Fix multipathd[688] add missing path error

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Aug 29 17:08:42 myserver multipathd[688]: sda: add missing path
Aug 29 17:08:42 myserver multipathd[688]: sda: failed to get udev uid: Invalid argument
Aug 29 17:08:42 myserver multipathd[688]: sda: failed to get sysfs uid: Invalid argument
Aug 29 17:08:42 myserver multipathd[688]: sda: failed to get sgio uid: No such file or directory
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After some poking around Google, following solution worked without having to modify anything on Ubuntu. I preferred hardware error to be offloaded to hardware (or VMware).

1. Start the vSphere Client, and log in to a vCenter Server.
2. Select Virtual Machines and Templates and click the Virtual Machines tab.
3. Right-click the virtual machine for which you are enabling the disk UUID attribute, and select Power > Power Off.
   The virtual machine powers off.
4. Right-click the virtual machine, and click Edit Settings.
5. Click the Options tab, and select the General entry in the settings column.
6. Click Configuration Parameters. The Configuration Parameters window appears.
7. Click Add Row.
8. In the Name column, enter disk.EnableUUID.
9. In the Value column, enter TRUE.
10. Click OK and click Save.
11. Power on the virtual machine.

That’s it.