Hi George,
> Yes; qemu knows how to be a Xen PV block back-end.
Very interesting. Is there documentation about this somewhere ?
I had a look some time ago and it was really not very clear.
Things like what Xen version support this. And with which features (
indirect descriptors, persistent grants, discard, flush, ...) and/or
which limitation.
> One of the reasons for stopping work on blktap3 (AIUI) was that it
> should in theory have performance characteristics similar to blktap3,
And did anyone check the theory currently ? :)
> and tends to get newer protocols like ceph "for free" (i.e.,
> implemented by someone else).
Yes I can definitely see the appeal.
Cheers,
Sylvain
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