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From Nux! <...@li.nux.ro>
Subject RE: [RFC]Bypass Libvirt storage pool for NFS
Date Thu, 20 Mar 2014 16:38:38 GMT
On 19.03.2014 22:48, Edison Su wrote:
>> -----Original Message-----
>> From: Nux! [mailto:nux@li.nux.ro]
>> Sent: Wednesday, March 19, 2014 3:34 PM
>> To: dev@cloudstack.apache.org
>> Subject: RE: [RFC]Bypass Libvirt storage pool for NFS
>> 
>> On 19.03.2014 22:28, Edison Su wrote:
>>>> 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.
>> 
>> Edison, that I understand, but what is the technical reason that 
>> prevents
>> using newer KVM?
>> It looks like current KVM works fine on CentOS 6.5 for example which 
>> has
>> libvirt 0.10.2.
> 
> Yes, at first glance, the newer version libvirt(> 0.9.10) just works
> fine. But under stress test, it will complain NFS storage pool
> missing, and can't add the storage pool back, unless you shut down all
> the VMs which using the storage pool. That's the
> bug(https://bugzilla.redhat.com/show_bug.cgi?id=977706) all about.
> 
> In ACS 4.2/4.3 release, we only recommend to use libvirt <=0.9.10, if
> primary storage is NFS.

Ok, I'm trying to make some noise in that bz entry, hopefully someone 
gets annoyed enough to do something about it.

Quick question: there is no problem if instead of using NFS directly we 
use the "shared mount point" option, is it?

Lucian

-- 
Sent from the Delta quadrant using Borg technology!

Nux!
www.nux.ro

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