May 26, 2018

ZFS based replication and failover solution

Zrep is an enterprise-grade, single-program solution for handling asynchronous, continuous replication of a zfs filesystem, to another filesystem. That filesystem can be on another machine, or on the same machine.

It also handles ‘failover’, as simply as “zrep failover datapool/yourfs”. This will conveniently handle all the details of

  • Making ‘yourfs’ be a data destination, rather than a source
  • Making ‘yourfs’ be read-only
  • Making the destination fs be “live”, and ready to transfer data to yourfs

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