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    Hi,<br>
    <br>
    to enable NFS state transfer between hosts in a failover SAN, it is
    necessary to have the NFS state data on the exact same blocks on
    both storage nodes:<br>
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    <a
href="http://serverfault.com/questions/274990/fault-tolerant-nfs/274995#274995">http://serverfault.com/a/274995</a><br>
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    <a
href="http://sysconfig.org.uk/2011/07/glusterfs-a-workhorse-that-needs-to-be-tamed/">http://sysconfig.org.uk/2011/07/glusterfs-a-workhorse-that-needs-to-be-tamed/</a><br>
    <br>
    "You MUST have a shared (precisely the same block for block)
    filesystem or
    NFS failover won't work, and you'll get stale NFS file handles."<br>
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    <a
href="http://lists.linux-ha.org/pipermail/linux-ha/2004-September/012005.html">http://lists.linux-ha.org/pipermail/linux-ha/2004-September/012005.html</a><br>
    <br>
    Simply linking /usr/lib/nfs to the glusterfs volume doesn't work.<br>
    <br>
    My questions:<br>
    Can I somehow enable block-for-block replication with GlusterFS?<br>
    What is this:
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    <a
href="http://gluster.org/community/documentation/index.php/Gluster_3.2:_Provisioning_Storage_on_Gluster_Virtual_Storage_Appliance">http://gluster.org/community/documentation/index.php/Gluster_3.2:_Provisioning_Storage_on_Gluster_Virtual_Storage_Appliance</a><br>
    <br>
    Thank you.<br>
    <br>
    --<br>
    Best Regards<br>
    Runar Ingebrigtsen<br>
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