Supported ZFS with Zone Root Configuration Information (at Least Solaris 10 5/09)

Review the supported zone configurations before using Oracle Solaris Live Upgrade to migrate or upgrade a system with zones.

• Migrate a UFS root file system to a ZFS root file system – The following configurations of zone roots are supported:

  • In a directory in the UFS root file system

  • In a subdirectory of a mount point in the UFS root file system

  • UFS root file system with a zone root in a UFS root file system directory or in a subdirectory of a UFS root file system mount point and a ZFS non-root pool with a zone root

  The following UFS/zone configuration is not supported: UFS root file system that has a zone root as a mount point.

• Migrate or upgrade a ZFS root file system – The following configurations of zone roots are supported:

  • In a dataset in the ZFS root pool. In some cases, if a dataset for the zone root is not provided before the Oracle Solaris Live Upgrade operation, a dataset for the zone root (zoneds) will be created by Oracle Solaris Live Upgrade.

  • In a subdirectory of the ZFS root file system

  • In a dataset outside of the ZFS root file system

  • In a subdirectory of a dataset outside of the ZFS root file system

  • In a dataset in a non root pool. In the following example, zonepool/zones is a dataset that contains the zone roots, and rpool contains the ZFS BE:

    zonepool zonepool/zones zonepool/zones/myzone rpool rpool/ROOT rpool/ROOT/myBE

    Oracle Solaris Live Upgrade snapshots and clones the zones in zonepool and the rpool BE if you use this syntax:

    # lucreate -n newBE

    The newBE BE in rpool/ROOT/newBE is created. When activated, newBE provides access to the zonepool components.

    In the proceeding example, if /zonepool/zones was a subdirectory and not a separate dataset, then Live Upgrade would migrate it as components of the root pool, rpool.

• Zones Migration or upgrade information with zones for both UFS and ZFS – Review the following considerations that might affect a migration or an upgrade of either a UFS and ZFS environment:

  • If you configured your zones as described in Using Oracle Solaris Live Upgrade to Migrate or Upgrade a System With Zones (Solaris 10 10/08) in the Solaris 10 10/08 release and have upgraded to at least the Solaris 10 5/09, you should be able to migrate to a ZFS root file system or use Solaris Live Upgrade to upgrade to at least the Solaris 10 5/09 release.

  • Do not create zone roots in nested directories, for example, zones/zone1 and zones/zone1/zone2. Otherwise, mounting might fail at boot time.