[Lustre-discuss] MGS failover

[THIELL Stephane]

Hi,

take a look at section 32.4.3:

# mount -t lustre 10.10.0.5 at tcp0:10.10.0.6 at tcp0:/mds-p/client /mnt/lustre

means if 10.10.0.5 at tcp0 is down use 10.10.0.6 at tcp0 for MGS.

Regards,

Stephane Thiell
CEA

Brock Palen a écrit :
> The manual does not make much sense when it comes to MGS failover.
>
> Manual:
>
> Note – The MGS does not use the --failnode option.  You need to set the
> command on all other nodes of the filesystem (servers and clients),  
> about the
> failover options for the MGS. Use the --mgsnode parameter on servers  
> and mount
> address for clients. The servers need to contact the MGS for  
> configuration
> information; they cannot query the MGS about the failover partner.
>
> This does not make any sense at all, other than you can't use -- 
> failnode and that clients can't check with two different hosts for  
> MGS data.  Our MGS will be on its own LUN setup with heartbeat  
> between two nodes that are also working as an MDS pair. While  
> Heartbeat takes care of mounting the MGS file system, how can we tell  
> clients "if mds1 is down use mds2 for MGS data"
>
> Thanks.  I hope that makes sense.
>
>
> Brock Palen
> www.umich.edu/~brockp
> Center for Advanced Computing
> brockp at umich.edu
> (734)936-1985
>
>
>
> _______________________________________________
> Lustre-discuss mailing list
> Lustre-discuss at lists.lustre.org
> http://lists.lustre.org/mailman/listinfo/lustre-discuss