[Beowulf] CentOS/RHEL 7 & major upgrades

Prentice Bisbal prentice.bisbal at rutgers.edu
Mon Feb 23 11:40:15 PST 2015

On 02/20/2015 11:22 PM, Orion Poplawski wrote:
> On 02/13/2015 01:00 AM, Olli-Pekka Lehto wrote:
>> Hi,
>> I’d be interested to hear if people have deployed or upgraded 
>> CentOS/EL 7 on their clusters and what their experiences are? Also in 
>> the more general sense, what kind of distro upgrade philosophy do you 
>> follow? Are there a long-term roadmaps that you build internally, for 
>> example?
>> Recently I’ve had some internal discussions about the prospect 
>> schedule of upgrading our systems from CentOS 6.x to 7. I’m not 
>> really keen on upgrading a major distro version unless there is a 
>> _really_ compelling reason to do so, especially as we have driver 
>> dependencies to Mellanox IB, Lustre, Tesla and Xeon Phi as well as a 
>> lot of ISV codes. However, it would be nice to hear what the current 
>> pain/benefit ratio of such an upgrade is.
> One issue hindering me:
> https://bugzilla.redhat.com/show_bug.cgi?id=1177032
> kickstart install on machine with infiniband interfaces crashes

First, I admit to not understanding the problem in the  bug report 100%. 
Is it possible that you could pass a kernel argument to tell it not to 
try to probe for IB interfaces, or something similar. I know this works 
for video cards, etc., when they cause an install to hang.


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