High latency observed on volume with quotas enabled
Applies to
- ONTAP 9
- Quota
Issue
- High Write or Other latency on a volume with quota enabled.
- Node hosting the affected volume report 100% CPU utilization for brief duration on AIQUM which is not seen on CLI sysstat commands :
- Users hosted on VDI environment report slow login and blank screen upon logon.
- EMS messages showing that quota exceeded events:
[node1: wafl_exempt13: quota.exceeded:debug]: params: {'ltype': 'hard', 'limit_value': '1024000', [node1: wafl_exempt02: wafl.quota.userQtree.exceeded.win:notice]: tid 2: disk quota exceeded on volume Additional warnings will be suppressed for approximately 60 minutes or until a 'quota resize' is performed.