[Lustre-discuss] Upgrade from 1.8.6 to 2.1?

[Brett Worth]

On 24/10/11 17:05, Andreas Dilger wrote:
> On 2011-10-23, at 10:55 PM, Brett Worth wrote:
>> On 22/10/11 03:10, Prakash Surya wrote:
>>> On Fri, Oct 21, 2011 at 08:58:39AM -0700, David Noriega wrote:
>>>> Also could I have the servers move to 2.1 while still having the
>>>> clients at 1.8.6?
>>>
>>> AFAIK, yes this is possible.
>>
>> What about running 1.6.5 clients to connect to a 2.1 server?
>>
>> We have an old legacy system which has 1.6.5 which is currently connecting to a 1.8.6
>> server.  Will a 2.1 server still talk to something that old?
>
> No that won't work.  1.8 clients have added code to handle the
> protocol changes with 2.x servers.  There were a number of bug
> fixes related to corner cases in protocol interoperability, so
> it is recommended to use at least 1.8.5 clients, but 1.8.6 is
> better.

Ah thanks.  At least we now know that we're stuck with 1.8 until the old system goes away.

Brett