使用NFSv4时、NFS客户端在接管期间需要大约1分钟来恢复写入
适用场景
- ONTAP 9
- NFSv4
问题描述
- 使用NFSv4时、NFS客户端在接管期间需要大约1分钟才能恢复I/O。
- 由于接管/交还而导致的聚合重新定位将启动锁定回收宽限期，如EMS/中所示
event log show：
示例：
[?] Wed Jul 06 09:32:36 +0800 [node2: cf_takeover: cf.fm.takeoverComplete:notice]: Failover monitor: takeover completed
[?] Wed Jul 06 09:32:36 +0800 [node2: cf_takeover: cf.fm.takeoverDuration:info]: Failover monitor: takeover duration time is 3 seconds.
[?] Wed Jul 06 09:32:03 +0800 [node2: lmgr_ng_aggr_grace_worker: lmgr.reclaim.start.grace:debug]: Lock reclaim grace period started on aggregate 'node1_Aggr_Data01' with file system id '651312343'.
[?] Wed Jul 06 09:32:48 +0800 [node2: wafl_exempt01: lmgr.reclaim.stop.grace:debug]: Lock reclaim grace period stopped on aggregate 'node1_Aggr_Data01' with file system id '651312343'.
注意：这会影响所有NFS版本
- LIF迁移将开始单独的宽限期、以使NFSv4客户端能够 回收锁定(默认值为45秒)
示例：
nblade2: Nblade.graceBegin:debug]: NFS server grace state has begun for Vserver "SVM1", LIF ID "1028", LIP IP address "10.1.1.1"
nblade2: Nblade.graceEnd:debug]: NFS server grace state has ended for Vserver "SVM1", LIF ID "1028", LIF IP address "10.1.11.1".