Re: [Xen-devel] Remus and blktap2

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Fri, Apr 22, 2016 at 06:07:46PM +0000, Shriram Rajagopalan wrote:
> Blktap2 was the first disk backend implementation. I moved Remus to DRBD
> because it had disk resynchronization support. For eg, when primary fails,
> backup takes over. When primary comes back online, DRBD would automatically
> resynchronize new changes from the backup disk to the primary disk and will
> continue to keep them synchronized.
> At this stage, you have the option of starting Remus replication from
> backup to primary, or, migrating the VM back to the primary host and doing
> the primary to backup replication.
> 
> The DRBD support (last I remember) is quite out of date, because the Remus
> DRBD kernel module I wrote relies on an older kernel version (3.4?) and
> older DRBD code base (8.1 I think).
> 

I should have given more context. We may want to remove blktap2 from
xen.git in the future. Will that break remus?

Wei.

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