nscadm(1m) [opensolaris man page]

nscadm(1M)						  System Administration Commands						nscadm(1M)

NAME

       nscadm - network storage control utility

SYNOPSIS

       nscadm freeze device

       nscadm unfreeze device

       nscadm isfrozen device

DESCRIPTION

       The nscadm command performs several network storage control functions.

       The  nscadm  freeze command closes existing references to the specified device, and blocks future accesses. This allows maintenance of vir-
       tual volume device drivers (for example, RAID 0, RAID 1, RAID 5) to be performed without shutting down the system.

       The nscadm unfreeze command reverses the effects of nscadm freeze for the specified device.

       The nscadm isfrozen command returns the current status of the specified device.

OPTIONS

       The nscadm command supports the following option.

       -h	    Display the usage menu.

OPERANDS

       The nscadm command line supports the following operand.

       device

	   Specifies the storage device to be acted upon by nscadm.

EXIT STATUS

       For the freeze and unfreeze, subcommands nscadm returns the following exit values:

       0	    Success

       255	    Error

       For the isfrozen subcommand, nscadm returns the following exit values:

       0	    Device is currently frozen.

       1	    Device is not currently frozen.

       255	    Error

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWscmr, SUNWscmu	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       scmadm(1M), attributes(5)

SunOS 5.11							    2 Oct 2007								nscadm(1M)

scmadm(1M)						  System Administration Commands						scmadm(1M)

NAME

       scmadm - storage cache manager administration utility

SYNOPSIS

       scmadm

       scmadm -h

       scmadm -e

       scmadm -d

       scmadm -v

       scmadm -C [parameter [= [value]]...]

       scmadm -o {system | cd | device} [option]

       scmadm -m {cd |	diskname |  all}

DESCRIPTION

       The scmadm command provides various options for controlling and gathering information about a storage device cache.

OPTIONS

       If no options are specified, scmadm displays a list of configured cache descriptors with disknames, options, and global options. The scmadm
       command supports the following options:

       -h

	   Displays usage information for the scmadm command.

       -e

	   Reads the configuration and enables the storage device cache with those parameters. See dscfg(1M).

       -d

	   Shuts down the storage device cache.

       -v

	   Displays the cache version number.

       -C [parameter[=[value]] ...]

	   Sets or displays the configuration parameters. If the -C option is specified with no arguments the current cache configuration  parame-
	   ters  are  displayed. If parameter is specified, the current value of parameter is displayed. If parameter=value is specified, the cur-
	   rent value of parameter is displayed and the parameter is changed to value.	If value is omitted, or if value is specified as the  null
	   string,  " ", or as "-", the parameter is deleted from the configuration and the system uses the default value. Multiple parameters can
	   be specified in a single invocation of the scmadm command. A change in a configuration parameter takes effect only when  the  cache	is
	   next restarted.

       -o { system | cd | diskname } [option]

	   Sets  or displays the options for the system or for the cache device specified by cd or diskname. If the option rdcache or nordcache is
	   specified, the system or specified cache device is set to that option. The option is saved as part of the  configuration  so  that  the
	   option  persists. See dscfg(1M). To notify the system to "forget" about a saved option, use the forget option. This does not change the
	   option; it just removes the option from the saved configuration. If no option is specified, current options are displayed. The  rdcache
	   option is set as the default. The options are defined as follows:

	   rdcache

	       Data blocks are likely to be referenced again and should remain in cache.

	   nordcache

	       Data  blocks  are  unlikely to be referenced again and should be treated as least recently used, so that other blocks can remain in
	       the cache longer.

       -m { cd | diskname | all }

	   Displays the cache descriptor and diskname map for the device specified by cd or diskname or, if you specify all,  displays	the  cache
	   descriptors and diskname map for all storage devices on the system.

EXIT STATUS

       The scmadm command returns 0 for success, non-zero for error.

FILES

       /dev/sdbc

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWscmr, SUNWscmu	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       dscfg(1M), attributes(5)

DIAGNOSTICS

       scmadm fails if there is insufficient contiguous memory.

SunOS 5.11							   3 August 2006							scmadm(1M)