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From Edison Su <Edison...@citrix.com>
Subject RE: [RFC]Bypass Libvirt storage pool for NFS
Date Wed, 19 Mar 2014 22:28:02 GMT


> -----Original Message-----
> From: Nux! [mailto:nux@li.nux.ro]
> Sent: Wednesday, March 19, 2014 3:07 PM
> To: dev@cloudstack.apache.org
> Subject: RE: [RFC]Bypass Libvirt storage pool for NFS
> 
> On 19.03.2014 20:29, Edison Su wrote:
> > It’s hard to find root cause and fix something in libvirt, even we
> > found the root cause, it's hard to push the fix into libvirt upstream,
> > and not to say push into downstream, like RHEL 6 etc. For example, we
> > already have a fix for the bug
> > https://bugzilla.redhat.com/show_bug.cgi?id=977706 for a few month
> > now, there is no resolution to resolve the issue. Without the fix, we
> > just simply are blocked to support newer version of KVM.
> 
> Edison, if - with the workarounds in place now - the current version of KVM
> works OK, then why wouldn't a newer version work just as fine?
> Just trying to understand this.

That's a long story, there is a bug in Libvirt, which is introduced in a newer version(>0.9.10),
which can make the storage pool disappear.
Wei made a patch to fix it, more than half a year ago: https://www.redhat.com/archives/libvir-list/2013-July/msg00635.html,
unfortunately, the patch seems not getting into upstream yet.
So in order to move forward, to support newer version of KVM, we have to do something in 4.4
release.

> 
> Lucian
> 
> --
> Sent from the Delta quadrant using Borg technology!
> 
> Nux!
> www.nux.ro
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