Open Stack

Thx Konstantin for sharing, yes, I haven't tried to set the flavor
root-disk-space to 0. I'm not sure what would happen, but it is
probably worth trying. Is this because if you provision just an image,
and the flavor say root_disk_space = 20G, then the image will have 20G
ephemeral space in / on the compute node?

I will try the live-migration with -DiskFilter and see how that goes. thx! will

On Mon, Aug 15, 2016 at 4:15 PM,  <Kostiantyn.Volenbovskyi at swisscom.com> wrote:
> Hi,
>
> Just to add that this bug was recently brought up in openstack-dev [1]
>
> it sounds that you are waiting for fix via [2] or, probably more likely [3]
> Disabling DiskFilter sounds like OK workaround in case your VMs are never booted from image in your OpenStack Region(s).
> But if I understand the fault - the migrate/resize/live migrate/rebuild/evacuate will not work because
> . assuming that on target Compute Host you don't have local disk - and your flavor has more than 0 GB for root and/or ephemeral disk
> -it would fail.
>
> So I would say that setting your root disk space to '0' in the flavor might be a better workaround
>
> BR,
> Konstantin
> [1] http://lists.openstack.org/pipermail/openstack-dev/2016-August/101566.html
> [2] https://review.openstack.org/#/c/200870/
> [3] https://review.openstack.org/#/c/355091/
>
>
>> -----Original Message-----
>> From: William Josefsson [mailto:william.josefson at gmail.com]
>> Sent: Sunday, August 14, 2016 5:47 PM
>> To: openstack-operators at lists.openstack.org
>> Subject: [Openstack-operators] DiskFilter Disabled - No valid host was found
>>
>> Hello, I got Error, no valid host was found while trying to provision and I could in
>> nova-scheduler.log see that the DiskFilter failed to find a compute host. My OS is
>> CentOS7/ running Liberty.
>>
>> If I'm not mistaken, it is a bug that DiskFilter checks space available on compute-
>> host / partition even when I'm using iSCSI and RBD backends. The / is no way
>> near full.
>> https://bugs.launchpad.net/nova/+bug/1358566
>>
>> Can anyone confirm whether it is fine to disable DiskFilter if I'm using iSCSI and
>> RBD backend or would anything else brake? thx will
>>
>> _______________________________________________
>> OpenStack-operators mailing list
>> OpenStack-operators at lists.openstack.org
>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators