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[Xen-users] Individual block device generating load

  • To: xen-users@xxxxxxxxxxxxx
  • From: Joshua M Boniface <joshua@xxxxxxxxxxx>
  • Date: Fri, 07 Feb 2014 10:15:51 -0500
  • Delivery-date: Fri, 07 Feb 2014 15:16:20 +0000
  • List-id: Xen user discussion <xen-users.lists.xen.org>

Hello Xen-users:

I've got a Xen system with multiple running (production) VMs, using the xm toolstack on Debian Squeeze. I'm noticing a large amount of disk I/O via dstat, and I'm trying to see which Xen DomU block device is generating the load. xentop offers a bit of information on reads/writes, but it's on a per-domain level, not a per-block-device level. The block devices in question are logical volumes.

Is there a way to see a breakdown of the disk I/O per device, or a set of virtual block devices that I could pass to dstat?

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