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Solaris Volume Manager Administration Guide
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Maintaining Hot Spare Pools

The following sections show how to perform maintenance tasks on hot spare pools.

How to Check the Status of Hot Spares and Hot Spare Pools

  • To view the status of a hot spare pool and its hot spares, use one of the following methods:
    • From the Enhanced Storage tool within the Solaris Management Console, open the Hot Spare Pools node and select a hot spare pool. Choose Action⇒Properties to view detailed status information. For more information, see the online help.

    • Run the following form of the metastat command:

      # metastat hot-spare-pool-name
Example 17-8 Viewing the Status of a Hot Spare Pool

The following example shows sample output from the metastat command on a hot spare pool.

# metastat hsp001
hsp001: 1 hot spare
        c1t3d0s2                Available       16800 blocks

The metahs command can also be used to check the status of a hot spare pool.

For information on the hot spare pool states and the possible actions to take, see Hot Spare Pool States.

How to Replace a Hot Spare in a Hot Spare Pool

  1. Become superuser.
  2. Verify whether the hot spare is currently being used by using one of the following methods:
    • From the Enhanced Storage tool within the Solaris Management Console, open the Hot Spare Pools node and select a hot spare pool. Choose Action⇒Properties. Then choose the Hot Spares panel. Follow the onscreen instructions. For more information, see the online help.

    • Use the following form of the metastat command to view the status of the hot spare pool:

      # metastat hot-spare-pool-name

      For more information, see the metastat(1M) man page.

  3. To replace the hot spare, use one of the following methods:
    • From the Enhanced Storage tool within the Solaris Management Console, open the Hot Spare Pools node and select a hot spare pool. Choose Action⇒Properties. Then choose the Hot Spares panel. Follow the onscreen instructions. For more information, see the online help.

    • Use the following form of the metahs command:

      # metahs -r hot-spare-pool-name current-hot-spare replacement-hot-spare
      -r

      Specifies to replace disks in the named hot spare pool.

      hot-spare-pool-name

      Specifies the name of the hot spare pool. You can also use the special keyword all to change all hot spare pool associations.

      current-hot-spare

      Specifies the name of the current hot spare that will be replaced.

      replacement-hot-spare

      Specifies the name of the slice that will replace the current hot spare in the named hot spare pool.

      For more information, see the metahs(1M) man page.

Example 17-9 Replacing a Hot Spare in One Hot Spare Pool

In the following example, the metastat command shows that the hot spare is not in use. The metahs -r command replaces the hot spare, /dev/dsk/c0t2d0s2, with the hot spare, /dev/dsk/c3t1d0s2, in the hot spare pool, hsp003.

# metastat hsp003
hsp003: 1 hot spare
        c0t2d0s2                Broken       5600 blocks
# metahs -r hsp003 c0t2d0s2 c3t1d0s2
hsp003: Hotspare c0t2d0s2 is replaced with c3t1d0s2
Example 17-10 Replacing a Hot Spare in All Associated Hot Spare Pools

In the following example, the keyword all replaces the hot spare, /dev/dsk/c1t0d0s2, with the hot spare, /dev/dsk/c3t1d0s2, in all its associated hot spare pools.

# metahs -r all c1t0d0s2 c3t1d0s2
hsp001: Hotspare c1t0d0s2 is replaced with c3t1d0s2
hsp002: Hotspare c1t0d0s2 is replaced with c3t1d0s2
hsp003: Hotspare c1t0d0s2 is replaced with c3t1d0s2

How to Delete a Hot Spare From a Hot Spare Pool

  1. Become superuser.
  2. Verify whether the hot spare is currently being used by using one of the following methods:
    • From the Enhanced Storage tool within the Solaris Management Console, open the Hot Spare Pools node and select a hot spare pool. Choose Action⇒Properties. Then choose the Hot Spares panel. Follow the onscreen instructions. For more information, see the online help.

    • Use the following form of the metastat command to view the status of the hot spare pool:

      # metastat hot-spare-pool-name

      See the metastat(1M) man page.

  3. To delete the hot spare, use one of the following methods:
    • From the Enhanced Storage tool within the Solaris Management Console, open the Hot Spare Pools node and select a hot spare pool. Choose Action⇒Properties. Then choose the Hot Spares panel. Follow the onscreen instructions. For more information, see the online help.

    • Use the following form of the metahs command:

      # metahs -d hot-spare-pool-name current-hot-spare
      -d

      Specifies to delete a hot spare from the named hot spare pool.

      hot-spare-pool

      Specifies the name of the hot spare pool. You can also use the special keyword all to delete the hot spare from all hot spare pools.

      current-hot-spare

      Specifies the name of the current hot spare that will be deleted.

      For more information, see the metahs(1M) man page.

Example 17-11 Deleting a Hot Spare from One Hot Spare Pool

In the following example, the metastat command shows that the hot spare is not in use. The metahs -d command deletes the hot spare, /dev/dsk/c0t2d0s2, in the hot spare pool, hsp003.

# metastat hsp003
hsp003: 1 hot spare
        c0t2d0s2                Broken       5600 blocks
# metahs -d hsp003 c0t2d0s2

How to Enable a Hot Spare

  1. Become superuser.
  2. To return a hot spare to the “available” state, use one of the following methods:
    • From the Enhanced Storage tool within the Solaris Management Console, open the Hot Spare Pools node and select a hot spare pool. Choose Action⇒Properties. Then, choose the Hot Spares panel. Follow the onscreen instructions. For more information, see the online help.

    • Use the following form of the metahs command:

      # metahs -e hot-spare-slice
      -e

      Specifies to enable a hot spare.

      hot-spare-slice

      Specifies the name of the slice to enable.

      For more information, see the metahs(1M) man page.

Example 17-12 Enabling a Hot Spare

In the following example, the metahs command places the hot spare, /dev/dsk/c0t0d0s2 in the “Available” state after it has been repaired. It is unnecessary to specify a hot spare pool.

# metahs -e c0t0d0s2
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