Messages in this thread | | | Date | Tue, 11 Sep 2012 15:13:53 -0700 | Subject | Re: [PATCH] sg_io: allow UNMAP and WRITE SAME without CAP_SYS_RAWIO | From | Tejun Heo <> |
| |
Hello,
On Tue, Sep 11, 2012 at 3:10 PM, Paolo Bonzini <pbonzini@redhat.com> wrote: > Il 12/09/2012 00:02, Tejun Heo ha scritto: >> SG_IO itself is a bypassing interface. It bypasses most of block >> layer and the kernel doesn't have any idea (apart from the adhoc >> filtering) about what's going on. > > That's very much the point. The guest must have free reins. > > You asked "Could being able to bypass the filters for this "you own this > LUN" be a solution?", I said yes and outlined how. Do you agree with > the proposed solution?
Ooh, yeah, I like that one. I was still thinking about the bpf one. It being based on cgroup made me worried even more. :)
> Sure, I'm fine with leaving the current ad hoc filtering aside. Again, > I was hoping to get most of the job done by loosening the filter a bit, > but discussion is inversely proportional to patch length sometimes.
Sorry about dragging it on. The cdb filtering one has always been controversial and I think it'll continue to be. It's an unfortunate thing that we had to add.
Thanks.
-- tejun
| |