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)