哪些条件可以触发卷的自动缩减？

1. 必须满足以下三个条件：
   1. -autosize-mode 参数设置为 grow_shrink。
   2. 现有卷大小大于中设置的值 -min-autosize。
   3. 现有卷的利用率低于中设置的值 -autosize-shrink-threshold-percent。

EMS日志示例：

Sun Aug 18 11:22:55 +0900 [node1: wafl_exempt05: wafl_vol_autoSize_done_1:notice]: params: {'event_type': 'shrink', 'vol': 'vol1', 'app': '', 'volident': '@vserver:067123ea-ae7f-11ec-bfab-xxxxxxxx', 'size': '1.00GB', 'object_uuid': '4c5f7523-c120-11ec-8f5e-xxxxxxxx'}
Sun Aug 18 11:25:05 +0900 [node1: wafl_exempt08: wafl_vol_autoSize_done_1:notice]: params: {'event_type': 'shrink', 'vol': 'vol1', 'app': '', 'volident': '@vserver:067123ea-ae7f-11ec-bfab-xxxxxxxx', 'size': '1.00GB', 'object_uuid': '4c5f7523-c120-11ec-8f5e-xxxxxxxx'}  

2. 此外、 [1]  ONTAP 9.14.1或更高版本中的重新平衡FlexGroup卷也可能会在FlexGroup的成分卷(成分卷、CV)之间触发大小调整

EMS日志示例：

Sun Aug 18 12:22:10 +0900 [node1: wafl_exempt12: fg_member_elastic_sizing_1:notice]: params: {'constituent_dsid': '1069', 'object_name': 'Flexgroup', 'current_size': '105945335', 'new_size': '105549644', 'constituent_name': 'Flexgroup__0001(1)', 'operation': 'SHRUNK', 'partner_name': 'Flexgroup__0002', 'partner_dsid': '1070', 'size': '390523330560', 'used': '251054518272', 'percent_full': '64', 'flexgroup_size': '1232471814144', 'flexgroup_used': '956775694336', 'flexgroup_percent_full': '77', 'event_time': '368946'}
Sun Aug 18 12:22:10 +0900 [node1: wafl_exempt00: fg_member_elastic_sizing_1:notice]: params: {'constituent_dsid': '1070', 'object_name': 'Flexgroup', 'current_size': '228140101', 'new_size': '228535792', 'constituent_name': 'Flexgroup__0002(1)', 'operation': 'GREW', 'partner_name': 'Flexgroup__0001', 'partner_dsid': '1069', 'size': '841948483584', 'used': '705721176064', 'percent_full': '83', 'flexgroup_size': '1232471814144', 'flexgroup_used': '956775694336', 'flexgroup_percent_full': '77', 'event_time': '368950'}