Ability to cloning/multiplay only one VHD.

Gheppy

I kept looking but I couldn't find a possibility to cloning only one VHD.
The scenario is like this:
I have a VM with two VHDs

VHD1 with 500Gb
VHD2 with 2TB.

and I want to copy only one VHD.
In the present case, I want to multiply this VHD1 without cloning the entire VM, which would mean much more time.

Thank you

olivierlambert

Fast clone of full copy?

Also, what do you want to achieve functionally speaking?

Gheppy

@olivierlambert
full copy
The goal is to have the data from the disk available in another VM. The disk contains many small files and takes more time by other methods

olivierlambert

xe vdi-copy will do the trick.

Gheppy

@olivierlambert

So only via cli, XO doesn't have that for now?
thank you

olivierlambert

If we don't understand the use case, there's little chance it will land into the UI. For example, if it's something you need once in a while, might not worth it to expose it into the UI.

Gheppy

@olivierlambert
In real case, I have a VM with 4 VHDs

VHD 1 with the operating system. 140Gb
VHD 2 with temporary files. 2Tb
VHD 3,4 with database and final files. 4Tb (it is as one disk in VM).

I have an active CR and I am copying this VM to another building and it is also a backup in case of disaster.
At a interval of 30 days, I have to copy the database. And attach it to another VM that represents the test server. That actually means only VHD 3 and 4.

olivierlambert

Hmm why not using our advanced health check capability to validate the DB during a health check?

Gheppy

@olivierlambert
I will read about it.
Thank you

olivierlambert

In essence, you can write any script you like in your VM that would be executed, test whatever you want in the database, and if it's OK, write a special key in the XenStore. XO will detect it and consider the backup health check done and working