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From "ASF subversion and git services (JIRA)" <>
Subject [jira] [Commented] (CLOUDSTACK-9929) Disk statistics fail to collect on Ubuntu 16.04
Date Fri, 14 Jul 2017 09:32:00 GMT


ASF subversion and git services commented on CLOUDSTACK-9929:

Commit ca415e7436e9715a744a7c1383baac0c8b64c41f in cloudstack's branch refs/heads/master from
[;h=ca415e7 ]

CLOUDSTACK-9929: Do not gather statistics for CDROM or FLOPPY devices

Libvirt / Qemu (KVM) does not collect statistics about these either.

On some systems it might even yield a 'internal error' from libvirt
when attempting to gather block statistics from such devices.

For example Ubuntu 16.04 (Xenial) has a issue with this.

Skip them when looping through all devices.

Signed-off-by: Wido den Hollander <>

> Disk statistics fail to collect on Ubuntu 16.04
> -----------------------------------------------
>                 Key: CLOUDSTACK-9929
>                 URL:
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>          Components: KVM, libvirt
>    Affects Versions:,
>         Environment: Ubuntu 16.04 + KVM Agent
>            Reporter: Wido den Hollander
>            Assignee: Wido den Hollander
>              Labels: ide, kvm, libvirt
>             Fix For:,
> Disk statistics fail to collect on Ubuntu 16.04 hypervisors running KVM:
> "libvirtd[7519]: internal error: cannot find statistics for device 'ide0-1-0'"
> This is because libvirt doesn't collect statistics for the Virtual CD-Rom device and
we shouldn't query those.

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