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由于精简LUN空间不足、主机端报告IO错误

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适用场景

  • ONTAP 9
  • Linux 主机
  • RHEL

问题描述

  • Linux主机上记录I/O错误:

May 21 17:35:31 xxxxxx Kernel: blk_update_request: I/O error, dev dm-117, sector 128
May 21 17:35:31 xxxxxx Kernel: blk_update_request: I/O error, dev dm-117, sector 0

 

  •  在存储 Ems 日志中 、记录了LUN空间不足错误 、然后使其脱机。

<LR d="21May2023 08:31:10" n="Cluster2-02" t="1684638070" id="1684482535/50317" p="0" s="Ok" o="VdomFSMThr_19" vf="" type="0" seq="8804922">
<LUN_out_of_space_1
     lun_path="/vol/vol1/lun"
     volume_name="vol1"
     volume_dsid="12xx"
     object_uuid="9aa04a39-bdda-4ffc-a092-213b23dxxxyyy"
     object_type="LUN"/>

<LR d="21May2023 08:31:10" n="Cluster2-02" t="1684638070" id="1684482535/50316" p="3" s="Ok" o="scsit_lu_0" vf="" type="0" seq="8804921">
<scsiblade_lun_offline_system_1
     lunSerial="80BVxxKxyxyx"
     volumeMSID="21597xxxyy"
     vserver="SVM1"/>

 

  • LUN及其底层卷均为精简配置。

根据ASUP中的vol-Status-v显示的卷参数 :
guarantee=none   
fractional_reserve=0,
try_first=volume_grow
Volume autosize settings: mode=grow_shrink
maximum-size=100 TB, minimum-size=10 TB
grow-threshold-percent=98%, shrink-threshold-percent=50%

ASUP中的LUN参数(根据LUN .XML):

Space reservatiion Disabled

Space alloctaion is disabled

 

  •  根据  ASUP中的df -A日志、托管受影响卷的底层聚合也已满并达到100%:

DF -A
Aggr      102645668760 102411565948  234102812    100%

 

 

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