zfs discuss - Feb 2009 - importing zpools after a remote replication from different sites

Hi,

In a scenario where multiple sites replicate their zpools (EMC storage, 
hardware based replication) to a single storage in a central site, and 
given that all zpools have the same name, can the host in the central 
site correctly identify and mount the different zpools correctly?

Thanks, Rafael.

-- 
=> Rafael Friedlander
=> Sun Microsystems
=> OEM Specialist
=> +972 544 971 564

On February 11, 2009 6:17:58 PM +0200 Rafael Friedlander <rafa at sun.com>
wrote:
> In a scenario where multiple sites replicate their zpools (EMC storage,
> hardware based replication) to a single storage in a central site, and
> given that all zpools have the same name, can the host in the central
> site correctly identify and mount the different zpools correctly?
yes, hostid that last mounted the zpool is stored in the zpool.  Solaris
will skip zpools that were mounted by someone else.

-frank

You can also import pools by their unique ID instead of by name. If the 
pool is not imported, ''zpool import'' with no arguments should
list the
pool IDs. If the pool is imported, ''zpool get guid
<poolname>'' will list
the pool ID.

Beware that if the zpools have the same mountpoints set within any of 
their datasets, then that may cause problems when importing more than 
one zpool at a time.

Frank Cusack wrote:
> On February 11, 2009 6:17:58 PM +0200 Rafael Friedlander <rafa at
sun.com>
> wrote:
>> In a scenario where multiple sites replicate their zpools (EMC storage,
>> hardware based replication) to a single storage in a central site, and
>> given that all zpools have the same name, can the host in the central
>> site correctly identify and mount the different zpools correctly?
> 
> yes, hostid that last mounted the zpool is stored in the zpool.  Solaris
> will skip zpools that were mounted by someone else.
> 
> -frank
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