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<refsect1><title>DRIVE CONFIGURATION</title>
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At start-up and when a drive is connected,
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<link linkend="udisksd.8"><citerefentry><refentrytitle>udisksd</refentrytitle><manvolnum>8</manvolnum></citerefentry></link>
65
will apply configuration stored in the file
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<filename class='directory'>/etc/udisks2/IDENTIFIER.conf</filename>
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where <emphasis>IDENTIFIER</emphasis> is the value of the
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<link linkend="gdbus-property-org-freedesktop-UDisks2-Drive.Id">Drive:Id</link>
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property for the drive. If the file changes on disk its new
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contents will also be applied to the drive.
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Typically, users or administrators will never need to edit drive
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configuration files as they are effectively managed through
73
graphical applications such as
74
<citerefentry><refentrytitle>gnome-disks</refentrytitle><manvolnum>1</manvolnum></citerefentry>.
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Manually editing configuration files is however supported — the file
76
format is a simple <emphasis>.ini-like format</emphasis>
78
<ulink url="http://freedesktop.org/wiki/Specifications/desktop-entry-spec">Desktop Entry Specification</ulink>
79
for the exact syntax). New groups and keys may
80
be added in the future.
84
<title>ATA group</title>
86
The <literal>ATA</literal> group is for settings that apply to
87
drives using the ATA command-set. The following keys are
93
<term><option>StandbyTimeout</option></term>
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The standby timeout. A value of zero means "timeouts
97
are disabled": the device will not automatically enter
98
standby mode. Values from 1 to 240 specify multiples of
99
5 seconds, yielding timeouts from 5 seconds to 20
100
minutes. Values from 241 to 251 specify from 1 to 11
101
units of 30 minutes, yielding timeouts from 30 minutes
102
to 5.5 hours. A value of 252 signifies a timeout of 21
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minutes. A value of 253 sets a vendor-defined timeout
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period between 8 and 12 hours, and the value 254 is
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reserved. 255 is interpreted as 21 minutes plus 15
106
seconds. Note that some older drives may have very
107
different interpretations of these values.
108
This is similar to the <option>-S</option> option in
109
<citerefentry><refentrytitle>hdparm</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
114
<term><option>APMLevel</option></term>
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The Advanced Power Management level. A low value means
118
aggressive power management and a high value means
119
better performance. Possible settings range from values
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1 through 127 (which permit spin-down), and values 128
121
through 254 (which do not permit spin-down). The
122
highest degree of power management is attained with a
123
setting of 1, and the highest I/O performance with a
124
setting of 254. A value of 255 tells hdparm to disable
125
Advanced Power Management altogether on the drive (not
126
all drives support disabling it, but most do).
127
This is similar to the <option>-B</option> option in
128
<citerefentry><refentrytitle>hdparm</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
133
<term><option>AAMLevel</option></term>
136
The Automatic Acoustic Management level. Most modern
137
harddisk drives have the ability to speed down the head
138
movements to reduce their noise output. The possible
139
values are between 0 and 254. 128 is the most quiet (and
140
therefore slowest) setting and 254 the fastest (and
141
loudest). Some drives have only two levels (quiet /
142
fast), while others may have different levels between
143
128 and 254. At the moment, most drives only support 3
144
options, off, quiet, and fast. These have been assigned
145
the values 0, 128, and 254 at present, respectively, but
146
integer space has been incorporated for future
147
expansion, should this change.
148
This is similar to the <option>-M</option> option in
149
<citerefentry><refentrytitle>hdparm</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
62
158
<title>DEVICE INFORMATION</title>
added
removed
doc/man/udisks.xml
