Solaris 10 11/06: Cloning a Non-Global Zone on the Same System

Cloning is used to provision a new zone on a system by copying the data from a source zonepath to a target zonepath.

Starting with Solaris 10 5/09, when the source zonepath and the target zonepath both reside on ZFS and are in the same pool, the zoneadm clone command automatically uses ZFS to clone the zone. However, you can specify that the ZFS zonepath be copied and not ZFS cloned.

How to Clone a Zone

You must configure the new zone before you can install it. The parameter passed to the zoneadm create subcommand is the name of the zone to clone. This source zone must be halted.

You must be the global administrator in the global zone to perform this procedure.

1. Become superuser, or assume the Primary Administrator role.

   To create the role and assign the role to a user, see Using the Solaris Management Tools With RBAC (Task Map) in System Administration Guide: Basic Administration.

2. Halt the source zone to be cloned, which is my-zone in this procedure.

   global# zoneadm -z my-zone halt

3. Start configuring the new zone by exporting the configuration of the source zone my-zone to a file, for example, master.

   global# zonecfg -z my-zone export -f /export/zones/master

   ---

   Note - You can also create the new zone configuration using the procedure How to Configure the Zone instead of modifying an existing configuration. If you use this method, skip ahead to Step 6 after you create the zone.

   ---

4. Edit the file master. Set different properties and resources for the components that cannot be identical for different zones. For example, you must set a new zonepath. For a shared-IP zone, the IP addresses in any net resources must be changed. For an exclusive-IP zone, the physical property of any net resources must be changed.
5. Create the new zone, zone1, by using the commands in the file master.

   global# zonecfg -z zone1 -f /export/zones/master

6. Install the new zone, zone1, by cloning my-zone.

   global# zoneadm -z zone1 clone my-zone

   The system displays:

   Cloning zonepath /export/home/my-zone...

   Starting with Solaris 10 5/09, if the source zonepath is on a ZFS pool, for example, zeepool, the system displays:

   Cloning snapshot zeepool/zones/my-zone@SUNWzone1
   Instead of copying, a ZFS clone has been created for this zone.

7. List the zones on the system.

   ID  NAME     STATUS       PATH                           BRAND      IP
    0  global   running      /                              native     shared
    -  my-zone  installed    /export/home/my-zone           native     shared
    -  zone1    installed    /export/home/zone1             native     shared

Solaris 10 5/09: When a Source zonepath on a ZFS File System Is Cloned

When the zoneadm command clones a source zonepath that is on its own ZFS file system, the following actions are performed:

• The zoneadm command takes a software inventory.

• The zoneadm command takes a ZFS snapshot and names it SUNWzoneX, for example, SUNWzone1.

• The zoneadm command uses ZFS clone to clone the snapshot.

Solaris 10 5/09: How to Clone a Zone from an Existing Snapshot

You can clone a source zone multiple times from an existing snapshot that was originally taken when you cloned a zone.

You must be the global administrator in the global zone to perform this procedure.

1. Become superuser, or assume the Primary Administrator role.

   To create the role and assign the role to a user, see Using the Solaris Management Tools With RBAC (Task Map) in System Administration Guide: Basic Administration.

2. Configure the zone zone2.
3. Specify that an existing snapshot be used to create new-zone2.

   global# zoneadm -z zone2 clone -s zeepool/zones/my-zone@SUNWzone1 my-zone

   The system displays:

   Cloning snapshot zeepool/zones/my-zone@SUNWzone1

   The zoneadm command validates the software from the snapshot SUNWzone1, and clones the snapshot.

4. List the zones on the system.

   ID  NAME     STATUS       PATH                           BRAND      IP
    0  global   running      /                              native     shared
    -  my-zone  installed    /zeepool/zones/my-zone         native     shared
    -  zone1    installed    /zeepool/zones/zone1           native     shared
    -  zone2    installed    /zeepool/zones/zone2           native     shared

Solaris 10 5/09: How to Use Copy Instead of ZFS Clone

Use this procedure to prevent the automatic cloning of a zone on a ZFS file system by specifying that the zonepath should be copied instead.

You must be the global administrator in the global zone to perform this procedure.

1. Become superuser, or assume the Primary Administrator role.

   To create the role and assign the role to a user, see Using the Solaris Management Tools With RBAC (Task Map) in System Administration Guide: Basic Administration.

2. Specify that the zonepath on ZFS be copied and not ZFS cloned.

   global# zoneadm -z zone1 clone -m copy my-zone