On Tue, Dec 5, 2017 at 8:39 AM, Sage Weil <sweil@xxxxxxxxxx> wrote: > On Tue, 5 Dec 2017, Ken Iizawa wrote: >> I'm sorry, but I failed to save the link to the pull request you told >> me about in today's meeting. >> Could you resend the link? > > https://github.com/ceph/ceph/pull/15482 > > There is a bunch of stuff in there, sorry. What we really want is a rados > op that triggers promote_object(). We don't have that quite yet. > > Myoungwon, is that something you've looked at yet? I'm thinking of a > rados op like TIER_PROMOTE (or something along those lines) that just > triggers a promotion if it is a redirect/chunked manifest, and is a no-op > otherwise. (We could probably make it do something meaningful for a cache > tier too, but I don't think it's worth the effort.) Didn't we previously have something like that? All I see in the source now is a CACHE_EVICT|FLUSH|TRY_FLUSH (or some new? CACHE_PIN|UNPIN), but ops to control promotion/demotion were definitely on the drawing board at one point, and I thought it was implemented. Grepping through logs I do see we had a CEPH_OSD_RMW_FLAG_PROMOTE in 2015, though that's later than I was thinking. Not sure if I'm just missing the right term to search for or if I'm making it up. -Greg -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
