On Mon, 2007-23-04 at 12:56 +0200, Hans Einar Gautun wrote: > I want to have a local /dev/sdaX on each OST - with same size. That > means: > > ost1 with its own /dev/sda3 > in an active/active failover with > ost2 with its own /dev/sda3 > > Is this possible, or have I misunderstanded something?
The purpose of failover is so that two OSSes can provide the same service to the lustre network. That is, should one of the two nodes fail (i.e. a piano falls on it and completely destroys it), the other OSS can provide exactly the same services. So you have to ask yourself, if you have a local disk in each machine and one machine gets crushed under a piano, how does other machine provide service from the crushed machine's disk? There are two solutions. Use a network replication service like drbd (so that the contents of the local disks is identical at all times) or use an external storage system that both OSSes can access, like FC SCSI or Firewire, etc. b. _______________________________________________ Lustre-discuss mailing list [email protected] https://mail.clusterfs.com/mailman/listinfo/lustre-discuss
