On Mon, 10/14 02:18, Wangshen (Peter) wrote: > > > on Sunday, October 13, 2013 9:27 PM, Paolo Bonzini wrote: > > Il 12/10/2013 08:09, Soumendu Satapathy (sosatapa) ha scritto: > > > Do we have an equivalent of vmware SIOC like feature in KVM? > > > > Yes, you have two choices: > > > > 1) use cgroups to throttle I/O at the level of the host disk (i.e. > > multiple virtual disks stored on the same disk share the limit). If you're > > using libvirt, add the <blkiotune> element to the definition of the virtual > > machine. > > > > 2) enable I/O throttling in QEMU, to apply limits at the level of the guest > > disk. If you're using libvirt, add the "iotune" element within the <disk> > > element in the definition of the virtual machine. > > > > Both are documented at http://libvirt.org/formatdomain.html (search for > > blkiotune and iotune). > > Both "blkiotune" and "iotune" are only take effect on one same host. > How to throttle I/O across multiple host with shared storage devices? > Depending on how you use the shared storage, I think you could: 1) Throttle disk/network IO on the shared device with cgroups. 2) Set throttle limit (iotune) on each domain. Thanks, Fam -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
