Behaviour of DS_MIGRATE

[DaD (Daniel Dehennin)]

Hello.

I trying to figure out the use cases of DS_MIGRATE to implement a storage addon:

• does it cover migration between different TM_MAD or for the same TM_MAD?
• how does that interact with live migration?

Regards.

[atodorov_storpool (Anton Todorov)]

Hello @DaD,

I always consult the logic in the sources. There we have:

@DaD

• does it cover migration between different TM_MAD or for the same TM_MAD?

The migration is allowed only for the same TM_MAD

@DaD

• how does that interact with live migration?

It depends on the datastore attribute DS_LIVE_MIGRATION defined in the TM_MAD driver configuration.

There are other checks(limitations) around the above-mentioned lines in the code, so it is worth looking around a bit .

Hope this helps,

Best Regards,
Anton Todorov