节点报告配对节点拥有的磁盘的虚假IO延迟
适用场景
- ONTAP 9
- FAS 系统
- AFF系统
问题描述
- 系统会针对某个磁盘报告高延迟、但报告节点不拥有该磁盘。 EMS消息类似于：
[Node01: disk_latency_monitor:shm.threshold.ioLatency:debug]: Disk 11d.63.9 has exceeded the expected IO latency in the current window with average latency of 580 msecs and average utilization of 29 percent.
- 拥有磁盘的节点报告驱动器没有延迟问题描述。
- 驱动器是一个3磁盘根聚合中的单个数据磁盘。
Aggregate aggr_root_node02 (online, raid_dp) (block checksums) Plex /aggr_root_node02/plex0 (online, normal, active, pool0) RAID group /aggr_root_node02/plex0/rg0 (normal, block checksums) RAID Disk Device HA SHELF BAY CHAN Pool Type RPM Used (MB/blks) Phys (MB/blks) --------- ------ ------------- ---- ---- ---- ----- -------------- -------------- dparity 2a.65.0 2a 65 0 SA:A 0 FSAS 7200 3807816/7798408704 3815447/7814037168 parity 9a.51.0 9a 51 0 SA:A 0 FSAS 7200 3807816/7798408704 3815447/7814037168 data 9b.63.9 9b 63 9 SA:B 0 FSAS 7200 3807816/7798408704 3815447/7814037168