Thanks Jan-Frode! If you don't mind sharing, over what period of time
did you upgrade from 3.5 to 4.1 and roughly how many clients/servers do
you have in your cluster?
-Aaron
On 12/5/16 5:52 PM, Jan-Frode Myklebust wrote:
I read it as "do your best". I doubt there can be problems that shows up
after 3 weeks, that wouldn't also be triggerable after 1 day.
-jf
man. 5. des. 2016 kl. 22.32 skrev Aaron Knister
<[email protected] <mailto:[email protected]>>:
Hi Everyone,
In the GPFS documentation
(http://www.ibm.com/support/knowledgecenter/SSFKCN_4.1.0/com.ibm.cluster.gpfs.v4r1.gpfs300.doc/bl1ins_migratl.htm)
it has this to say about the duration of an upgrade from 3.5 to 4.1:
> Rolling upgrades allow you to install new GPFS code one node at a time
without shutting down GPFS
> on other nodes. However, you must upgrade all nodes within a short time.
The time dependency exists
>because some GPFS 4.1 features become available on each node as soon as
the node is upgraded, while
>other features will not become available until you upgrade all
participating nodes.
Does anyone have a feel for what "a short time" means? I'm looking to
upgrade from 3.5.0.31 to 4.1.1.10 in a rolling fashion but given the
size of our system it might take several weeks to complete. Seeing this
language concerns me that after some period of time something bad is
going to happen, but I don't know what that period of time is.
Also, if anyone has done a rolling 3.5 to 4.1 upgrade and has any
anecdotes they'd like to share, I would like to hear them.
Thanks!
-Aaron
--
Aaron Knister
NASA Center for Climate Simulation (Code 606.2)
Goddard Space Flight Center
(301) 286-2776
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--
Aaron Knister
NASA Center for Climate Simulation (Code 606.2)
Goddard Space Flight Center
(301) 286-2776
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