The metahs command manages existing hot spares and hot spare pools. It is used to add, delete, enable, and replace components (slices) in hot spare pools. Like the metainit command, the metahs command can also create an initial hot spare pool. The metahs command does not replace a component of a metadevice. This function is performed by the metareplace command.

Hot spares are always in one of three states: available, in-use, or broken. Available hot spares are running and ready to accept data, but are not currently being written to or read from. In-use hot spares are currently being written to and read from. Broken hot spares are out of service and should be repaired. The status of hot spares is displayed when metahs is invoked with the -i option.

Root privileges are required for any of the following options except -i.

-a all component

Adds component to all hot spare pools. all is not case sensitive.

-a hot_spare_pool [component]

Adds the component to the specified hot_spare_pool. hot_spare_pool is created if it does not already exist.

-d all component

Deletes component from all the hot spare pools. The component cannot be deleted if it is in the in-use state.

-d hot_spare_pool [component]

Deletes hot_spare_pool, if the hot_spare_pool is both empty and not referenced by a metadevice. If component is specified, it is deleted from the hot_spare_pool. Hot spares in the in-use state cannot be deleted.

-e component

Enables component to be available for use as a hot spare. The component can be enabled if it is in the broken state and has been repaired.

-i [hot_spare_pool ...]

Displays the status of the specified hot_spare_pool or for all hot spare pools if one is not specified.

-r all component-old component-new

Replace component-old with component-new in all hot spare pools which have the component associated. Components cannot be replaced from any hot spare pool if the old hot spare is in the in-use state.

-r hot_spare_pool component-old component-new

Replaces component-old with component-new in the specified hot_spare_pool. Components cannot be replaced from a hot spare pool if the old hot spare is in the in-use state.

-s setname

Specifies the name of the diskset on which metahs will work. Using the -s option will cause the command to perform its administrative function within the specified diskset. Without this option, the command will perform its function on local hot spare pools.

component

The logical name for the physical slice (partition) on a disk drive, such as /dev/dsk/c0t0d0s2.

hot_spare_pool

Hot spare pools must be of the form hspnnn, where nnn is a number in the range 000-999.

The following exit values are returned:

0

Successful completion.

>0

An error occurred.

See attributes(5) for descriptions of the following attributes:

metaclear(1M), metadb(1M), metadetach(1M), metainit(1M), metaoffline(1M), metaonline(1M), metaparam(1M), metareplace(1M), metaroot(1M), metaset(1M), metastat(1M), metasync(1M), metattach(1M), md.tab(4), md.cf(4), mddb.cf(4), attributes(5)

Solaris Volume Manager Administration Guide