Veritas NetBackup™ Bare Metal Restore™ Administrator's Guide

Zone features cause dynamically mounted file systems to appear, as follows:

• FS entries that involve devices in the global zone.

• Device entries imported from the global zone but mounted either by the /etc/vfstab of the non-global zone, or dynamically by the zone itself.

To automate BMR zone restoration, Add entries to the global zone /etc/vfstab that cause BMR to restore them (unless unmapped by DDR), as follows:

• For FS entries, the global zone devices are used as special and raw values with a mount point that appears under the root of the non-global zone. The entry to add to the global zone's /etc/vfstab should use the global zone's device paths with the full path to the non-global zone mount point, including the zone path. For example, if the zone looks like:

        zonepath=/export/zone1  
        fs:
          dir=/export
          special=/dev/dsk/c0t9d0s6  
          raw=/dev/rdsk/c0t9d0s6  
          type=ufs

  Then the global zone entry in /etc/vfstab should be as follows:

  /dev/dsk/c0t9d0s6 /dev/rdsk/c0t9d0s6 /export/zone1/root/export ufs  
  - no -

• For device entries mounted by the non-global zone, the following issues must be dealt with when you configure for BMR restoration:

  • The dynamic mount that is used involves the imported device path under the zone path. For a device that is mounted by /etc/vfstab inside a non-global zone, there are one or more device entries in the zone, such as the following:

    zonepath=/export/zone2  
      device:  
      match=/dev/*dsk/c0t0d0s4

    The devices that are listed are in the non-global zone's /etc/vfstab as follows:

    /dev/dsk/c0t0d0s4 /dev/rdsk/c0t0d0s4 /local ufs - yes -

    This command causes the global zone to dynamically mount.

    /export/zone2/dev/dsk/c0t0d0s4 on mount point

    /export/zone2/root/local. However, to make BMR automatically recreate the file system, you should add the documenting entry to the global zone /etc/vfstab instead as follows:

    /dev/dsk/c0t0d0s4 /dev/rdsk/c0t0d0s4 /export/zone2/root/local ufs - no -

    (If you use the device paths relative to the zone path, BMR only recreates the mount point instead of restoring the whole file system.)

  • The device match should not use wildcards to allow BMR to edit if DDR is used. When the device specification involves a wildcard, if DDR mapping is done that affects the zone (for example, if you unmap or move a file system from one disk to another), BMR is not able to edit the entry. The affected zone's /etc/vfstab is edited, but the device match entries are edited only if the match does not include a wildcard.

    For example, change the following entry:

    match=/dev/*dsk/c0t0d0s4

    The entry must use two device entries, as follows:

    match=/dev/dsk/c0t0d0s4  
    match=/dev/rdsk/c0t0d0s4

    If the entries are changed as the example shows, BMR DDR correctly updates the zone definitions and vfstab file.