On Sun, 2009年06月14日 at 21:13 +0800, howard chen wrote:
> As Xen is not able to limit disk I/O usage easily, so by using iSCSI
> shared storage, do you afraid it will make the system not easy to
> scale?
Some would argue that it's really not the hypervisor's job to ensure
disk QoS. Personally, I'd rather leave that up to device mapper.
If you have not done so, you might want to Google around for dm_ioband,
or check out its project page here:
http://people.valinux.co.jp/~ryov/dm-ioband/
Cheers,
--Tim
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