sdem: alua not supported

admin

两台主机做rac,配置multipath后，一节点设备正常，二节点看不聚合设备
报错如下：

1. [root@localhost host0]# rpm -qa | grep mapper
   
2. device-mapper-multipath-libs-0.4.9-123.el7.x86_64
   
3. device-mapper-event-libs-1.02.149-8.el7.x86_64
   
4. device-mapper-persistent-data-0.7.3-3.el7.x86_64
   
5. device-mapper-libs-1.02.149-8.el7.x86_64
   
6. device-mapper-event-1.02.149-8.el7.x86_64
   
7. device-mapper-multipath-0.4.9-123.el7.x86_64
   
8. device-mapper-1.02.149-8.el7.x86_64
   
9. [root@localhost host0]# yum install -y device-mapper device-mapper-multipath
   
10. 已加载插件：langpacks, product-id, search-disabled-repos, subscription-manager
    
11. This system is not registered with an entitlement server. You can use subscription-manager to register.
    
12. There are no enabled repos.
    
13. Run "yum repolist all" to see the repos you have.
    
14. To enable Red Hat Subscription Management repositories:
    
15.      subscription-manager repos --enable <repo>
    
16. To enable custom repositories:
    
17.      yum-config-manager --enable <repo>
    
18. [root@localhost host0]# mpathconf --enable
    
19. [root@localhost host0]# service multipathd start
    
20. Redirecting to /bin/systemctl start multipathd.service
    
21. [root@localhost host0]# service multipathd status
    
22. Redirecting to /bin/systemctl status multipathd.service
    
23. ● multipathd.service - Device-Mapper Multipath Device Controller
    
24.    Loaded: loaded (/usr/lib/systemd/system/multipathd.service; enabled; vendor preset: enabled)
    
25.    Active: active (running) since 四 2020-07-09 21:08:14 CST; 10min ago
    
26.   Process: 77304 ExecStart=/sbin/multipathd (code=exited, status=0/SUCCESS)
    
27.   Process: 77143 ExecStartPre=/sbin/multipath -A (code=exited, status=0/SUCCESS)
    
28.   Process: 76969 ExecStartPre=/sbin/modprobe dm-multipath (code=exited, status=0/SUCCESS)
    
29. Main PID: 77359 (multipathd)
    
30.    CGroup: /system.slice/multipathd.service
    
31.            └─77359 /sbin/multipathd
    
32. 
    
33. 7月 09 21:08:19 localhost.localdomain multipathd[77359]: sdem: alua not supported
    
34. 7月 09 21:08:19 localhost.localdomain multipathd[77359]: rport-0:0-1: failed to read dev_loss_tmo value, error 2
    
35. 7月 09 21:08:19 localhost.localdomain multipathd[77359]: rport-0:0-3: failed to read dev_loss_tmo value, error 2
    
36. 7月 09 21:08:19 localhost.localdomain multipathd[77359]: rport-16:0-1: failed to read dev_loss_tmo value, error 2
    
37. 7月 09 21:08:19 localhost.localdomain multipathd[77359]: rport-16:0-2: failed to read dev_loss_tmo value, error 2
    
38. 7月 09 21:08:19 localhost.localdomain multipathd[77359]: rport-17:0-0: failed to read dev_loss_tmo value, error 2
    
39. 7月 09 21:08:19 localhost.localdomain multipathd[77359]: rport-17:0-3: failed to read dev_loss_tmo value, error 2
    
40. 7月 09 21:08:19 localhost.localdomain multipathd[77359]: rport-18:0-2: failed to read dev_loss_tmo value, error 2
    
41. 7月 09 21:08:19 localhost.localdomain multipathd[77359]: rport-18:0-3: failed to read dev_loss_tmo value, error 2
    
42. 7月 09 21:08:19 localhost.localdomain multipathd[77359]: path checkers start up
    
43. [root@localhost host0]# multipath -ll

复制代码

经查，华为得存储设备在管理端有个选项

配置完成后，通过重启主机，发现可以正常进行iscsi聚合了。