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1、发现卷，找到卷的 UUID 和 lable

[root@localhost:~] esxcfg-volume -l
Scanning for VMFS-6 host activity (4096 bytes/HB, 1024 HBs).
VMFS UUID/label: 58af595d-73559071-c3b2-1c1b0d6e7f3a/HDD2
Can mount: Yes
Can resignature: Yes
Extent name: t10.ATA_____TOSHIBA_HDWD130____________________________________18UB53YAS:1    range: 0 - 2861567 (MB)

Scanning for VMFS-6 host activity (4096 bytes/HB, 1024 HBs).
VMFS UUID/label: 58af594f-c477fe00-f7ec-1c1b0d6e7f3a/HDD1
Can mount: Yes
Can resignature: Yes
Extent name: t10.ATA_____ST4000NM01152D1YZ107_________________________________ZC1BDA81:1    range: 0 - 2861567 (MB)

2、挂载卷，注意这李用的是 -m 临时挂载

[root@localhost:~] esxcfg-volume -m 58af595d-73559071-c3b2-1c1b0d6e7f3a
Mounting volume 58af595d-73559071-c3b2-1c1b0d6e7f3a
[root@localhost:~] esxcfg-volume -m 58af594f-c477fe00-f7ec-1c1b0d6e7f3a
Mounting volume 58af594f-c477fe00-f7ec-1c1b0d6e7f3a

3、卸载卷 -u 

[root@localhost:~] esxcfg-volume -u 58af595d-73559071-c3b2-1c1b0d6e7f3a
Umounting volume /vmfs/volumes/58af595d-73559071-c3b2-1c1b0d6e7f3a
[root@localhost:~] esxcfg-volume -u 58af594f-c477fe00-f7ec-1c1b0d6e7f3a
Umounting volume /vmfs/volumes/58af594f-c477fe00-f7ec-1c1b0d6e7f3a

4、永久挂载 -M ，重启后依然有效

[root@localhost:~] esxcfg-volume -M 58af594f-c477fe00-f7ec-1c1b0d6e7f3a
Persistently mounting volume 58af594f-c477fe00-f7ec-1c1b0d6e7f3a
[root@localhost:~] 
[root@localhost:~] esxcfg-volume -M 58af595d-73559071-c3b2-1c1b0d6e7f3a
Persistently mounting volume 58af595d-73559071-c3b2-1c1b0d6e7f3a

5、查看帮助，-l  -m  -u -M 的说明

[root@localhost:~] esxcfg-volume --help
esxcfg-volume <options>
-l|--list                                List all volumes which have been
                                         detected as snapshots/replicas.
-m|--mount <VMFS UUID|label>             Mount a snapshot/replica volume, if 
                                         its original copy is not online.
-u|--umount <VMFS UUID|label>            Umount a snapshot/replica volume.
-r|--resignature <VMFS UUID|label>       Resignature a snapshot/replica volume.
-M|--persistent-mount <VMFS UUID|label>  Mount a snapshot/replica volume
                                         persistently, if its original copy is
                                         not online.
-U|--upgrade <VMFS UUID|label>           Upgrade a VMFS3 volume to VMFS5.
-h|--help                                Show this message.

最后附上参考链接 https://www.cnblogs.com/dwj192/p/17021112.html