Re: MySQL Native Clustering and Red Hat Cluster Suite
AFAIK innodb does not support external locking.
If it did it would be horribly slow too.
all metadata for shared storage systems either has to go over a network (ethernet) or to the disk. Both are slow and all nodes have to respond to actually get the lock. i.e. you would see nowhere near the performance of a single machine.
Stewart Smith, Software Engineer - MySQL Cluster
MySQL AB, www.mysql.com
Jumpstart your cluster:
http://www.mysql.com/consulting/packaged/cluster.html
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