检查多路径是否安装。
 # rpm -qa|grep UltraPath
查看UltraPath软件版本
 # upadmin show version
查看物理路径状态。
 #upadmin show path
查看虚拟磁盘信息。
 #upadmin show vlun
查看逻辑路径状态。
 #upadmin show vlun
查看多路径配置。
 #upadmin show upconfig
 卸载UltraPath
 [root@db1 ~]#  rpm -e UltraPath
 The running service is deleted successfully.
 The boot service is removed successfully.
 The UltraPath files are deleted successfully.
 UltraPath driver package has been successfully removed from your system.
 Restart the system.
[root@db1 ~]# upadmin show version
 Software Version   : 31.02.024
 Driver   Version   : 31.02.024
[root@db1 ~]# upadmin show upconfig
 =======================================================
 UltraPath Configuration
 =======================================================
 Basic Configuration
     Working Mode : load balancing within controller
     LoadBalance Mode : min-queue-depth
     Loadbanlance io threshold : 100
     LUN Trespass : off
Advanced Configuration
     Io Retry Times : 10
     Io Retry Delay : 0
     Faulty path check interval : 10
     Idle path check interval : 60
     Failback Delay Time : 60
     Io Suspension Time : 60
     Max io retry timeout : 1800
     Performance Record : off
     Pending delete period of obsolete paths : 28800
Path reliability configuration
     Timeout degraded statistical time : 600
     Timeout degraded threshold : 1
     Timeout degraded path recovery time : 1800
     Frequent timeout degraded statistical time : 86400
     Frequent timeout degraded threshold : 3
     Frequent timeout degraded path recovery time : 86400
     Intermittent IO error degraded statistical time : 300
     Min. I/Os for intermittent IO error degraded statistical : 5000
     Intermittent IO error degraded threshold : 20
     Intermittent IO error degraded path recovery time : 1800
     Intermittent fault degraded statistical time : 1800
     Intermittent fault degraded threshold : 3
     Intermittent fault degraded path recovery time : 3600
     High latency degraded statistical time : 300
     High latency degraded threshold : 1000
     High latency degraded path recovery time : 3600
     Sensitive delayed degraded threshold : 0
     Sensitive delayed degraded recovery time : 120
HyperMetro configuration
     HyperMetro Primary Array SN : 2102350HYL10H6000020
     HyperMetro WorkingMode : read write within primary array
     HyperMetro Split Size : 128MB
     HyperMetro Load Balance Mode : round-robin
[root@db1 ~]#
  
  
 [root@db1 ~]# upadmin  show path
 -------------------------------------------------------------------------------------------------------------------------------
  Path ID   Initiator Port      Array Name      Controller    Target Port     Path State  Check State  Port Type   Port ID  
     0     10000090fa81c6ef  Huawei.Storage-1F      0A      2080446a2ef573be    Normal        --          FC      CTE0.A.H0
     1     10000090fa81c6ef  Huawei.Storage-1F      0B      2090446a2ef573be    Normal        --          FC      CTE0.B.H0
 -------------------------------------------------------------------------------------------------------------------------------
 -------------------------------------------------------------------------------------------------------------------------------
  Path ID   Initiator Port      Array Name      Controller    Target Port     Path State  Check State  Port Type   Port ID  
     2     10000090fa81c6ef  Huawei.Storage-2F      0B      2091446a2ef573b5    Normal        --          FC      CTE0.B.H1
     3     10000090fa81c6ef  Huawei.Storage-2F      0A      2081446a2ef573b5    Normal        --          FC      CTE0.A.H1
 -------------------------------------------------------------------------------------------------------------------------------
  
 [root@db1 ~]# upadmin check status
 ------------------------------------------------------------
 Checking path status:
 Serverity    Array                    Type                                    Description                                                                                                                     
 Critical     2102350HYL10H6000020     All path down                           All paths of LUN (wwn:6446a2e100f573b55c5a1ff100000010) are down.
                                                               
 Critical     2102350HYL10H6000020     All path down                           All paths of LUN (wwn:6446a2e100f573b55c5a462d00000011) are down.
                                                               
 ------------------------------------------------------------
 Checking environment and config:
 Pass
 ------------------------------------------------------------
 Checking HBA Information:
 iscsi is not installed.
 complete FC checking.
 Pass
 ...................
[root@db1 ~]# rpm -e UltraPath-31.02.024-2.x86_64
 The running service is deleted successfully.
 The boot service is removed successfully.
 The UltraPath files are deleted successfully.
 UltraPath driver package has been successfully removed from your system.
 Restart the system.
  
故障处理--重新安装
 [root@db1 CentOS]# upadmin show version
 Unable to detect UltraPath device node, exit
[root@db1 ~]#  ./install.sh
 complete iscsi checking.
 complete FC checking.
 Verify the UltraPath existence.
 [WARNING] The UltraPath driver has been detected.
 Do you want to uninstall it now?
 <Y|N>:y
 The UltraPath uninstallation starts.
 The running service is deleted successfully.
 The boot service is removed successfully.
 The UltraPath files are deleted successfully.
 UltraPath driver package has been successfully removed from your system.
 Modify system configuration.[file:/etc/iscsi/iscsid.conf,item:node.startup ,value:  automatic]
 Modify system configuration.[file:/etc/iscsi/iscsid.conf,item:node.session.timeo.replacement_timeout ,value:  1]
 Modify system configuration.[file:/etc/modprobe.d/nxupmodules.conf,module:qla2xxx,item:qlport_down_retry,value:5]
 Modify system configuration.[file:/etc/modprobe.d/nxupmodules.conf,module:lpfc,item:lpfc_nodev_tmo,value:5]
 Modify system configuration.[file:/etc/systemd/system.conf,item:DefaultTimeoutStartSec,value:600s]
 If the operating system is installed on a local drive of the server, you are advised
 to choose boot from local; if the operating system is installed on a SAN storage
 system, you must choose boot from san. Please choose the boot type of your system:
 <1>--boot-from-Local
 <2>--boot-from-SAN
 please input your select:1
 Preparing...                          ########################################
 Updating / installing...
 UltraPath-31.02.024-2                 ########################################
 User configuration is saved successfully.
 The boot service is installed successfully.
 The running service is installed successfully.
 ************************************Attention************************************
 * UltraPath would modify some parameters of HBA cards for better performace. If *
 * UltraPath is installed for the first time, you may need to update the initrd  *
 * image before system reboot to make the modification take effect.              *
 *********************************************************************************
 *********************************************************************************
 * UltraPath will use the system hostname for alarm generation and automatic host*
 * registration. Make sure that the system hostname is correctly configured..    *
 *********************************************************************************
 The installation is complete. Whether to restart the system now?
 <Y|N>:y
问题1:alua not support告警
华为官网文档:Centos7.5系统自带多路径报错alua not support
Centos7.5系统自带多路径报错alua not support- 华为
