[Lustre-discuss] MDS Problems

[Charles Taylor]

On Jun 16, 2008, at 1:01 AM, Andreas Dilger wrote:

>
> Just to mention - you can decode these files using the command:
>
> 	lctl df <logfile> <textfile>

Awesome.

>>
>> Would it be reasonable then, to upgrade the MDSs and OSSs but leave  
>> the
>> clients at 1.6.4.2 or is that asking for trouble.   I think this  
>> comes up a
>> lot and I'm pretty sure people have said they do it successfully.    
>> I'm
>> just wondering if it is a *design* goal that is architected in or  
>> just
>> something that happens to work most of the time.
>
> The Lustre upgrade process is always planned to allow 1.X.Y to work  
> for
> all 'Y' values, and between 1.X.Y_latest and 1.X_next.Z.   We test
> these combinations for Lustre releases, for both interoperability and
> upgrade.  In the vast majority of cases 1.X_next will work with any  
> 1.X
> release, but we can't test all combinations so we don't make such  
> claims.

Crazy awesome!

Charlie Taylor
UF HPC Center