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After reinstalling the virtual machine operating system, the virtual machine’s user disk has lost.

Publication Date:  2012-11-19 Views:  69 Downloads:  0
Issue Description
Version: R2C00SPC200
Symptom of the fault: In the webhosting scene, the customer reinstalled the operating system of the windows virtual machine, however, the user disk couldn’t be seen in the computer manager.

Alarm Information
Handling Process
1. Restart the virtual machine, but it doesn’t take effect.
2. Login in the virtual machine via VNC, enter in “add or delete programs” and check the virtual machine’s software, we don’t find the PVDriver, then we conclude that the customer hasn’t install the PVDriver after reinstalling the operating system, and causes to can’ t find the user’s disk.
3. Login in the virtual machine via VNC, and install the corresponding pvdriver. Notice: if you don’t use VNC to install the pvdriver, there will prompt “Not to use RDP to install windows PV Driver please, To Use VNC please!”

4. On the BMSportal, take the “start” and “close” operations for this virtual machine.
5. After starting the virtual machine, on the BMSportal, take the operations of un-bonding and bonding for the user’s disk once again.
6. After bonding successfully, login in the virtual machine via VNC, right click the “My computer” icon, select “management” -> “storage” -> “disk management”, there will appear a disk without any tab, as the following displayed:

7. Right click the disk without any tab, select “change the drive ID and route” in the ejecting list menu, then modify it as to your wanted disk tab, we make it as F disk in this case. Notice: don’t choose the “format and partition” or “delete the disk partition” item, or it will cause the data of the user’s disk lost.

8. After completing these operations, we can see the user’s disk after reinstalling the operating system normally.
Root Cause
The customer just had installed the virtual machine’s operating system and didn’t install the corresponding pvdriver, and then caused there couldn’t see the user’s disk in the virtual machine.