Thank you for your reply. I am looking formard to Sage's opinion too @sage. Also I'll keep on with the BlueStore and Kstore's progress. Regards 2015-12-25 14:48 GMT+08:00 Ning Yao <zay11022@xxxxxxxxx>: > Hi, Dong Wu, > > 1. As I currently work for other things, this proposal is abandon for > a long time > 2. This is a complicated task as we need to consider a lots such as > (not just for writeOp, as well as truncate, delete) and also need to > consider the different affects for different backends(Replicated, EC). > 3. I don't think it is good time to redo this patch now, since the > BlueStore and Kstore is inprogress, and I'm afraid to bring some > side-effect. We may prepare and propose the whole design in next CDS. > 4. Currently, we already have some tricks to deal with recovery (like > throttle the max recovery op, set the priority for recovery and so > on). So this kind of patch may not solve the critical problem but just > make things better, and I am not quite sure that this will really > bring a big improvement. Based on my previous test, it works > excellently on slow disk (say hdd), and also for a short-time > maintaining. Otherwise, it will trigger the backfill process. So wait > for Sage's opinion @sage > > If you are interest on this, we may cooperate to do this. > > Regards > Ning Yao > > > 2015-12-25 14:23 GMT+08:00 Dong Wu <archer.wudong@xxxxxxxxx>: >> Thanks, from this pull request I learned that this issue is not >> completed, is there any new progress of this issue? >> >> 2015-12-25 12:30 GMT+08:00 Xinze Chi (信泽) <xmdxcxz@xxxxxxxxx>: >>> Yeah, This is good idea for recovery, but not for backfill. >>> @YaoNing have pull a request about this >>> https://github.com/ceph/ceph/pull/3837 this year. >>> >>> 2015-12-25 11:16 GMT+08:00 Dong Wu <archer.wudong@xxxxxxxxx>: >>>> Hi, >>>> I have doubt about pglog, the pglog contains (op,object,version) etc. >>>> when peering, use pglog to construct missing list,then recover the >>>> whole object in missing list even if different data among replicas is >>>> less then a whole object data(eg,4MB). >>>> why not add (offset,len) to pglog? If so, the missing list can contain >>>> (object, offset, len), then we can reduce recover data. >>>> _______________________________________________ >>>> ceph-users mailing list >>>> ceph-users@xxxxxxxxxxxxxx >>>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >>> >>> >>> >>> -- >>> Regards, >>> Xinze Chi >> _______________________________________________ >> ceph-users mailing list >> ceph-users@xxxxxxxxxxxxxx >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com -- 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
