[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] Configure block device IO rate



On Mon, 2014-11-24 at 10:06 -0500, Konrad Rzeszutek Wilk wrote:
> On Mon, Nov 24, 2014 at 12:07:39PM +0000, George Dunlap wrote:
> > On Mon, Nov 24, 2014 at 3:54 AM, aragrawal <aragrawal@xxxxxxxxxxx> wrote:
> > > Hi
> > >
> > > I am interested in getting the block I/O rate fixed for a Virtual Machine.
> > > However, it seems that there are no such options to control the block I/O
> > > rate via the VM configuration file.
> > > Going through the net, I see suggestions to configure the xen_blkback 
> > > driver
> > > using ionice to get that done.
> > >
> > > I would like to know if there are any plans to include any such
> > > configuration option.
> > > Also, are there any particular reason (apart from the fact that there are
> > > other ways to get this done) for the absence of such configuration option?
> > 
> > I'm pretty sure it's just because nobody had asked for it yet.
> > 
> > We can put it on our list of things to think about doing / projects
> > for people new to the community.
> > 
> > We also accept patches. :-)
> 
> Patches for this were in the past posted - it just that nobody explained
> to the maintainer (me) why the dm-* or io-nice would not do the same job.

AIUI the question here is why the toolstack doesn't integrate a guest
cfg file setting to configure dm-* and/or io-nice, rather than why
blkback doesn't duplicate their functionality.

Ian.



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel


 


Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.