isn't supported 2020-01-31T06:22:11.257Z|00473|dpif_netlink(handler402)|ERR|failed to offload flow: Operation not supported: p6p1_5
2020-01-31T06:22:11.218Z|00471|dpif_netlink(handler402)|DBG|system@ovs-system: put[create] ufid:61bd016e-eb89-44fc-a17e-958bc8e45fda recirc_id(0),dp_hash(0/0),skb_priority(0/0),in_port(7),skb_mark(0),ct_state(0/0),ct_zone(0/0),ct_mark(0/0),ct_label(0/0),eth(src=fa:16:3e:d2:f5:f3,dst=fa:16:3e:c4:a3:eb),eth_type(0x0800),ipv4(src=10.1.1.8/0.0.0.0,dst=10.1.1.31/0.0.0.0,proto=1/0,tos=0/0x3,ttl=64/0,frag=no),icmp(type=0/0,code=0/0), actions:set(tunnel(tun_id=0x3d,src=10.10.141.107,dst=10.10.141.124,ttl=64,tp_dst=4789,flags(df|key))),6 2020-01-31T06:22:11.253Z|00472|netdev_tc_offloads(handler402)|DBG|offloading attribute pkt_mark isn't supported 2020-01-31T06:22:11.257Z|00473|dpif_netlink(handler402)|ERR|failed to offload flow: Operation not supported: p6p1_5Copy to Clipboard Copied! Toggle word wrap Toggle overflow
调试 Mellanox NIC
Mellanox 提供了系统信息脚本，类似于 Red Hat SOS 报告。
https://github.com/Mellanox/linux-sysinfo-snapshot/blob/master/sysinfo-snapshot.py
运行此命令时，您要创建相关日志信息的 zip 文件，这对支持问题单非常有用。
流程
您可以使用以下命令运行这个系统信息脚本：
./sysinfo-snapshot.py --asap --asap_tc --ibdiagnet --openstack
# ./sysinfo-snapshot.py --asap --asap_tc --ibdiagnet --openstackCopy to Clipboard Copied! Toggle word wrap Toggle overflow
您还可以安装 Mellanox Firmware Tools (MFT)、mlxconfig、mlxlink 和 OpenFabrics Enterprise Distribution (OFED)驱动程序。
有用的 CLI 命令
使用带有以下选项的 ethtool 工具来收集诊断信息：
- ethtool -l <uplink representor> : 查看频道数
- ethtool -I <uplink/VFs> : Check statistics
- ethtool -i <uplink rep> : View driver information
- ethtool -g <uplink rep> : Check ring size
- ethtool -k <uplink/VFs> : View enabled features
在代表器和 PF 端口中使用 tcpdump 程序来类似检查流量流。
- 您对代表或端口的链接状态进行的任何更改也会影响 VF 链接状态。
- 代表端口统计存在 VF 统计。
使用以下命令获取有用的诊断信息：
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