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Re: [Xen-API] Question about CrossPoolMigration-v3
Ruijin Zhou wrote:
> I am studying the blktap2 in Xen hypervisor and plan to add Storage
> Migration in it. I found the following link about
> When will we have these new features? Where can we download the source
> code of it?
It's an early prototype. The toolstack control side is in this branch:
There is also some patches needed to the python storage manager code in
and to blktap2 (which Jon Ludlam is working on)
> Will CrossPoolMigration-v3 use VMware proposed I/O Mirroring
> technique? Or it will do Dirty Block Tracking just like VM live
> migration on Xen?
I'm not familiar with "VMware proposed I/O Mirroring". However the plan is to
use disk mirroring to simplify the migration. When you call the XenAPI
VM.migrate, xapi will:
1. create a synchronous disk mirror of all the disks (using blktap plugins +
some .vhd-reading incremental copying)
2. transfer the VM metadata to the receiver
3. transfer the memory image and domain-level data (as with a normal migration).
I'm hoping to put some more stuff on the wiki over the next few weeks,
including some proposed internal APIs.
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