为避免服务中断,在更改 LUN 呈现/映射时,请始终遵循存储供应商发布的最佳实践。
在升级到 ESXi 6.5 之前,您可以通过检查版本 6.5 之前的主机的设备注册来确定您是否会遇到此问题。检查设备注册时,您应该看到每个存储设备只有一个相关联的 VML 标识符。如果您发现多个 VML 标识符,则升级到 ESXi 6.5 后设备将无法注册。
例如:
# esxcli storage core device list
naa.6001f931059e80000113000200000000
Display Name: Fibre Channel Disk (naa.6001f931059e80000113000200000000)
Has Settable Display Name: true
Size: 10240
Device Type: Direct-Access
Multipath Plugin: NMP
Devfs Path: /vmfs/devices/disks/naa.6001f931059e80000113000200000000
[ … ]
Is VVOL PE: false
Is Offline: false
Is Perennially Reserved: false
Queue Full Sample Size: 0
Queue Full Threshold: 0
Thin Provisioning Status: unknown
Attached Filters:
VAAI Status: supported
Other UIDs:
vml.02000600006001f931059e80000113000200000000495345323430,
vml.02000800006001f931059e80000113000200000000495345323430
注意:为显示更清楚,已减少命令输出。
或者,您也可以检查短格式路径列表以列出指向设备的所有路径,从而检查 LUN 编号的唯一性。
例如:
# esxcfg-mpath -b
naa.6001f931059e80000113000200000000 : Fibre Channel Disk (naa.6001f931059e80000113000200000000)
vmhba2:C0:T0:L6LUN:6state:active fc Adapter: WWNN: 20:00:00:25:b5:ab:00:4f WWPN: 20:00:00:25:b5:ac:00:3f Target: WWNN: 20:00:00:1f:93:10:59:e8 WWPN: 20:00:00:1f:93:10:59:e8
vmhba2:C0:T1:L6LUN:6state:active fc Adapter: WWNN: 20:00:00:25:b5:ab:00:4f WWPN: 20:00:00:25:b5:ac:00:3f Target: WWNN: 20:00:00:1f:93:10:59:e8 WWPN: 20:00:00:1f:93:10:59:ed
vmhba1:C0:T3:L8LUN:8state:active fc Adapter: WWNN: 20:00:00:25:b5:ab:00:4f WWPN: 20:00:00:25:b5:ac:00:2f Target: WWNN: 20:00:00:1f:93:10:59:e8 WWPN: 20:00:00:1f:93:10:59:e9
vmhba1:C0:T5:L8LUN:8state:active fc Adapter: WWNN: 20:00:00:25:b5:ab:00:4f WWPN: 20:00:00:25:b5:ac:00:2f Target: WWNN: 20:00:00:1f:93:10:59:e8 WWPN: 20:00:00:1f:93:10:59:ec