由于MetroCluster IP上的NVLog传输、写入延迟较长
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适用场景
- ONTAP 9
- MetroCluster IP (__LW_AT__MCCIP）
问题描述
- MCCIP 系统上的写入延迟较长
- 在CLI中、使用 命令检查
qos statistics volume latency show
示例：
cluster::> qos statistics volume latency show -node test_node1
Workload ID Latency Network Cluster Data Disk QoS NVRAM Cloud
------------ ------ ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- -
volume_1 12578 15426ms 1ms 0ms 0.5us 1ms 0ms 15423ms 0ms
- 在MCCIP后端样本上未找到明显的错误计数器。
- 问题描述由 调解器邮箱磁盘 丢失后重新连接启动。
<LR d="02Jan2023 08:46:39" n="test_node1" t="1672620399" id="1627716454/1018077" p="5" s="Ok" o="kernel" vf="" type="0" seq="1160087">
<iscsi_session_stateChanged_1
iscsi_session_state="Reconnecting"
iscsi_target="iqn.2012-05.local:mailbox.target.3d77a691-cb82-11eb-9d94-00a098f45ac6:c14f72ef-cb82-11eb-9760-00a098f467e6:1"
iscsi_target_type="mailbox"
iscsi_target_address="x.x.x.x"
iscsi_session_state_change_reason="Reason: no ping reply after 5 seconds."
iscsi_timeout_value="5"/>
<LR d="02Jan2023 09:00:28" n="test_node1" t="1672621228" id="1627716454/1018143" p="7" s="Ok" o="fmmbx_diskOpsManager" vf="" type="0" seq="1160154">
<fmmb_disk_io_replyFailed_1
disk_name="0f.3"
uuid="37326132:63393764:00000000:00000000:00000000:00000000:00000000:00000000:00000000:00000000"
status="disk does not exist"
operation="MBX_DISKIO_WRITE_SPECIFIED_BLOCK"
side="Local"
handle="0x0"
flag="0x44"
io_state="0"/>
</LR>
- 重新发现并重置邮箱磁盘后、 也会重置NVMM镜像关系、包括DR配对节点(远程)和HA配对节点(本地)的镜像状态。
<LR d="02Jan2023 09:02:12" n="test_node1" t="1672621332" id="1627716454/1018256" p="7" s="Ok" o="cf_worker" vf="" type="0" seq="1160267">
<nvmm_mirror_aborting_1
partner_sysid="2"
partner_type="DR PARTNER"
mirror_state="NVMM_MIRROR_ONLINE"
error="NVMM_ERR_DRC_TRIGGER"/>
<LR d="02Jan2023 09:02:13" n="test_node1" t="1672621333" id="1627716454/1018266" p="7" s="Ok" o="mcc_cfd_rnic" vf="" type="0" seq="1160277">
<mirror_stream_qp_error_1
mirror="HA Partner"
qp_name="MISC"
error="NVMM_ERR_STREAM"/>