On 01/04/2010 15:24, Richard Elling wrote:
On Mar 31, 2010, at 7:57 PM, Charles Hedrick wrote:

So that eliminates one of my concerns. However the other one is still an issue. 
Presumably Solaris Cluster shouldn't import a pool that's still active on the 
other system. We'll be looking more carefully into that.
Older releases of Solaris Cluster used SCSI reservations to help
prevent such things. However, that is now tunable :-(  Did you tune it?

scsi reservation is used only if a node left a cluster.
so for example in a two-node cluster when both nodes are part of a cluster both of them have a full access to shared storage and you can force zpool import on both nodes at the same time.

When you think about it you need actually such behavior for RAC to work on raw devices or real cluster volumes or filesystems, etc.

--
Robert Milkowski
http://milek.blogspot.com

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