[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] Re: [Patch 3/3] New blktap implementation
Keir Fraser wrote: > On 31/10/08 03:16, "Dutch Meyer" <dmeyer@xxxxxxxxx> wrote: > >> 3) A kernel patch to add a new unified blktap2 module that will >> eventually replace blktap. > > Is it necessary to keep old blktap kernel driver around for qemu's tap > implementation? Can the two drivers (old and new) coexist next to each > other? They don't conflict all all, they can coesist exactly like blkback and blktap can coexist today. The qemu implementation uses another backend directory (blkback is 'vbd', blktap is 'tap', qemu is 'qdisk'). To be usable qdisk will need some windup in xend, so it either creates the xenstore entries needed or adds the approximate command line options when starting qemu-dm. So one can do a smooth switchover: (a) wait for it being merged, (b) do xend windup and test stuff, (c) fix bug if needed and (d) drop blktap once we are confident there are no regressions. cheers, Gerd _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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