How to Replace a Slice in a Submirror

Before You Begin

Read Overview of Replacing and Enabling Components in RAID-1 and RAID-5 Volumes and Creating and Maintaining RAID-1 Volumes.

1. Make sure that you have root privilege and that you have a current backup of all data.

2. Use the metastat command to view the status of the RAID-1 volume and associated submirrors.

   # metastat mirror-name

3. Use one of the following methods to replace a slice in a submirror.

   • From the Enhanced Storage tool within the Solaris Management Console, open the Volumes node. Choose the mirror. Then, choose Action⇒Properties and click the Submirror tab. Follow the onscreen instructions. For more information, see the online help.

   • Use the following form of the metareplace command to replace a slice in a submirror:

     # metareplace mirror-name component-name

     • mirror-name is the name of the volume to create.

     • component-name specifies the name of the component to replace.

     mirror-name

     Specifies the name of the volume to create

     component-name

     Specifies the name of the component to replace

     See the following examples and the metainit(1M) man page for more information.

Example 11–19 Replacing a Failed Slice in a Mirror

The following example illustrates how to replace a failed slice when the system is not configured to use hot spare pools for the automatic replacement of failed disks. See Chapter 16, Hot Spare Pools (Overview) for more information about using hot spare pools.

# metastat d6
d6: Mirror
    Submirror 0: d16
      State: Okay        
    Submirror 1: d26
      State: Needs maintenance
...
d26: Submirror of d6
    State: Needs maintenance
    Invoke: metareplace d6 c0t2d0s2 <new device>
...
# metareplace d6 c0t2d0s2 c0t2d2s2
d6: device c0t2d0s2 is replaced with c0t2d2s2

The metastat command confirms that mirror d6 has a submirror, d26, with a slice in the “Needs maintenance” state. The metareplace command replaces the slice as specified in the “Invoke” line of the metastat output with another available slice on the system. The system confirms that the slice is replaced, and starts resynchronizing the submirror.