由于 WAFL 非常的原因，服务器无法写入 LUN 内存不足

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Category:: ontap-9

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适用于

ONTAP 9.2 或更低版本

问题

节点脱机（挂起），聚合状态未知，无法响应 ONTAP 命令行界面：

::> aggr show Info: Node node_name_2 that hosts aggregate aggr0_node_name_2 is offline Node node_name_2 that hosts aggregate aggr2_node_name_2 is offline

Aggregate Size Available Used% State #Vols Nodes RAID Status --------- -------- --------- ----- ------- ------ ---------------- ------------ ... aggr0_node_name_2 - - - unknown - node_name - aggr2_node_name_2 - - - unknown - node_name -

::> storage failover show Takeover Node Partner Possible State Description -------------- -------------- -------- ------------------------------------- node_name_1 node_name_2 true Connected to node_name node_name_2 node_name_1 - Up. Node accessible via HA-IC, but cluster access failed 2 entries were displayed.

服务器无法在 LUN 上写入数据，并且数据和根聚合处于脱机状态。EMS 日志 示例：

Sat Jan 09 04:14:35 CET [node_name-01: scsit_lu_1: wafl.memory.statusVeryLowMemory:alert]: WAFL is running very low on memory, with 1454MB remaining.
 Sat Jan 09 04:19:35 CET [node_name-01: scsit_lu_0: wafl.memory.statusVeryLowMemory:alert]: WAFL is running very low on memory, with 0MB remaining.
 Sat Jan 09 04:57:17 CET [node_name-01: scsit_lu_1: wafl.memory.statusVeryLowMemory:alert]: WAFL is running very low on memory, with 445MB remaining.

系统正常运行时间超过 300 天。

Sat Jan 09 01:00:00 CET [node_name-01: statd: kern.uptime.filer:info]:   1:00am up 398 days, 12:12 3 NFS ops, 0 CIFS ops, 0 HTTP ops, 78932960637 FCP ops, 0 iSCSI ops