[Lustre-discuss] MDT raid parameters, multiple MGSes

Andreas Dilger adilger at whamcloud.com
Thu Jan 27 11:10:33 PST 2011

On 2011-01-27, at 08:26, Jason Rappleye wrote:
> On Jan 27, 2011, at 3:15 AM, Andreas Dilger wrote:
>> The problem is that the client will only connect to a single MGS for configuration updates (in particular, the MGS for the last filesystem that was mounted).  If there is a configuration change (e.g. lctl conf_param, or adding a new OST) on one of the other filesystems, then the client will not be notified of this change because it is no longer connected to the MGS for that filesystem.
>> Granted, it is possible that someone fixed this when I wasn't paying attention.
> I thought this sounded familiar - have a look at bz 20299. Multiple MGCs on a client are ok; multiple MGSes on a single server are not.

Sigh, it was even me who filed the bug...  Seems that bit of information was evicted from my memory.  Thanks for setting me straight.

Cheers, Andreas
Andreas Dilger 
Principal Engineer
Whamcloud, Inc.

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