[Xen-devel] blktap3 upstreaming halted

[Thanos Makatos <thanos.makatos@xxxxxxxxxx>]

We decided not to upstream blktap3 into Xen because there isn't much value in 
it in the long run:
QEMU is quite sufficient for Xen and blktap3 is necessary for XenServer in the 
short run only; we'd like to use QEMU in XenServer, too.

I'll leave the blktap3 version that works for Xen in Bitbucket 
(https://bitbucket.org/tmakatos/blktap3-patches) in case anyone wants to 
experiment. Blktap3 development for XenServer will continue on a blktap2.5 
branch on github.

Regarding concerns about QEMU's VHD performance, we're evaluating the 
possibility of porting blktap2.5's VHD implementation to QEMU (the same applies 
for VHDx).

Thanks

--
Thanos Makatos
Software Engineer (XenServer Storage)
Citrix Systems Ltd.
Cambridge, UK



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