Citrix虚拟机管理程序8.2 LTSR无法添加某些LUN

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适用场景

SAN
iSCSI
MTU 9000 (巨型帧)

问题描述

无法将LUN从NetApp添加到Citrix服务器。配置了MTU 9000 (巨型帧)的NetApp和Citrix服务器网络端口

EMS日志显示持续的iSCSI重新连接：

Sat Feb 04 15:34:53 +0100 [node: iswt_admin_thread: iscsi.notice:notice]: ISCSI: New session from initiator iqn.2022-12.com.host:cii_encrypt/od7H7ZjDzCmPd96m/4sqVFqkmlg9J+7s6m=/cii_encrypt at IP addr cii_encrypt/od7H7ZjDzCN2M7G9ZqpXbCND3YnyregBXpiD4=/cii_encrypt

使用1500 MTU从Linux/Citrix对iSCSI目标执行Ping操作：

# ping -c 5 10.192.xxx.xxx -M do -s 1450 PING 10.192.xxx.xxx (10.192.xxx.xxx) 1450(1478) bytes of data. 1458 bytes from 10.192.xxx.xxx: icmp_seq=1 ttl=64 time=0.216 ms 1458 bytes from 10.192.xxx.xxx: icmp_seq=1 ttl=64 time=0.354 ms 1458 bytes from 10.192.xxx.xxx: icmp_seq=1 ttl=64 time=0.289 ms 1458 bytes from 10.192.xxx.xxx: icmp_seq=1 ttl=64 time=0.356 ms 1458 bytes from 10.192.xxx.xxx: icmp_seq=1 ttl=64 time=0.362 ms

--- 10.192.xxx.xxx ping statistics --- 5 packets transmitted, 5 deceived, 0% packs loss, time 3999ms

从Linux/Citrix对巨型帧(900 MTU)的iSCSI目标执行Ping操作：

# ping -c 5 10.192.xxx.xxx -M do -s 8972 PING 10.192.xxx.xxx (10.192.xxx.xxx) 8972(9000) bytes of data.

--- 10.192.xxx.xxx ping statistics --- 5 packets transmitted, 0 received, 100% packet loss, time 4082ms