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6 .TH SCMADM 1M "Aug 3, 2006"
7 .SH NAME
8 scmadm \- storage cache manager administration utility
9 .SH SYNOPSIS
10 .LP
11 .nf
12 \fBscmadm\fR
13 .fi
14
15 .LP
16 .nf
17 \fBscmadm\fR \fB-h\fR
18 .fi
19
20 .LP
21 .nf
22 \fBscmadm\fR \fB-e\fR
23 .fi
24
25 .LP
26 .nf
27 \fBscmadm\fR \fB-d\fR
28 .fi
29
30 .LP
31 .nf
32 \fBscmadm\fR \fB-v\fR
33 .fi
34
35 .LP
36 .nf
37 \fBscmadm\fR \fB-C\fR [\fIparameter\fR [= [\fIvalue\fR]]...]
38 .fi
39
40 .LP
41 .nf
42 \fBscmadm\fR \fB-o\fR {system | \fIcd\fR | \fIdevice\fR} [\fIoption\fR]
43 .fi
44
45 .LP
46 .nf
47 \fBscmadm\fR \fB-m\fR {\fIcd\fR | \fIdiskname\fR | all}
48 .fi
49
50 .SH DESCRIPTION
51 .sp
52 .LP
53 The \fBscmadm\fR command provides various options for controlling and gathering
54 information about a storage device cache.
55 .SH OPTIONS
56 .sp
57 .LP
58 If no options are specified, \fBscmadm\fR displays a list of configured cache
59 descriptors with disknames, options, and global options. The \fBscmadm\fR
60 command supports the following options:
61 .sp
62 .ne 2
63 .na
64 \fB\fB-h\fR\fR
65 .ad
66 .sp .6
67 .RS 4n
68 Displays usage information for the \fBscmadm\fR command.
69 .RE
70
71 .sp
72 .ne 2
73 .na
74 \fB\fB-e\fR\fR
75 .ad
76 .sp .6
77 .RS 4n
78 Reads the configuration and enables the storage device cache with those
79 parameters. See \fBdscfg\fR(1M).
80 .RE
81
82 .sp
83 .ne 2
84 .na
85 \fB\fB-d\fR\fR
86 .ad
87 .sp .6
88 .RS 4n
89 Shuts down the storage device cache.
90 .RE
91
92 .sp
93 .ne 2
94 .na
95 \fB\fB-v\fR\fR
96 .ad
97 .sp .6
98 .RS 4n
99 Displays the cache version number.
100 .RE
101
102 .sp
103 .ne 2
104 .na
105 \fB\fB-C\fR [\fIparameter\fR[=[\fIvalue\fR]] ...]\fR
106 .ad
107 .sp .6
108 .RS 4n
109 Sets or displays the configuration parameters. If the \fB-C\fR option is
110 specified with no arguments the current cache configuration parameters are
111 displayed. If \fIparameter\fR is specified, the current value of
112 \fIparameter\fR is displayed. If \fIparameter=value\fR is specified, the
113 current value of \fIparameter\fR is displayed and the parameter is changed to
114 \fIvalue\fR. If \fIvalue\fR is omitted, or if \fIvalue\fR is specified as the
115 null string, " ", or as "-", the parameter is deleted from the configuration
116 and the system uses the default value. Multiple parameters can be specified in
117 a single invocation of the \fBscmadm\fR command. A change in a configuration
118 parameter takes effect only when the cache is next restarted.
119 .RE
120
121 .sp
122 .ne 2
123 .na
124 \fB\fB-o\fR { \fBsystem\fR | \fBcd\fR | \fIdiskname\fR } [\fIoption\fR]\fR
125 .ad
126 .sp .6
127 .RS 4n
128 Sets or displays the options for the system or for the cache device specified
129 by \fBcd\fR or \fIdiskname\fR. If the \fIoption\fR \fBrdcache\fR or
130 \fBnordcache\fR is specified, the system or specified cache device is set to
131 that option. The option is saved as part of the configuration so that the
132 option persists. See \fBdscfg\fR(1M). To notify the system to "forget" about a
133 saved option, use the \fBforget\fR option. This does not change the option; it
134 just removes the option from the saved configuration. If no option is
135 specified, current options are displayed. The \fBrdcache\fR option is set as
136 the default. The \fIoption\fRs are defined as follows:
137 .sp
138 .ne 2
139 .na
140 \fB\fBrdcache\fR\fR
141 .ad
142 .sp .6
143 .RS 4n
144 Data blocks are likely to be referenced again and should remain in cache.
145 .RE
146
147 .sp
148 .ne 2
149 .na
150 \fB\fBnordcache\fR\fR
151 .ad
152 .sp .6
153 .RS 4n
154 Data blocks are unlikely to be referenced again and should be treated as least
155 recently used, so that other blocks can remain in the cache longer.
156 .RE
157
158 .RE
159
160 .sp
161 .ne 2
162 .na
163 \fB\fB-m\fR { \fBcd\fR | \fIdiskname\fR | \fBall\fR }\fR
164 .ad
165 .sp .6
166 .RS 4n
167 Displays the cache descriptor and diskname map for the device specified by
168 \fBcd\fR or \fIdiskname\fR or, if you specify \fBall\fR, displays the cache
169 descriptors and diskname map for all storage devices on the system.
170 .RE
171
172 .SH EXIT STATUS
173 .sp
174 .LP
175 The \fBscmadm\fR command returns 0 for success, non-zero for error.
176 .SH FILES
177 .sp
178 .LP
179 \fB/dev/sdbc\fR
180 .SH ATTRIBUTES
181 .sp
182 .LP
183 See \fBattributes\fR(5) for descriptions of the following attributes:
184 .sp
185
186 .sp
187 .TS
188 box;
189 c | c
190 l | l .
191 ATTRIBUTE TYPE ATTRIBUTE VALUE
192 _
193 Interface Stability Evolving
194 .TE
195
196 .SH SEE ALSO
197 .sp
198 .LP
199 \fBdscfg\fR(1M), \fBattributes\fR(5)
200 .SH DIAGNOSTICS
201 .sp
202 .LP
203 \fBscmadm\fR fails if there is insufficient contiguous memory.