Hi Dong-Jae, From: "Dong-Jae Kang" <baramsori72@xxxxxxxxx>Subject: Re: [Question] I have questions about dm-iobandDate: Fri, 7 Nov 2008 16:29:07 +0900 > Hi Ryo Tsuruta> > Thank you very much for your kind and fast reply> > 2008/11/7 Ryo Tsuruta <ryov@xxxxxxxxxxxxx>:> > Hi Dong-Jae,> >> > From: "Dong-Jae Kang" <baramsori72@xxxxxxxxx>> > Subject: [Question] I have questions about dm-ioband> > Date: Fri, 7 Nov 2008 14:39:56 +0900> >> >> Hi, Ryo tsuruta> >>> >> During past several days, I had been analyzing and testing your> >> dm-ioband I/O controller.> >> because I received some requirements about disk I/O control from other> >> persons as below> >> "guaranteeing the minimum BW of processes in the specific group", of> >> course, in the total BW range.> >> I think it can be adjusted to streaming service, SLA of service> >> hosting part and so on.> >> although the applicable area is some specific and limited part, it can> >> be useful according to the service> >> How do you think about upper requirement?> >> > I think I know why they want minimum bandwidth guarantee and it> > would be useful on a certain situation.> >> >> If it is required, I think that try to support the function in your> >> dm-ioband controller> >> personally, I like your design and implementation style.> >> And, for it , where is the appropriate part in dm-ioband controller to> >> implement the function?> >> Can you give me some advice and comments about supporting it ?> >> > Sure! dm-ioband is designed to be able to add new bandwidth control> > policies. dm-ioband-policy.c is a source code of "weight" and> > "weight-iosize" policies, and would help to understand how to add> > a new policy.> >> > OK, I will start to analyze the dm-ioband-policy.c first.> during the job, if I have a another question or need your help, can I> ask you about it?> Thank you. Of course you can. > >> I don't know well about the details of dm-ioband controllers, concept,> >> design, architecture and so on.> >> it will take some time for me to do that ^^> >> Well, Is there any documentations to help for me to understand the> >> existing implementation ?> >> If so, can I refer it ?> >> > Sorry, there is no document which describes the implementation.> >> Oh.... I should put up with inconvenience. ㅜㅜ> but, I still appreciate your contribution for OSS community> > >> additional one question is left^^> >> dm-ioband can be operated with another dm targets at the same thme?> >> with such like multipath, mirror, linear, snapshot and something like that.> >> for example, IO control over the mirror targets or IO control over the> >> devices with multipath, ....> >> > I have run dm-ioband on a logical volume disk and it worked well.> > http://people.valinux.co.jp/~ryov/dm-ioband/benchmark/lvm.html> >> > I understood> You mean dm-ioband can run over another dm targets. I have just tested with LVM, not with other targets ever. > Thank you again> -- > Best Regards,> Dong-Jae Kang Thanks,Ryo Tsuruta_______________________________________________Containers mailing listContainers@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx://lists.linux-foundation.org/mailman/listinfo/containers
