We have three lustre file systems of which one is "stand alone" and uses it's own MGS. We mount all three file systems on every client. The only difficulty I came across when mounting all three file systems on a client was that there could be only one MGS per NID. So to make client communicating with both MGSs I created an alias network interface and then in modprobe.conf I configured two NIDs options lnet networks=tcp1(eth1),tcp2(eth1:0)
mount -t lustre 10.142.10....@tcp1:10.142.10....@tcp1:/scratch /scratch mount -t lustre 10.142.10....@tcp1:10.142.10....@tcp1:/data /data mount -t lustre 10.42.10....@tcp2:10.42.10....@tcp2:/work /work Regards, Wojciech 2009/6/26 Andreas Dilger <[email protected]> > On Jun 26, 2009 10:52 -0500, Carlos Santana wrote: > > Can a lustre file system have more than one MGS? Isn't it only one per > > site? I saw some examples where target type mgs was mentioned during > > mkfs.lustre for MDS and OSS nodes. Is it correct and when is it used? > > It makes sense generally to have a single MGS per site for multiple > filesystems, because if clients are mounting more than one filesystem > they can only communicate with a single MGS at a time. > > In some cases there will of course be a need for multiple MGSes in > a single site (e.g. secure and open networks), which is fine as long > as clients don't try to mount from multiple MGSes at once. > > Cheers, Andreas > -- > Andreas Dilger > Sr. Staff Engineer, Lustre Group > Sun Microsystems of Canada, Inc. > > _______________________________________________ > Lustre-discuss mailing list > [email protected] > http://lists.lustre.org/mailman/listinfo/lustre-discuss > -- -- Wojciech Turek Assistant System Manager High Performance Computing Service University of Cambridge Email: [email protected] Tel: (+)44 1223 763517
_______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
